[FFmpeg-trac] #7974(avcodec:new): RTSP h265 input produces invalid MP4 output with -c copy

FFmpeg trac at avcodec.org
Wed Jun 26 14:21:33 EEST 2019 

#7974: RTSP h265 input produces invalid MP4 output with -c copy
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  kennylevinsen                      |
               Status:  new          |                 Priority:  normal
            Component:  avcodec      |                  Version:  git-
                                     |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Taking a RTSP HEVC main profile input from a HikVision IP PTZ camera, and
 producing an mp4 with -c copy, results in an invalid mp4 file.

 Reading this mp4 file results in the following errors:

 {{{
 [AVBSFContext @ 0x55f87e9a1f00] No start code is found.
 /tmp/test3.mp4: Invalid data found when processing input
 }}}

 VLC, mpv and ffmpeg are all unable to read the file, despite all being
 able to play the stream live without problem. However, if one outputs to a
 TS file, the output is entirely usable, and can afterwards be remuxed to
 mp4 without issue.

 The issue seems identical to this mailing list post from 2017, which
 unfortunately had no followup: https://ffmpeg.org/pipermail/libav-
 user/2017-November/010762.html.

 How to reproduce:
 {{{
 % ffmpeg -i rtsp://user:pass@192.168.1.64/Streaming/Channels/1 -c copy
 /tmp/test3.mp4
 ffmpeg version 4.1.3-4154f89 Copyright (c) 2000-2019 the FFmpeg developers
   built with gcc 9 (GCC)
   configuration: --prefix=/usr --bindir=/usr/bin
 --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg
 --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man
 --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security
 -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
 protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-
 hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64
 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-
 protection' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now
 -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' --enable-bzlib --enable-
 libdrm --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-
 gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray
 --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-
 libfribidi --enable-libgsm --enable-libmp3lame --enable-libkvazaar
 --enable-nvenc --extra-cflags=-I/usr/include/nvenc --enable-openal
 --enable-opencl --enable-libopenh264 --enable-libmysofa --enable-libshine
 --enable-libzvbi --enable-libvidstab --enable-libvmaf --enable-version3
 --enable-libaom --enable-opengl --enable-libopenjpeg --enable-libopus
 --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libtheora
 --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264
 --enable-libx265 --enable-libxvid --enable-avfilter --enable-avresample
 --enable-postproc --enable-pthreads --disable-static --enable-shared
 --enable-gpl --disable-debug --enable-decoder=libdav1d --disable-stripping
 --shlibdir=/usr/lib64 --enable-runtime-cpudetect
   libavutil      56. 22.100 / 56. 22.100
   libavcodec     58. 35.100 / 58. 35.100
   libavformat    58. 20.100 / 58. 20.100
   libavdevice    58.  5.100 / 58.  5.100
   libavfilter     7. 40.101 /  7. 40.101
   libavresample   4.  0.  0 /  4.  0.  0
   libswscale      5.  3.100 /  5.  3.100
   libswresample   3.  3.100 /  3.  3.100
   libpostproc    55.  3.100 / 55.  3.100
 [hevc @ 0x5602f1ee0f80] VPS 0 does not exist
     Last message repeated 1 times
 Input #0, rtsp, from 'rtsp://user:pass@192.168.1.64/Streaming/Channels/1':
   Metadata:
     title           : Media Presentation
   Duration: N/A, start: 0.040000, bitrate: N/A
     Stream #0:0: Video: hevc (Main), yuv420p(tv), 2560x1440, 50 fps, 25
 tbr, 90k tbn, 50 tbc
 Output #0, mp4, to '/tmp/test3.mp4':
   Metadata:
     title           : Media Presentation
     encoder         : Lavf58.20.100
     Stream #0:0: Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv),
 2560x1440, q=2-31, 50 fps, 25 tbr, 90k tbn, 90k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 [mp4 @ 0x5602f1f14600] Timestamps are unset in a packet for stream 0. This
 is deprecated and will stop working in the future. Fix your code to set
 the timestamps properly
 [mp4 @ 0x5602f1f14600] Non-monotonous DTS in output stream 0:0; previous:
 0, current: 0; changing to 1. This may result in incorrect timestamps in
 the output file.
 frame=  167 fps= 29 q=-1.0 Lsize=   11434kB time=00:00:06.60
 bitrate=14191.4kbits/s speed=1.14x
 video:11432kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.015932%
 Exiting normally, received signal 2.

 % ffprobe /tmp/test3.mp4
 ffprobe version 4.1.3-4154f89 Copyright (c) 2007-2019 the FFmpeg
 developers
   built with gcc 9 (GCC)
   configuration: --prefix=/usr --bindir=/usr/bin
 --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg
 --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man
 --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security
 -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-
 protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-
 hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64
 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-
 protection' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now
 -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' --enable-bzlib --enable-
 libdrm --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-
 gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray
 --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-
 libfribidi --enable-libgsm --enable-libmp3lame --enable-libkvazaar
 --enable-nvenc --extra-cflags=-I/usr/include/nvenc --enable-openal
 --enable-opencl --enable-libopenh264 --enable-libmysofa --enable-libshine
 --enable-libzvbi --enable-libvidstab --enable-libvmaf --enable-version3
 --enable-libaom --enable-opengl --enable-libopenjpeg --enable-libopus
 --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libtheora
 --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264
 --enable-libx265 --enable-libxvid --enable-avfilter --enable-avresample
 --enable-postproc --enable-pthreads --disable-static --enable-shared
 --enable-gpl --disable-debug --enable-decoder=libdav1d --disable-stripping
 --shlibdir=/usr/lib64 --enable-runtime-cpudetect
   libavutil      56. 22.100 / 56. 22.100
   libavcodec     58. 35.100 / 58. 35.100
   libavformat    58. 20.100 / 58. 20.100
   libavdevice    58.  5.100 / 58.  5.100
   libavfilter     7. 40.101 /  7. 40.101
   libavresample   4.  0.  0 /  4.  0.  0
   libswscale      5.  3.100 /  5.  3.100
   libswresample   3.  3.100 /  3.  3.100
   libpostproc    55.  3.100 / 55.  3.100
 [AVBSFContext @ 0x55f87e9a1f00] No start code is found.
 /tmp/test3.mp4: Invalid data found when processing input
 }}}


 Test with 4.1.3, as well as bb11584924d6190a9028cbb319891028f44856a9.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7974>
FFmpeg <https://ffmpeg.org>
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