[FFmpeg-trac] #9346(undetermined:new): failed with error info "partial file" when input a mp4 file via unix socket

FFmpeg trac at avcodec.org
Sat Jul 24 18:27:45 EEST 2021


#9346: failed with error info "partial file" when input a mp4 file via unix socket
-------------------------------------+-------------------------------------
             Reporter:  ku7iex2E     |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  unix-socket  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by ku7iex2E:

Old description:

> failed when via unix socket, but nothing wrong when you input it just as
> a normal file.
> log of unix socket one:
> {{{
> % cat 1.mp4 | socat - unix-listen:/tmp/abcd &
> % ffmpeg -report  -i unix:///tmp/abcd -c copy out.mkv
> }}}
> {{{
> ffmpeg started on 2021-07-24 at 23:10:04
> Report written to "ffmpeg-20210724-231004.log"
> Log level: 48
> Command line:
> ffmpeg -report -i unix:///tmp/abcd -c copy out.mkv
> ffmpeg version n4.4 Copyright (c) 2000-2021 the FFmpeg developers
>   built with gcc 11.1.0 (GCC)
>   configuration: --prefix=/usr --disable-debug --disable-static
> --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm
> --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-
> gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray
> --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-
> libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack
> --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-
> libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg
> --enable-libopus --enable-libpulse --enable-librav1e --enable-librsvg
> --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh
> --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-
> libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-
> libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-
> libxml2 --enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc
> --enable-shared --enable-version3
>   libavutil      56. 70.100 / 56. 70.100
>   libavcodec     58.134.100 / 58.134.100
>   libavformat    58. 76.100 / 58. 76.100
>   libavdevice    58. 13.100 / 58. 13.100
>   libavfilter     7.110.100 /  7.110.100
>   libswscale      5.  9.100 /  5.  9.100
>   libswresample   3.  9.100 /  3.  9.100
>   libpostproc    55.  9.100 / 55.  9.100
> Splitting the commandline.
> Reading option '-report' ... matched as option 'report' (generate a
> report) with argument '1'.
> Reading option '-i' ... matched as input url with argument
> 'unix:///tmp/abcd'.
> Reading option '-c' ... matched as option 'c' (codec name) with argument
> 'copy'.
> Reading option 'out.mkv' ... matched as output url.
> Finished splitting the commandline.
> Parsing a group of options: global .
> Applying option report (generate a report) with argument 1.
> Successfully parsed a group of options.
> Parsing a group of options: input url unix:///tmp/abcd.
> Successfully parsed a group of options.
> Opening an input file: unix:///tmp/abcd.
> [NULL @ 0x55b6bf062440] Opening 'unix:///tmp/abcd' for reading
> [unix @ 0x55b6bf0630c0] No default whitelist set
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Format mov,mp4,m4a,3gp,3g2,mj2
> probed with size=2048 and score=100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] ISO: File Type Major Brand:
> dash
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Unknown dref type 0x206c7275
> size 12
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180002970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180004500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180006030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180007470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180009000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180010530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180011970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180013500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180015030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180016470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180018000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180019530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180020970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180022500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180024030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180025470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180027000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180028530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180029970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180031500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180033030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180034470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180036000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180037530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180038970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180040500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180042030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180043470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180045000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180046530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180047970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180049500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180051030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180052470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180054000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180055530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180056970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180058500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180060030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180061470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180063000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180064530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180065970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180067500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180069030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180070470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180072000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180073530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180074970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180076500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180078030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180079470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180081000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180082530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180083970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180085500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180087030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180088470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180090000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180091530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Before
> avformat_find_stream_info() pos: 543003 bytes read:543003 seeks:0
> nb_streams:1
> [h264 @ 0x55b6bf064480] nal_unit_type: 7(SPS), nal_ref_idc: 3
> [h264 @ 0x55b6bf064480] nal_unit_type: 8(PPS), nal_ref_idc: 3
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] stream 0, offset 0x885:
> partial file
> [h264 @ 0x55b6bf064480] nal_unit_type: 7(SPS), nal_ref_idc: 3
> [h264 @ 0x55b6bf064480] nal_unit_type: 8(PPS), nal_ref_idc: 3
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Could not find codec
> parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none,
> 1920x1080, 2 kb/s): unspecified pixel format
> Consider increasing the value for the 'analyzeduration' (0) and
> 'probesize' (5000000) options
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] After
> avformat_find_stream_info() pos: 543003 bytes read:543003 seeks:0
> frames:0
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'unix:///tmp/abcd':
>   Metadata:
>     major_brand     : dash
>     minor_version   : 0
>     compatible_brands: iso6avc1mp41
>     creation_time   : 2021-07-23T10:29:14.000000Z
>   Duration: 00:33:21.03, bitrate: N/A
>   Stream #0:0(und), 0, 1/90000: Video: h264 (avc1 / 0x31637661), none,
> 1920x1080, 2 kb/s, 60 fps, 90k tbr, 90k tbn, 180k tbc (default)
>     Metadata:
>       creation_time   : 2021-07-23T10:29:14.000000Z
>       handler_name    : ISO Media file produced by Google Inc. Created
> on: 07/23/2021.
