[FFmpeg-trac] #4522(undetermined:new): Video data difference when HEVC Raw bit stream to mp4 with vcodec copy option

FFmpeg trac at avcodec.org
Tue Apr 28 10:53:02 CEST 2015


#4522: Video data difference when HEVC Raw bit stream to mp4 with vcodec copy
option
-------------------------------------+-------------------------------------
             Reporter:  kgp700       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I was copy stream HEVC Raw bit stream (bin) to mp4 on ffmpeg
 and hex compared HEVC Raw bit stream and mp4

 Result was too many data changed (please reference screenshot)

 I know add data on header and moov part
 but why so many difference on bit stream part?

 If played both video, I can't find any difference
 but why can see so many difference on hex data?
 Have reason? or Is it bug?

 How to reproduce:
 {{{
 ffmpeg -report -i "DSLICE_C_HHI_5.bin" -vcodec copy -an
 "DSLICE_C_HHI_5.mp4"
 }}}

 [[Image(http://i.imgur.com/9S0xfgj.png)]]


 Log:
 {{{
 ffmpeg started on 2015-04-28 at 17:44:28
 Report written to "ffmpeg-20150428-174428.log"
 Command line:
 ffmpeg -report -i DSLICE_C_HHI_5.bin -vcodec copy -an DSLICE_C_HHI_5.mp4
 ffmpeg version N-71471-ged2a712 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.9.1 (GCC)
   configuration: --arch=x86 --target-os=mingw32 --cross-
 prefix=/home/kgpbuild/ffmpegbuild5/sandbox/mingw-w64-i686/bin/i686-w64-mingw32-
 --pkg-config=pkg-config --enable-gpl --enable-libx264 --enable-avisynth
 --enable-libxvid --enable-libmp3lame --enable-version3 --enable-zlib
 --enable-librtmp --enable-libvorbis --enable-libtheora --enable-libspeex
 --enable-libopenjpeg --enable-gnutls --enable-libgsm --enable-libfreetype
 --enable-libopus --disable-w32threads --enable-pthreads --enable-frei0r
 --enable-filter=frei0r --enable-libvo-aacenc --enable-bzlib --enable-
 libxavs --extra-cflags=-DPTW32_STATIC_LIB --extra-cflags=-DPTHREAD_STATIC
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-
 amrwbenc --enable-libschroedinger --enable-libfdk-aac --enable-libvpx
 --disable-libilbc
 --prefix=/home/kgpbuild/ffmpegbuild5/sandbox/mingw-w64-i686/i686-w64-mingw32
 --enable-static --disable-shared --enable-libsoxr --enable-fontconfig
 --enable-libass --enable-libutvideo --enable-libbluray --enable-iconv
 --enable-l  libavutil      54. 22.101 / 54. 22.101
   libavcodec     56. 34.100 / 56. 34.100
   libavformat    56. 30.100 / 56. 30.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 14.100 /  5. 14.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Splitting the commandline.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option '-i' ... matched as input file with argument
 'DSLICE_C_HHI_5.bin'.
 Reading option '-vcodec' ... matched as option 'vcodec' (force video codec
 ('copy' to copy stream)) with argument 'copy'.
 Reading option '-an' ... matched as option 'an' (disable audio) with
 argument '1'.
 Reading option 'DSLICE_C_HHI_5.mp4' ... matched as output file.
 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 file DSLICE_C_HHI_5.bin.
 Successfully parsed a group of options.
 Opening an input file: DSLICE_C_HHI_5.bin.
 [hevc @ 04925380] Format hevc probed with size=2048 and score=51
 [hevc @ 04925380] Before avformat_find_stream_info() pos: 0 bytes
 read:32768 seeks:0
 [hevc @ 04926560] Decoding VPS
 [hevc @ 04926560] Main profile bitstream
 [hevc @ 04926560] Decoding SPS
 [hevc @ 04926560] Main profile bitstream
 [hevc @ 04926560] Decoding PPS
 [hevc @ 04926560] nal_unit_type: 32, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 33, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 34, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 40, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 32, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] Decoding VPS
 [hevc @ 04926560] Main profile bitstream
 [hevc @ 04926560] nal_unit_type: 33, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] Decoding SPS
 [hevc @ 04926560] Main profile bitstream
 [hevc @ 04926560] nal_unit_type: 34, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] Decoding PPS
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 19, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] nal_unit_type: 40, nuh_layer_id: 0, temporal_id: 0
 [hevc @ 04926560] Decoding SEI
 [hevc @ 04926560] Decoded frame with POC 0.
 [hevc @ 04925380] All info found
 [hevc @ 04925380] After avformat_find_stream_info() pos: 373275 bytes
 read:373275 seeks:0 frames:50
 Input #0, hevc, from 'DSLICE_C_HHI_5.bin':
   Duration: N/A, bitrate: N/A
     Stream #0:0, 50, 1/1200000: Video: hevc (Main), yuv420p(tv),
 1920x1080, 25 fps, 25 tbr, 1200k tbn, 25 tbc
 Successfully opened the file.
 Parsing a group of options: output file DSLICE_C_HHI_5.mp4.
 Applying option vcodec (force video codec ('copy' to copy stream)) with
 argument copy.
 Applying option an (disable audio) with argument 1.
 Successfully parsed a group of options.
 Opening an output file: DSLICE_C_HHI_5.mp4.
 Successfully opened the file.
 [mp4 @ 05361840] Codec for stream 0 does not use global headers but
 container format requires global headers
 Output #0, mp4, to 'DSLICE_C_HHI_5.mp4':
   Metadata:
     encoder         : Lavf56.30.100
     Stream #0:0, 0, 1/1200000: Video: hevc ([35][0][0][0] / 0x0023),
 yuv420p, 1920x1080, q=2-31, 25 fps, 25 tbr, 1200k tbn, 1200k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 [mp4 @ 05361840] pts has no value
 No more output streams to write to, finishing.
 frame=   50 fps=0.0 q=-1.0 Lsize=     366kB time=00:00:01.84
 bitrate=1631.2kbits/s
 video:365kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.508204%
 Input file #0 (DSLICE_C_HHI_5.bin):
   Input stream #0:0 (video): 50 packets read (373275 bytes);
   Total: 50 packets (373275 bytes) demuxed
 Output file #0 (DSLICE_C_HHI_5.mp4):
   Output stream #0:0 (video): 50 packets muxed (373275 bytes);
   Total: 50 packets (373275 bytes) muxed
 0 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 04927460] Statistics: 34 seeks, 78 writeouts
 [AVIOContext @ 04925b60] Statistics: 373275 bytes read, 0 seeks

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4522>
FFmpeg <https://ffmpeg.org>
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