#601: ffmpeg / libx264 produces invalid MP4 file
-------------------------------------+-------------------------------------
Reporter: shifter1 | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Description changed by cehoyos:
Old description:
> FFmpeg or libx264 or some combination of the two produces an invalid mp4
> that will crash ffprobe / probably others (VLC crashes on the file as
> well).
>
> The source is a number of PNG images and the output is a 2 pass encoded
> libx264 coded video.
>
> Here is the command line I used:
> carl@af:~/fractal$ ffmpeg -r 30 -i fracs/fractal%05d.png -vcodec libx264
> -b:v 4096k -t 60 -threads 0 -pass 1 preview.mp4
> ffmpeg version N-33758-gc4e02d3, Copyright (c) 2000-2011 the FFmpeg
> developers
> built on Oct 18 2011 03:55:48 with gcc 4.4.3
> configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
> nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
> libvorbis --
> enable-libfaac --enable-libtheora --enable-libvpx
> libavutil 51. 21. 0 / 51. 21. 0
> libavcodec 53. 21. 0 / 53. 21. 0
> libavformat 53. 16. 1 / 53. 16. 1
> libavdevice 53. 4. 0 / 53. 4. 0
> libavfilter 2. 43. 7 / 2. 43. 7
> libswscale 2. 1. 0 / 2. 1. 0
> libpostproc 51. 2. 0 / 51. 2. 0
> Input #0, image2, from 'fracs/fractal%05d.png':
> Duration: 00:05:19.00, start: 0.000000, bitrate: N/A
> Stream #0:0: Video: png, rgb24, 1440x900, 30 fps, 30 tbr, 30 tbn, 30
> tbc
> File 'preview.mp4' already exists. Overwrite ? [y/N] y
> w:1440 h:900 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:
> [libx264 @ 0x9121a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
> [libx264 @ 0x9121a80] profile High 4:4:4 Predictive, level 4.0, 4:4:4
> 8-bit
> [libx264 @ 0x9121a80] 264 - core 118 r2085 8a62835 - H.264/MPEG-4 AVC
> codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options:
> cabac=1 ref=
> 1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00
> mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0
> deadzone=21,11 fast_pskip=1
> chroma_qp_offset=0 threads=3 sliced_threads=0 nr=0 decimate=1
> interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
> b_adapt=1 b_bias=0 dir
> ect=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
> intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=4096 ratetol=1.0
> qcomp=0.6
> 0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
> Output #0, mp4, to 'preview.mp4':
> Metadata:
> encoder : Lavf53.16.1
> Stream #0:0: Video: h264 (![0][0][0] / 0x0021), rgb24, 1440x900, q=-1
> --1, pass 1, 4096 kb/s, 30 tbn, 30 tbc
> Stream mapping:
> Stream #0.0 -> #0.0 (png -> libx264)
> Press [q] to stop, [?] for help
> frame= 1800 fps= 15 q=-1.0 Lsize= 35021kB time=00:00:59.93
> bitrate=4786.9kbits/s
> video:34994kB audio:0kB global headers:0kB muxing overhead 0.076605%
>
> ======================================================
> For the second pass:
>
> carl@af:~/fractal$ ffmpeg -r 30 -i fracs/fractal%05d.png -i Midnight.mp3
> -vcodec libx264 -b:v 4096k -acodec libfaac -ab 160k -t 60 -threads 0
> -pass 2 preview.mp4
> ffmpeg version N-33758-gc4e02d3, Copyright (c) 2000-2011 the FFmpeg
> developers
> built on Oct 18 2011 03:55:48 with gcc 4.4.3
> configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
> nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
> libvorbis --enable-libfaac --enable-libtheora --enable-libvpx
> libavutil 51. 21. 0 / 51. 21. 0
> libavcodec 53. 21. 0 / 53. 21. 0
> libavformat 53. 16. 1 / 53. 16. 1
> libavdevice 53. 4. 0 / 53. 4. 0
> libavfilter 2. 43. 7 / 2. 43. 7
> libswscale 2. 1. 0 / 2. 1. 0
> libpostproc 51. 2. 0 / 51. 2. 0
> Input #0, image2, from 'fracs/fractal%05d.png':
> Duration: 00:05:19.00, start: 0.000000, bitrate: N/A