>       vendor_id       : [0][0][0][0]
> Successfully opened the file.
> Parsing a group of options: output url out.mkv.
> Applying option c (codec name) with argument copy.
> Successfully parsed a group of options.
> Opening an output file: out.mkv.
> [file @ 0x55b6bf06a380] Setting default whitelist 'file,crypto,data'
> Successfully opened the file.
> [matroska @ 0x55b6bf08fec0] get_metadata_duration returned: 0
> Output #0, matroska, to 'out.mkv':
>   Metadata:
>     major_brand     : dash
>     minor_version   : 0
>     compatible_brands: iso6avc1mp41
>     encoder         : Lavf58.76.100
>   Stream #0:0(und), 0, 1/1000: Video: h264 (avc1 / 0x31637661), none,
> 1920x1080, q=2-31, 2 kb/s, 60 fps, 90k tbr, 1k tbn, 90k tbc (default)
>     Metadata:
>       creation_time   : 2021-07-23T10:29:14.000000Z
>       handler_name    : ISO Media file produced by Google Inc. Created
> on: 07/23/2021.
>       vendor_id       : [0][0][0][0]
> Stream mapping:
>   Stream #0:0 -> #0:0 (copy)
> Press [q] to stop, [?] for help
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
> if it occurs once at the start per stream)
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] stream 0, offset 0x3aa3c:
> partial file
> unix:///tmp/abcd: Invalid data found when processing input
> frame=    0 fps=0.0 q=-1.0 size=       1kB time=00:00:00.00 bitrate=N/A
> speed=N/A
> No more output streams to write to, finishing.
> [matroska @ 0x55b6bf08fec0] end duration = 0
> [matroska @ 0x55b6bf08fec0] stream 0 end duration = 0
> frame=    0 fps=0.0 q=-1.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A
> speed=   0x
> video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: unknown
> Input file #0 (unix:///tmp/abcd):
>   Input stream #0:0 (video): 0 packets read (0 bytes);
>   Total: 0 packets (0 bytes) demuxed
> Output file #0 (out.mkv):
>   Output stream #0:0 (video): 0 packets muxed (0 bytes);
>   Total: 0 packets (0 bytes) muxed
> 0 frames successfully decoded, 0 decoding errors
> [AVIOContext @ 0x55b6bf06a5c0] Statistics: 0 seeks, 1 writeouts
> [AVIOContext @ 0x55b6bf06b4c0] Statistics: 543003 bytes read, 0 seeks
> }}}
> as normal file:
> {{{
> % ffmpeg -report -i 1.mp4 -c copy out.mkv
> }}}
> {{{
> ffmpeg started on 2021-07-24 at 23:18:12
> Report written to "ffmpeg-20210724-231812.log"
> Log level: 48
> Command line:
> ffmpeg -report -i 1.mp4 -c copy out.mkv
> ffmpeg version n4.4 Copyright (c) 2000-2021 the FFmpeg developers
>   built with gcc 11.1.0 (GCC)
>   configuration: --prefix=/usr --disable-debug --disable-static
> --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm
> --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-
> gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray
> --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-
> libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack
> --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-
> libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg
> --enable-libopus --enable-libpulse --enable-librav1e --enable-librsvg
> --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh
> --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-
> libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-
> libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-
> libxml2 --enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc
> --enable-shared --enable-version3
>   libavutil      56. 70.100 / 56. 70.100
>   libavcodec     58.134.100 / 58.134.100
>   libavformat    58. 76.100 / 58. 76.100
>   libavdevice    58. 13.100 / 58. 13.100
>   libavfilter     7.110.100 /  7.110.100
>   libswscale      5.  9.100 /  5.  9.100
>   libswresample   3.  9.100 /  3.  9.100
>   libpostproc    55.  9.100 / 55.  9.100
> Splitting the commandline.
> Reading option '-report' ... matched as option 'report' (generate a
> report) with argument '1'.
> Reading option '-i' ... matched as input url with argument '1.mp4'.
> Reading option '-c' ... matched as option 'c' (codec name) with argument
> 'copy'.
> Reading option 'out.mkv' ... matched as output url.
> Finished splitting the commandline.
> Parsing a group of options: global .
> Applying option report (generate a report) with argument 1.
> Successfully parsed a group of options.
