New submission from Jakub Olexa <[email protected]>:
every once in a while the SONY handycam cameras produce a mpeg2 file that ffmpeg
fails to identify and therefor transcode. this happens rarelly (1:500) and it
was always one file of many shot that day, with no changes to cam settings, etc.
uploading sample to incoming/failing_mpeg2_sample.mpg
here is the output when trying to transcode such file:
FFmpeg version SVN-r23540, Copyright (c) 2000-2010 the FFmpeg developers
built on Jun 9 2010 00:59:44 with gcc 4.4.4
configuration: --enable-libmp3lame --enable-libtheora --enable-libx264
--enable-libgsm --enable-postproc --enable-libxvid --enable-libfaac
--enable-pthreads --enable-libvorbis --enable-libfaad --enable-gpl
--enable-x11grab --enable-nonfree
libavutil 50.18. 0 / 50.18. 0
libavcodec 52.75. 1 / 52.75. 1
libavformat 52.68. 0 / 52.68. 0
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.20. 0 / 1.20. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
Marker bit missing before time_increment
[mpeg4 @ 0x3183780]hmm, seems the headers are not complete, trying to guess
time_increment_bits
[mpeg4 @ 0x3183780]my guess is 16 bits ;)
Marker bit missing before vop_coded
Marker bit missing before time_increment
[mpeg4 @ 0x3183780]hmm, seems the headers are not complete, trying to guess
time_increment_bits
[mpeg4 @ 0x3183780]my guess is 16 bits ;)
Marker bit missing before vop_coded
Marker bit missing before time_increment_resolution
Marker bit missing before fixed_vop_rate
[mpeg4 @ 0x3183780]Static Sprites not supported
[mpeg4 @ 0x3183780]63 sprite_warping_points
Marker bit missing before time_increment_resolution
Marker bit missing before fixed_vop_rate
[mpeg4 @ 0x3183780]Static Sprites not supported
[mpeg4 @ 0x3183780]63 sprite_warping_points
[mpeg4 @ 0x3183780]header damaged
[mpeg4 @ 0x3183780]illegal chroma format
[mpeg4 @ 0x3183780]only rectangular vol supported
Marker bit missing before time_increment_resolution
Marker bit missing before fixed_vop_rate
[mpeg4 @ 0x3183780]Static Sprites not supported
[mpeg4 @ 0x3183780]35 sprite_warping_points
[mpeg4 @ 0x3183780]illegal chroma format
[mpeg4 @ 0x3183780]only rectangular vol supported
Marker bit missing before time_increment_resolution
Marker bit missing before fixed_vop_rate
[mpeg4 @ 0x3183780]Static Sprites not supported
[mpeg4 @ 0x3183780]35 sprite_warping_points
[mpeg4 @ 0x3183780]header damaged
[m4v @ 0x31824b0]Estimating duration from bitrate, this may be inaccurate
Seems stream 0 codec frame rate differs from container frame rate: 1238.00
(1238/1) -> 25.00 (25/1)
Input #0, m4v, from '/mnt/avid_media/_in/tuna//failing_mpeg2_sample.MPG':
Duration: N/A, bitrate: N/A
Stream #0.0: Video: mpeg4, yuv420p, 25 tbr, 1200k tbn, 1238 tbc
Output #1, wav, to '/tmp/failing_mpeg2_sample.wav':
Output file #1 does not contain any stream
----------
messages: 12373
priority: normal
status: new
substatus: new
title: MPEG2 decoding
type: bug
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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2326>
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