> Stream #0:0: Video: png, rgb24, 1440x900, 30 fps, 30 tbr, 30 tbn, 30
> tbc
> [mp3 @ 0x9dd0780] max_analyze_duration 5000000 reached at 5015510
> [mp3 @ 0x9dd0780] Estimating duration from bitrate, this may be
> inaccurate
> Input #1, mp3, from 'Midnight.mp3':
> Metadata:
> title : {Midnight} (ID: 60919)
> album : Newgrounds Audio Portal
> track : 01/01
> artist : cornandbeans
> Duration: 00:05:18.88, start: 0.000000, bitrate: 95 kb/s
> Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16, 96 kb/s
> File 'preview.mp4' already exists. Overwrite ? [y/N] y
> w:1440 h:900 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:
> [libx264 @ 0x9de7060] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
> [libx264 @ 0x9de7060] profile High 4:4:4 Predictive, level 4.0, 4:4:4
> 8-bit
> [libx264 @ 0x9de7060] 264 - core 118 r2085 8a62835 - H.264/MPEG-4 AVC
> codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options:
> cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
> psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
> cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3
> sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
> constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1
> weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
> intra_refresh=0 rc_lookahead=40 rc=2pass mbtree=1 bitrate=4096
> ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5
> ip_ratio=1.40 aq=1:1.00
> Output #0, mp4, to 'preview.mp4':
> Metadata:
> encoder : Lavf53.16.1
> Stream #0:0: Video: h264 (![0][0][0] / 0x0021), rgb24, 1440x900, q=-1
> --1, pass 2, 4096 kb/s, 30 tbn, 30 tbc
> Stream #0:1: Audio: aac (@[0][0][0] / 0x0040), 44100 Hz, stereo, s16,
> 160 kb/s
> Stream mapping:
> Stream #0.0 -> #0.0 (png -> libx264)
> Stream #1.0 -> #0.1 (mp3 -> libfaac)
> Press [q] to stop, [?] for help
> frame= 1800 fps= 9 q=-1.0 Lsize= 30945kB time=00:00:59.93
> bitrate=4229.7kbits/s
> video:29784kB audio:1114kB global headers:0kB muxing overhead 0.153548%
>
>
> ===================================================
> Finally, trying to probe:
>
> carl@af:~/fractal$ ffprobe preview.mp4
> ffprobe version N-33758-gc4e02d3, Copyright (c) 2007-2011 the FFmpeg
> developers
> built on Oct 18 2011 03:55:48 with gcc 4.4.3
> configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
> nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
> libvorbis --enable-libfaac --enable-libtheora --enable-libvpx
> libavutil 51. 21. 0 / 51. 21. 0
> libavcodec 53. 21. 0 / 53. 21. 0
> libavformat 53. 16. 1 / 53. 16. 1
> libavdevice 53. 4. 0 / 53. 4. 0
> libavfilter 2. 43. 7 / 2. 43. 7
> libswscale 2. 1. 0 / 2. 1. 0
> libpostproc 51. 2. 0 / 51. 2. 0
> *** glibc detected *** ffprobe: free(): invalid pointer: 0xb605f020 ***
> ======= Backtrace: =========
> /lib/tls/i686/cmov/libc.so.6(+0x6b591)[0xb6855591]
> /lib/tls/i686/cmov/libc.so.6(+0x6cde8)[0xb6856de8]
> /lib/tls/i686/cmov/libc.so.6(cfree+0x6d)[0xb6859ecd]
> /usr/local/lib/libavutil.so.51(av_freep+0x12)[0xb6992ef2]
> ======= Memory map: ========
> 08048000-08051000 r-xp 00000000 08:02 2496305 /usr/local/bin/ffprobe
> 08051000-08052000 r--p 00009000 08:02 2496305 /usr/local/bin/ffprobe
> 08052000-08053000 rw-p 0000a000 08:02 2496305 /usr/local/bin/ffprobe
> 08976000-08a62000 rw-p 00000000 00:00 0 [heap]
>
> ...
>
> There is lots more, and I can include the video source and output files.
> They are fairly large though.
New description:
FFmpeg or libx264 or some combination of the two produces an invalid mp4
that will crash ffprobe / probably others (VLC crashes on the file as
well).
The source is a number of PNG images and the output is a 2 pass encoded
libx264 coded video.