> Parsing a group of options: input url 1.mp4.
> Successfully parsed a group of options.
> Opening an input file: 1.mp4.
> [NULL @ 0x562e0207f440] Opening '1.mp4' for reading
> [file @ 0x562e020800c0] Setting default whitelist 'file,crypto,data'
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Format mov,mp4,m4a,3gp,3g2,mj2
> probed with size=2048 and score=100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] ISO: File Type Major Brand:
> dash
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Unknown dref type 0x206c7275
> size 12
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180002970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180004500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180006030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180007470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180009000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180010530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180011970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180013500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180015030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180016470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180018000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180019530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180020970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180022500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180024030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180025470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180027000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180028530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180029970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180031500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180033030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180034470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180036000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180037530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180038970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180040500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180042030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180043470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180045000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180046530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180047970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180049500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180051030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180052470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180054000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180055530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180056970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180058500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180060030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180061470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180063000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180064530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180065970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180067500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180069030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180070470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180072000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180073530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180074970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180076500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180078030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180079470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180081000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180082530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180083970,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180085500,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180087030,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180088470,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180090000,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180091530,
> using it for dts
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Before
> avformat_find_stream_info() pos: 538788 bytes read:335691 seeks:1
> nb_streams:1
> [h264 @ 0x562e02081440] nal_unit_type: 7(SPS), nal_ref_idc: 3
> [h264 @ 0x562e02081440] nal_unit_type: 8(PPS), nal_ref_idc: 3
> [h264 @ 0x562e02081440] nal_unit_type: 7(SPS), nal_ref_idc: 3
> [h264 @ 0x562e02081440] nal_unit_type: 8(PPS), nal_ref_idc: 3
> [h264 @ 0x562e02081440] nal_unit_type: 5(IDR), nal_ref_idc: 1
> [h264 @ 0x562e02081440] Format yuv420p chosen by get_format().
> [h264 @ 0x562e02081440] Reinit context to 1920x1088, pix_fmt: yuv420p
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
> picture), nal_ref_idc: 1
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] All info found
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.000000 0.009372
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.000000 0.009372
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 60.000000 0.000259
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 120.000000 0.001036
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 240.000000 0.004144
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.940060 0.000285
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.940060 0.000285
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] After
> avformat_find_stream_info() pos: 325855 bytes read:671894 seeks:2
> frames:21
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
>   Metadata:
>     major_brand     : dash
>     minor_version   : 0
>     compatible_brands: iso6avc1mp41
>     creation_time   : 2021-07-23T10:29:14.000000Z
>   Duration: 00:33:21.03, start: 2000.033000, bitrate: 2 kb/s
>   Stream #0:0(und), 21, 1/90000: Video: h264 (Main) (avc1 / 0x31637661),
> yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2 kb/s, 60
> fps, 60 tbr, 90k tbn, 120 tbc (default)
>     Metadata:
>       creation_time   : 2021-07-23T10:29:14.000000Z
>       handler_name    : ISO Media file produced by Google Inc. Created
> on: 07/23/2021.
>       vendor_id       : [0][0][0][0]
> Successfully opened the file.
> Parsing a group of options: output url out.mkv.
> Applying option c (codec name) with argument copy.
> Successfully parsed a group of options.
> Opening an output file: out.mkv.
> [file @ 0x562e021a7b40] Setting default whitelist 'file,crypto,data'
> Successfully opened the file.
> [matroska @ 0x562e020a9140] get_metadata_duration returned: 0
> Output #0, matroska, to 'out.mkv':
>   Metadata:
>     major_brand     : dash
>     minor_version   : 0
>     compatible_brands: iso6avc1mp41
>     encoder         : Lavf58.76.100
>   Stream #0:0(und), 0, 1/1000: Video: h264 (Main) (avc1 / 0x31637661),
> yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2
> kb/s, 60 fps, 60 tbr, 1k tbn, 90k tbc (default)
>     Metadata:
>       creation_time   : 2021-07-23T10:29:14.000000Z
>       handler_name    : ISO Media file produced by Google Inc. Created
> on: 07/23/2021.
