Option to ignore defect frames

[Alex]

Steps that will reproduce the problem?

1. Find a defect file
2. Convert it: ffmpeg -i file.mkv -vcodec copy test.m4v

What is the expected result?
ffmpeg should skip (e.g. define a parameter first) defect frames.

What happens instead?
Encoding stops.

Possible workaround:
Maybe creating multiple output files using the "ss" parameter and merging them later.

Any additional information:

...
Stream mapping:
  Stream #0.0 -> #0.0 (copy)
Press ctrl-c to stop encoding
[matroska,webm @ 0x7fbcbb005800] Unknown entry 0x1ED83ED9itrate=15336.6kbits/s    
[matroska,webm @ 0x7fbcbb005800] Unknown entry 0xB8
[matroska,webm @ 0x7fbcbb005800] Unknown entry 0xB6
frame=26108 fps=139 q=-1.0 Lsize= 2039092kB time=1088.84 bitrate=15341.3kbits/s    
video:2038598kB audio:0kB global headers:0kB muxing overhead 0.024223%
$

[Carl Eugen Hoyos]

Complete, uncut output of latest FFmpeg git head missing.

[Alex]

Sure, sorry:

$ /usr/local/bin/ffmpeg -y -i test.mkv -vcodec copy test.m4v 
ffmpeg version git-2011-09-16-41215fd, Copyright (c) 2000-2011 the FFmpeg developers
  built on Sep 16 2011 08:10:56 with clang 2.1 (tags/Apple/clang-163.7.1)
  configuration: --enable-libfaac --enable-libx264 --enable-gpl --enable-nonfree --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libxvid --cc=clang
  libavutil    51. 16. 0 / 51. 16. 0
  libavcodec   53. 15. 0 / 53. 15. 0
  libavformat  53. 12. 0 / 53. 12. 0
  libavdevice  53.  3. 0 / 53.  3. 0
  libavfilter   2. 42. 0 /  2. 42. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (5000000/104271) -> 23.98 (24000/1001)
Input #0, matroska,webm, from 'test.mkv':
  Duration: 01:36:13.37, start: 0.000000, bitrate: 17585 kb/s
    Stream #0.0(eng): Video: h264 (High), yuv420p, 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #0.1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), s16, 1536 kb/s (default)
    Metadata:
      title           : Englisch
    Stream #0.2(ger): Audio: dts (DTS), 48000 Hz, 5.1(side), s16, 1536 kb/s
    Metadata:
      title           : German
    Stream #0.3(eng): Subtitle: text (default)
    Metadata:
      title           : Englisch
Output #0, ipod, to 'test.m4v':
  Metadata:
    encoder         : Lavf53.12.0
    Stream #0.0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2500k tbn, 23.98 tbc (default)
    Stream #0.1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1(side), s16, 128 kb/s (default)
    Metadata:
      title           : Englisch
Stream mapping:
  Stream #0.0 -> #0.0 (copy)
  Stream #0.1 -> #0.1 (dca -> libfaac)
Press [q] to stop, [?] for help
[matroska,webm @ 0x7fc6b903d800] Unknown entry 0x1ED83ED912 bitrate=15528.9kbits/s    
[matroska,webm @ 0x7fc6b903d800] Unknown entry 0xB8
[matroska,webm @ 0x7fc6b903d800] Unknown entry 0xB6
frame=26108 fps=157 q=-1.0 Lsize= 2065095kB time=00:18:08.83 bitrate=15537.0kbits/s    
video:2038598kB audio:25604kB global headers:0kB muxing overhead 0.043263%
$

[Carl Eugen Hoyos]

Please make test.mkv available.

[Alex]

Sure - but unfortunately its size is 12 GB and the command "ffmpeg -ss 100 -t 5 -i test.mkv -vcodec copy -acodec copy -map 0:0 test-small.mkv" results in

[matroska @ 0x7ff5d285bc00] pts < dts in stream 0
av_interleaved_write_frame(): Invalid argument".

[Carl Eugen Hoyos]

Please consider reading ​http://ffmpeg.org/bugreports.html ("If the sample file is too large")

[Carl Eugen Hoyos]

This is impossible to fix without a sample, please reopen if a sample is available.