Here is the command line I used:
{{{
carl@af:~/fractal$ ffmpeg -r 30 -i fracs/fractal%05d.png -vcodec libx264
-b:v 4096k -t 60 -threads 0 -pass 1 preview.mp4
ffmpeg version N-33758-gc4e02d3, Copyright (c) 2000-2011 the FFmpeg
developers
built on Oct 18 2011 03:55:48 with gcc 4.4.3
configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
libvorbis --
enable-libfaac --enable-libtheora --enable-libvpx
libavutil 51. 21. 0 / 51. 21. 0
libavcodec 53. 21. 0 / 53. 21. 0
libavformat 53. 16. 1 / 53. 16. 1
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 43. 7 / 2. 43. 7
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, image2, from 'fracs/fractal%05d.png':
Duration: 00:05:19.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 1440x900, 30 fps, 30 tbr, 30 tbn, 30
tbc
File 'preview.mp4' already exists. Overwrite ? [y/N] y
w:1440 h:900 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:
[libx264 @ 0x9121a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
[libx264 @ 0x9121a80] profile High 4:4:4 Predictive, level 4.0, 4:4:4
8-bit
[libx264 @ 0x9121a80] 264 - core 118 r2085 8a62835 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options:
cabac=1 ref=
1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00
mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0
deadzone=21,11 fast_pskip=1
chroma_qp_offset=0 threads=3 sliced_threads=0 nr=0 decimate=1
interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
b_adapt=1 b_bias=0 dir
ect=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=4096 ratetol=1.0
qcomp=0.6
0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'preview.mp4':
Metadata:
encoder : Lavf53.16.1
Stream #0:0: Video: h264 (![0][0][0] / 0x0021), rgb24, 1440x900, q=-1
--1, pass 1, 4096 kb/s, 30 tbn, 30 tbc
Stream mapping:
Stream #0.0 -> #0.0 (png -> libx264)
Press [q] to stop, [?] for help
frame= 1800 fps= 15 q=-1.0 Lsize= 35021kB time=00:00:59.93
bitrate=4786.9kbits/s
video:34994kB audio:0kB global headers:0kB muxing overhead 0.076605%
}}}
======================================================
For the second pass:
{{{
carl@af:~/fractal$ ffmpeg -r 30 -i fracs/fractal%05d.png -i Midnight.mp3
-vcodec libx264 -b:v 4096k -acodec libfaac -ab 160k -t 60 -threads 0 -pass
2 preview.mp4
ffmpeg version N-33758-gc4e02d3, Copyright (c) 2000-2011 the FFmpeg
developers
built on Oct 18 2011 03:55:48 with gcc 4.4.3
configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
libvorbis --enable-libfaac --enable-libtheora --enable-libvpx
libavutil 51. 21. 0 / 51. 21. 0
libavcodec 53. 21. 0 / 53. 21. 0
libavformat 53. 16. 1 / 53. 16. 1
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 43. 7 / 2. 43. 7
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, image2, from 'fracs/fractal%05d.png':
Duration: 00:05:19.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 1440x900, 30 fps, 30 tbr, 30 tbn, 30
tbc
[mp3 @ 0x9dd0780] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x9dd0780] Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from 'Midnight.mp3':
Metadata:
title : {Midnight} (ID: 60919)
album : Newgrounds Audio Portal
track : 01/01
artist : cornandbeans
Duration: 00:05:18.88, start: 0.000000, bitrate: 95 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16, 96 kb/s
File 'preview.mp4' already exists. Overwrite ? [y/N] y
w:1440 h:900 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:
[libx264 @ 0x9de7060] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
[libx264 @ 0x9de7060] profile High 4:4:4 Predictive, level 4.0, 4:4:4
8-bit
[libx264 @ 0x9de7060] 264 - core 118 r2085 8a62835 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1
weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
intra_refresh=0 rc_lookahead=40 rc=2pass mbtree=1 bitrate=4096 ratetol=1.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40
aq=1:1.00
Output #0, mp4, to 'preview.mp4':
Metadata:
encoder : Lavf53.16.1
Stream #0:0: Video: h264 (![0][0][0] / 0x0021), rgb24, 1440x900, q=-1
--1, pass 2, 4096 kb/s, 30 tbn, 30 tbc
Stream #0:1: Audio: aac (@[0][0][0] / 0x0040), 44100 Hz, stereo, s16,
160 kb/s
Stream mapping:
Stream #0.0 -> #0.0 (png -> libx264)
Stream #1.0 -> #0.1 (mp3 -> libfaac)
Press [q] to stop, [?] for help
frame= 1800 fps= 9 q=-1.0 Lsize= 30945kB time=00:00:59.93
bitrate=4229.7kbits/s
video:29784kB audio:1114kB global headers:0kB muxing overhead 0.153548%
}}}
===================================================
Finally, trying to probe:
{{{
carl@af:~/fractal$ ffprobe preview.mp4
ffprobe version N-33758-gc4e02d3, Copyright (c) 2007-2011 the FFmpeg
developers
built on Oct 18 2011 03:55:48 with gcc 4.4.3
configuration: --enable-librtmp --enable-gpl --enable-shared --enable-
nonfree --enable-pthreads --enable-libx264 --enable-libmp3lame --enable-
libvorbis --enable-libfaac --enable-libtheora --enable-libvpx
libavutil 51. 21. 0 / 51. 21. 0
libavcodec 53. 21. 0 / 53. 21. 0
libavformat 53. 16. 1 / 53. 16. 1
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 43. 7 / 2. 43. 7
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
*** glibc detected *** ffprobe: free(): invalid pointer: 0xb605f020 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(+0x6b591)[0xb6855591]
/lib/tls/i686/cmov/libc.so.6(+0x6cde8)[0xb6856de8]
/lib/tls/i686/cmov/libc.so.6(cfree+0x6d)[0xb6859ecd]
/usr/local/lib/libavutil.so.51(av_freep+0x12)[0xb6992ef2]
======= Memory map: ========
08048000-08051000 r-xp 00000000 08:02 2496305 /usr/local/bin/ffprobe
08051000-08052000 r--p 00009000 08:02 2496305 /usr/local/bin/ffprobe
08052000-08053000 rw-p 0000a000 08:02 2496305 /usr/local/bin/ffprobe
08976000-08a62000 rw-p 00000000 00:00 0 [heap]
...
}}}
There is lots more, and I can include the video source and output files.
They are fairly large though.
--
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/601#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
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