>       vendor_id       : [0][0][0][0]
> Stream mapping:
>   Stream #0:0 -> #0:0 (copy)
> Press [q] to stop, [?] for help
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
> if it occurs once at the start per stream)
> [matroska @ 0x562e020a9140] Starting new cluster with timestamp 0 at
> offset 813 bytes
> [matroska @ 0x562e020a9140] Writing block of size 237899 with pts 0, dts
> 0, duration 17 at relative offset 9 in cluster at offset 813. TrackNumber
> 1, keyframe 1
> frame=    1 fps=0.0 q=-1.0 size=       1kB time=00:00:00.00
> bitrate=6504.0kbits/s speed=N/A
> [matroska @ 0x562e020a9140] Writing block of size 3299 with pts 17, dts
> 17, duration 17 at relative offset 237916 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 3590 with pts 34, dts
> 34, duration 17 at relative offset 241222 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5085 with pts 50, dts
> 50, duration 17 at relative offset 244819 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5473 with pts 67, dts
> 67, duration 17 at relative offset 249911 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 450 with pts 84, dts
> 84, duration 17 at relative offset 255391 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5351 with pts 100, dts
> 100, duration 17 at relative offset 255848 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 2725 with pts 117, dts
> 117, duration 17 at relative offset 261206 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5392 with pts 134, dts
> 134, duration 17 at relative offset 263938 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4868 with pts 150, dts
> 150, duration 17 at relative offset 269337 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6532 with pts 167, dts
> 167, duration 17 at relative offset 274212 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5220 with pts 184, dts
> 184, duration 17 at relative offset 280751 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4625 with pts 200, dts
> 200, duration 17 at relative offset 285978 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6163 with pts 217, dts
> 217, duration 17 at relative offset 290610 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4404 with pts 234, dts
> 234, duration 17 at relative offset 296780 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 2283 with pts 250, dts
> 250, duration 17 at relative offset 301191 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5051 with pts 267, dts
> 267, duration 17 at relative offset 303481 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 2612 with pts 284, dts
> 284, duration 17 at relative offset 308539 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4273 with pts 300, dts
> 300, duration 17 at relative offset 311158 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5313 with pts 317, dts
> 317, duration 17 at relative offset 315438 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 906 with pts 334, dts
> 334, duration 17 at relative offset 320758 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5078 with pts 350, dts
> 350, duration 17 at relative offset 321671 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6375 with pts 367, dts
> 367, duration 17 at relative offset 326756 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4300 with pts 384, dts
> 384, duration 17 at relative offset 333138 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5380 with pts 400, dts
> 400, duration 17 at relative offset 337445 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5098 with pts 417, dts
> 417, duration 17 at relative offset 342832 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6783 with pts 434, dts
> 434, duration 17 at relative offset 347937 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 10311 with pts 450, dts
> 450, duration 17 at relative offset 354727 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 8328 with pts 467, dts
> 467, duration 17 at relative offset 365045 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6470 with pts 484, dts
> 484, duration 17 at relative offset 373380 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5430 with pts 500, dts
> 500, duration 17 at relative offset 379857 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5271 with pts 517, dts
> 517, duration 17 at relative offset 385294 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4991 with pts 534, dts
> 534, duration 17 at relative offset 390572 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6380 with pts 550, dts
> 550, duration 17 at relative offset 395570 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5495 with pts 567, dts
> 567, duration 17 at relative offset 401957 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4340 with pts 584, dts
> 584, duration 17 at relative offset 407459 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5432 with pts 600, dts
> 600, duration 17 at relative offset 411806 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5549 with pts 617, dts
> 617, duration 17 at relative offset 417245 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4001 with pts 634, dts
> 634, duration 17 at relative offset 422801 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 3842 with pts 650, dts
> 650, duration 17 at relative offset 426809 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 3661 with pts 667, dts
> 667, duration 17 at relative offset 430658 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5283 with pts 684, dts
> 684, duration 17 at relative offset 434326 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5755 with pts 700, dts
> 700, duration 17 at relative offset 439616 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5392 with pts 717, dts
> 717, duration 17 at relative offset 445378 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 3386 with pts 734, dts
> 734, duration 17 at relative offset 450777 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6487 with pts 750, dts
> 750, duration 17 at relative offset 454170 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6699 with pts 767, dts
> 767, duration 17 at relative offset 460664 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5304 with pts 784, dts
> 784, duration 17 at relative offset 467370 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6309 with pts 800, dts
> 800, duration 17 at relative offset 472681 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6159 with pts 817, dts
> 817, duration 17 at relative offset 478997 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4314 with pts 834, dts
> 834, duration 17 at relative offset 485163 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4979 with pts 850, dts
> 850, duration 17 at relative offset 489484 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5891 with pts 867, dts
> 867, duration 17 at relative offset 494470 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4320 with pts 884, dts
> 884, duration 17 at relative offset 500368 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 6222 with pts 900, dts
> 900, duration 17 at relative offset 504695 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 3915 with pts 917, dts
> 917, duration 17 at relative offset 510924 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5739 with pts 934, dts
> 934, duration 17 at relative offset 514846 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 5626 with pts 950, dts
> 950, duration 17 at relative offset 520592 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4426 with pts 967, dts
> 967, duration 17 at relative offset 526225 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> [matroska @ 0x562e020a9140] Writing block of size 4215 with pts 984, dts
> 984, duration 17 at relative offset 530658 in cluster at offset 813.
> TrackNumber 1, keyframe 0
> No more output streams to write to, finishing.
> [matroska @ 0x562e020a9140] end duration = 1001
> [matroska @ 0x562e020a9140] stream 0 end duration = 1001
> frame=   60 fps=0.0 q=-1.0 Lsize=     523kB time=00:00:00.98
> bitrate=4351.1kbits/s speed= 437x
> video:522kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: 0.239124%
> Input file #0 (1.mp4):
>   Input stream #0:0 (video): 60 packets read (534450 bytes);
>   Total: 60 packets (534450 bytes) demuxed
> Output file #0 (out.mkv):
>   Output stream #0:0 (video): 60 packets muxed (534450 bytes);
>   Total: 60 packets (534450 bytes) muxed
> 0 frames successfully decoded, 0 decoding errors
> [AVIOContext @ 0x562e021aba40] Statistics: 2 seeks, 4 writeouts
> [AVIOContext @ 0x562e02088480] Statistics: 876513 bytes read, 2 seeks
> }}}

New description:

 Failed when via unix socket, but nothing wrong when you input it just as a
 normal file.
 The mp4 file could be found in attatchment.
 log of unix socket one:
 {{{
 % cat 1.mp4 | socat - unix-listen:/tmp/abcd &
 % ffmpeg -report  -i unix:///tmp/abcd -c copy out.mkv
 }}}
 {{{
 ffmpeg started on 2021-07-24 at 23:10:04
 Report written to "ffmpeg-20210724-231004.log"
 Log level: 48
 Command line:
 ffmpeg -report -i unix:///tmp/abcd -c copy out.mkv
 ffmpeg version n4.4 Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 11.1.0 (GCC)
   configuration: --prefix=/usr --disable-debug --disable-static --disable-
 stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto
 --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-
 ladspa --enable-libaom --enable-libass --enable-libbluray --enable-
 libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi
 --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx
 --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb
 --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-
 libpulse --enable-librav1e --enable-librsvg --enable-libsoxr --enable-
 libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-
 libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-
 libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-
 libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg
 --enable-nvdec --enable-nvenc --enable-shared --enable-version3
   libavutil      56. 70.100 / 56. 70.100
   libavcodec     58.134.100 / 58.134.100
   libavformat    58. 76.100 / 58. 76.100
   libavdevice    58. 13.100 / 58. 13.100
   libavfilter     7.110.100 /  7.110.100
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 Splitting the commandline.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option '-i' ... matched as input url with argument
 'unix:///tmp/abcd'.
 Reading option '-c' ... matched as option 'c' (codec name) with argument
 'copy'.
 Reading option 'out.mkv' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option report (generate a report) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input url unix:///tmp/abcd.
 Successfully parsed a group of options.
 Opening an input file: unix:///tmp/abcd.
 [NULL @ 0x55b6bf062440] Opening 'unix:///tmp/abcd' for reading
 [unix @ 0x55b6bf0630c0] No default whitelist set
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Format mov,mp4,m4a,3gp,3g2,mj2
 probed with size=2048 and score=100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] ISO: File Type Major Brand:
 dash
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Unknown dref type 0x206c7275
 size 12
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180002970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180004500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180006030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180007470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180009000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180010530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180011970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180013500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180015030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180016470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180018000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180019530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180020970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180022500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180024030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180025470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180027000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180028530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180029970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180031500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180033030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180034470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180036000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180037530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180038970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180040500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180042030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180043470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180045000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180046530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180047970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180049500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180051030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180052470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180054000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180055530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180056970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180058500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180060030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180061470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180063000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180064530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180065970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180067500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180069030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180070470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180072000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180073530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180074970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180076500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180078030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180079470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180081000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180082530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180083970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180085500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180087030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180088470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180090000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] found tfdt time 180091530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Before
 avformat_find_stream_info() pos: 543003 bytes read:543003 seeks:0
 nb_streams:1
 [h264 @ 0x55b6bf064480] nal_unit_type: 7(SPS), nal_ref_idc: 3
 [h264 @ 0x55b6bf064480] nal_unit_type: 8(PPS), nal_ref_idc: 3
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] stream 0, offset 0x885: partial
 file
 [h264 @ 0x55b6bf064480] nal_unit_type: 7(SPS), nal_ref_idc: 3
 [h264 @ 0x55b6bf064480] nal_unit_type: 8(PPS), nal_ref_idc: 3
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] Could not find codec parameters
 for stream 0 (Video: h264 (avc1 / 0x31637661), none, 1920x1080, 2 kb/s):
 unspecified pixel format
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] After
 avformat_find_stream_info() pos: 543003 bytes read:543003 seeks:0 frames:0
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'unix:///tmp/abcd':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6avc1mp41
     creation_time   : 2021-07-23T10:29:14.000000Z
   Duration: 00:33:21.03, bitrate: N/A
   Stream #0:0(und), 0, 1/90000: Video: h264 (avc1 / 0x31637661), none,
 1920x1080, 2 kb/s, 60 fps, 90k tbr, 90k tbn, 180k tbc (default)
     Metadata:
       creation_time   : 2021-07-23T10:29:14.000000Z
       handler_name    : ISO Media file produced by Google Inc. Created on:
 07/23/2021.
       vendor_id       : [0][0][0][0]
 Successfully opened the file.
 Parsing a group of options: output url out.mkv.
 Applying option c (codec name) with argument copy.
 Successfully parsed a group of options.
 Opening an output file: out.mkv.
 [file @ 0x55b6bf06a380] Setting default whitelist 'file,crypto,data'
 Successfully opened the file.
 [matroska @ 0x55b6bf08fec0] get_metadata_duration returned: 0
 Output #0, matroska, to 'out.mkv':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6avc1mp41
     encoder         : Lavf58.76.100
   Stream #0:0(und), 0, 1/1000: Video: h264 (avc1 / 0x31637661), none,
 1920x1080, q=2-31, 2 kb/s, 60 fps, 90k tbr, 1k tbn, 90k tbc (default)
     Metadata:
       creation_time   : 2021-07-23T10:29:14.000000Z
       handler_name    : ISO Media file produced by Google Inc. Created on:
 07/23/2021.
       vendor_id       : [0][0][0][0]
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55b6bf062440] stream 0, offset 0x3aa3c:
 partial file
 unix:///tmp/abcd: Invalid data found when processing input
 frame=    0 fps=0.0 q=-1.0 size=       1kB time=00:00:00.00 bitrate=N/A
 speed=N/A
 No more output streams to write to, finishing.
 [matroska @ 0x55b6bf08fec0] end duration = 0
 [matroska @ 0x55b6bf08fec0] stream 0 end duration = 0
 frame=    0 fps=0.0 q=-1.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A
 speed=   0x
 video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 Input file #0 (unix:///tmp/abcd):
   Input stream #0:0 (video): 0 packets read (0 bytes);
   Total: 0 packets (0 bytes) demuxed
 Output file #0 (out.mkv):
   Output stream #0:0 (video): 0 packets muxed (0 bytes);
   Total: 0 packets (0 bytes) muxed
 0 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 0x55b6bf06a5c0] Statistics: 0 seeks, 1 writeouts
 [AVIOContext @ 0x55b6bf06b4c0] Statistics: 543003 bytes read, 0 seeks
 }}}
 as normal file:
 {{{
 % ffmpeg -report -i 1.mp4 -c copy out.mkv
 }}}
 {{{
 ffmpeg started on 2021-07-24 at 23:18:12
 Report written to "ffmpeg-20210724-231812.log"
 Log level: 48
 Command line:
 ffmpeg -report -i 1.mp4 -c copy out.mkv
 ffmpeg version n4.4 Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 11.1.0 (GCC)
   configuration: --prefix=/usr --disable-debug --disable-static --disable-
 stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto
 --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-
 ladspa --enable-libaom --enable-libass --enable-libbluray --enable-
 libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi
 --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx
 --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb
 --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-
 libpulse --enable-librav1e --enable-librsvg --enable-libsoxr --enable-
 libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-
 libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-
 libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-
 libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg
 --enable-nvdec --enable-nvenc --enable-shared --enable-version3
   libavutil      56. 70.100 / 56. 70.100
   libavcodec     58.134.100 / 58.134.100
   libavformat    58. 76.100 / 58. 76.100
   libavdevice    58. 13.100 / 58. 13.100
   libavfilter     7.110.100 /  7.110.100
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 Splitting the commandline.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option '-i' ... matched as input url with argument '1.mp4'.
 Reading option '-c' ... matched as option 'c' (codec name) with argument
 'copy'.
 Reading option 'out.mkv' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option report (generate a report) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input url 1.mp4.
 Successfully parsed a group of options.
 Opening an input file: 1.mp4.
 [NULL @ 0x562e0207f440] Opening '1.mp4' for reading
 [file @ 0x562e020800c0] Setting default whitelist 'file,crypto,data'
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Format mov,mp4,m4a,3gp,3g2,mj2
 probed with size=2048 and score=100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] ISO: File Type Major Brand:
 dash
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Unknown dref type 0x206c7275
 size 12
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180002970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180004500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180006030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180007470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180009000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180010530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180011970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180013500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180015030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180016470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180018000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180019530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180020970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180022500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180024030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180025470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180027000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180028530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180029970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180031500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180033030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180034470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180036000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180037530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180038970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180040500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180042030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180043470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180045000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180046530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180047970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180049500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180051030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180052470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180054000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180055530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180056970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180058500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180060030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180061470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180063000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180064530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180065970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180067500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180069030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180070470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180072000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180073530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180074970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180076500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180078030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180079470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180081000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180082530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180083970,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180085500,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180087030,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180088470,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180090000,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] found tfdt time 180091530,
 using it for dts
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] Before
 avformat_find_stream_info() pos: 538788 bytes read:335691 seeks:1
 nb_streams:1
 [h264 @ 0x562e02081440] nal_unit_type: 7(SPS), nal_ref_idc: 3
 [h264 @ 0x562e02081440] nal_unit_type: 8(PPS), nal_ref_idc: 3
 [h264 @ 0x562e02081440] nal_unit_type: 7(SPS), nal_ref_idc: 3
 [h264 @ 0x562e02081440] nal_unit_type: 8(PPS), nal_ref_idc: 3
 [h264 @ 0x562e02081440] nal_unit_type: 5(IDR), nal_ref_idc: 1
 [h264 @ 0x562e02081440] Format yuv420p chosen by get_format().
 [h264 @ 0x562e02081440] Reinit context to 1920x1088, pix_fmt: yuv420p
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [h264 @ 0x562e02081440] nal_unit_type: 1(Coded slice of a non-IDR
 picture), nal_ref_idc: 1
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] All info found
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.000000 0.009372
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.000000 0.009372
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 60.000000 0.000259
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 120.000000 0.001036
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 240.000000 0.004144
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.940060 0.000285
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] rfps: 59.940060 0.000285
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e0207f440] After
 avformat_find_stream_info() pos: 325855 bytes read:671894 seeks:2
 frames:21
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6avc1mp41
     creation_time   : 2021-07-23T10:29:14.000000Z
   Duration: 00:33:21.03, start: 2000.033000, bitrate: 2 kb/s
   Stream #0:0(und), 21, 1/90000: Video: h264 (Main) (avc1 / 0x31637661),
 yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2 kb/s, 60
 fps, 60 tbr, 90k tbn, 120 tbc (default)
     Metadata:
       creation_time   : 2021-07-23T10:29:14.000000Z
       handler_name    : ISO Media file produced by Google Inc. Created on:
 07/23/2021.
       vendor_id       : [0][0][0][0]
 Successfully opened the file.
 Parsing a group of options: output url out.mkv.
 Applying option c (codec name) with argument copy.
 Successfully parsed a group of options.
 Opening an output file: out.mkv.
 [file @ 0x562e021a7b40] Setting default whitelist 'file,crypto,data'
 Successfully opened the file.
 [matroska @ 0x562e020a9140] get_metadata_duration returned: 0
 Output #0, matroska, to 'out.mkv':
   Metadata:
     major_brand     : dash
     minor_version   : 0
     compatible_brands: iso6avc1mp41
     encoder         : Lavf58.76.100
   Stream #0:0(und), 0, 1/1000: Video: h264 (Main) (avc1 / 0x31637661),
 yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2
 kb/s, 60 fps, 60 tbr, 1k tbn, 90k tbc (default)
     Metadata:
       creation_time   : 2021-07-23T10:29:14.000000Z
       handler_name    : ISO Media file produced by Google Inc. Created on:
 07/23/2021.
       vendor_id       : [0][0][0][0]
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [matroska @ 0x562e020a9140] Starting new cluster with timestamp 0 at
 offset 813 bytes
 [matroska @ 0x562e020a9140] Writing block of size 237899 with pts 0, dts
 0, duration 17 at relative offset 9 in cluster at offset 813. TrackNumber
 1, keyframe 1
 frame=    1 fps=0.0 q=-1.0 size=       1kB time=00:00:00.00
 bitrate=6504.0kbits/s speed=N/A
 [matroska @ 0x562e020a9140] Writing block of size 3299 with pts 17, dts
 17, duration 17 at relative offset 237916 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 3590 with pts 34, dts
 34, duration 17 at relative offset 241222 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5085 with pts 50, dts
 50, duration 17 at relative offset 244819 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5473 with pts 67, dts
 67, duration 17 at relative offset 249911 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 450 with pts 84, dts 84,
 duration 17 at relative offset 255391 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5351 with pts 100, dts
 100, duration 17 at relative offset 255848 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 2725 with pts 117, dts
 117, duration 17 at relative offset 261206 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5392 with pts 134, dts
 134, duration 17 at relative offset 263938 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4868 with pts 150, dts
 150, duration 17 at relative offset 269337 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6532 with pts 167, dts
 167, duration 17 at relative offset 274212 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5220 with pts 184, dts
 184, duration 17 at relative offset 280751 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4625 with pts 200, dts
 200, duration 17 at relative offset 285978 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6163 with pts 217, dts
 217, duration 17 at relative offset 290610 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4404 with pts 234, dts
 234, duration 17 at relative offset 296780 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 2283 with pts 250, dts
 250, duration 17 at relative offset 301191 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5051 with pts 267, dts
 267, duration 17 at relative offset 303481 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 2612 with pts 284, dts
 284, duration 17 at relative offset 308539 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4273 with pts 300, dts
 300, duration 17 at relative offset 311158 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5313 with pts 317, dts
 317, duration 17 at relative offset 315438 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 906 with pts 334, dts
 334, duration 17 at relative offset 320758 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5078 with pts 350, dts
 350, duration 17 at relative offset 321671 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6375 with pts 367, dts
 367, duration 17 at relative offset 326756 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4300 with pts 384, dts
 384, duration 17 at relative offset 333138 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5380 with pts 400, dts
 400, duration 17 at relative offset 337445 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5098 with pts 417, dts
 417, duration 17 at relative offset 342832 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6783 with pts 434, dts
 434, duration 17 at relative offset 347937 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 10311 with pts 450, dts
 450, duration 17 at relative offset 354727 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 8328 with pts 467, dts
 467, duration 17 at relative offset 365045 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6470 with pts 484, dts
 484, duration 17 at relative offset 373380 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5430 with pts 500, dts
 500, duration 17 at relative offset 379857 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5271 with pts 517, dts
 517, duration 17 at relative offset 385294 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4991 with pts 534, dts
 534, duration 17 at relative offset 390572 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6380 with pts 550, dts
 550, duration 17 at relative offset 395570 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5495 with pts 567, dts
 567, duration 17 at relative offset 401957 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4340 with pts 584, dts
 584, duration 17 at relative offset 407459 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5432 with pts 600, dts
 600, duration 17 at relative offset 411806 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5549 with pts 617, dts
 617, duration 17 at relative offset 417245 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4001 with pts 634, dts
 634, duration 17 at relative offset 422801 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 3842 with pts 650, dts
 650, duration 17 at relative offset 426809 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 3661 with pts 667, dts
 667, duration 17 at relative offset 430658 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5283 with pts 684, dts
 684, duration 17 at relative offset 434326 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5755 with pts 700, dts
 700, duration 17 at relative offset 439616 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5392 with pts 717, dts
 717, duration 17 at relative offset 445378 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 3386 with pts 734, dts
 734, duration 17 at relative offset 450777 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6487 with pts 750, dts
 750, duration 17 at relative offset 454170 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6699 with pts 767, dts
 767, duration 17 at relative offset 460664 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5304 with pts 784, dts
 784, duration 17 at relative offset 467370 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6309 with pts 800, dts
 800, duration 17 at relative offset 472681 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6159 with pts 817, dts
 817, duration 17 at relative offset 478997 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4314 with pts 834, dts
 834, duration 17 at relative offset 485163 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4979 with pts 850, dts
 850, duration 17 at relative offset 489484 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5891 with pts 867, dts
 867, duration 17 at relative offset 494470 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4320 with pts 884, dts
 884, duration 17 at relative offset 500368 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 6222 with pts 900, dts
 900, duration 17 at relative offset 504695 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 3915 with pts 917, dts
 917, duration 17 at relative offset 510924 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5739 with pts 934, dts
 934, duration 17 at relative offset 514846 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 5626 with pts 950, dts
 950, duration 17 at relative offset 520592 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4426 with pts 967, dts
 967, duration 17 at relative offset 526225 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 [matroska @ 0x562e020a9140] Writing block of size 4215 with pts 984, dts
 984, duration 17 at relative offset 530658 in cluster at offset 813.
 TrackNumber 1, keyframe 0
 No more output streams to write to, finishing.
 [matroska @ 0x562e020a9140] end duration = 1001
 [matroska @ 0x562e020a9140] stream 0 end duration = 1001
 frame=   60 fps=0.0 q=-1.0 Lsize=     523kB time=00:00:00.98
 bitrate=4351.1kbits/s speed= 437x
 video:522kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.239124%
 Input file #0 (1.mp4):
   Input stream #0:0 (video): 60 packets read (534450 bytes);
   Total: 60 packets (534450 bytes) demuxed
 Output file #0 (out.mkv):
   Output stream #0:0 (video): 60 packets muxed (534450 bytes);
   Total: 60 packets (534450 bytes) muxed
 0 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 0x562e021aba40] Statistics: 2 seeks, 4 writeouts
 [AVIOContext @ 0x562e02088480] Statistics: 876513 bytes read, 2 seeks
 }}}

--
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9346#comment:1>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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