Opened 13 years ago

Closed 13 years ago

#601 closed defect (invalid)

ffmpeg / libx264 produces invalid MP4 file

Reported by: carl Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description (last modified by Carl Eugen Hoyos)

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.

Change History (7)

comment:1 by Carl Eugen Hoyos, 13 years ago

Keywords: ffmpeg libx264 removed

Does the crash also happen if you add -vn or -an to the second encode?
Is two-pass really necessary or can you produce a file that crashes with one pass only?
Does only ffprobe crash or also ffmpeg -i preview.mp4 (or ffmpeg -i preview.mp4 -f null -)?

comment:2 by Carl Eugen Hoyos, 13 years ago

Description: modified (diff)

comment:3 by Carl Eugen Hoyos, 13 years ago

And please upload preview.mp4 to ​http://www.datafilehost.com/ and post the download link here.

in reply to:  1 ; comment:4 by carl, 13 years ago

Replying to cehoyos:

Does the crash also happen if you add -vn or -an to the second encode?
Is two-pass really necessary or can you produce a file that crashes with one pass only?
Does only ffprobe crash or also ffmpeg -i preview.mp4 (or ffmpeg -i preview.mp4 -f null -)?

Yes, it does crash with that command. I have uploaded a single pass version which crashes here: ​http://www.datafilehost.com/download-d595b7f9.html

in reply to:  4 ; comment:5 by Carl Eugen Hoyos, 13 years ago

Replying to shifter1:

I have uploaded a single pass version which crashes here: ​http://www.datafilehost.com/download-d595b7f9.html

Works fine for me (ffplay and mplayer play preview.mp4 as expected), please update to latest git head.
(Note that you are encoding to H264 RGB which is unusual and it is likely that most applications except MPlayer and FFmpeg do not support it. You may of course argue that -pix_fmt yuv420p should be made standard in this case.)

$ md5sum preview.mp4
0ef0a6aee29e893d0928c7ffb3ea3e11  preview.mp4
$ ffmpeg -i preview.mp4 -f null -
ffmpeg version N-34304-gc0dbab9, Copyright (c) 2000-2011 the FFmpeg developers
  built on Oct 31 2011 10:34:46 with gcc 4.5.3
  configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
  libavutil    51. 22. 0 / 51. 22. 0
  libavcodec   53. 26. 0 / 53. 26. 0
  libavformat  53. 18. 0 / 53. 18. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 45. 2 /  2. 45. 2
  libswscale    2.  1. 0 /  2.  1. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'preview.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.16.1
  Duration: 00:00:10.00, start: 0.000000, bitrate: 706 kb/s
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), gbr24p, 1440x900, 702 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    :
[buffer @ 0x138b5e0] w:1440 h:900 pixfmt:gbr24p tb:1/1000000 sar:0/1 sws_param:
Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.18.0
    Stream #0:0(und): Video: rawvideo, gbr24p, 1440x900, q=2-31, 200 kb/s, 90k tbn, 30 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    :
Stream mapping:
  Stream #0.0 -> #0.0 (h264 -> rawvideo)
Press [q] to stop, [?] for help
frame=  300 fps=125 q=0.0 Lsize=      -0kB time=00:00:10.00 bitrate=  -0.0kbits/s
video:0kB audio:0kB global headers:0kB muxing overhead -inf%

in reply to:  5 ; comment:6 by carl, 13 years ago

Replying to cehoyos:

Replying to shifter1:

I have uploaded a single pass version which crashes here: ​http://www.datafilehost.com/download-d595b7f9.html

Works fine for me (ffplay and mplayer play preview.mp4 as expected), please update to latest git head.
(Note that you are encoding to H264 RGB which is unusual and it is likely that most applications except MPlayer and FFmpeg do not support it. You may of course argue that -pix_fmt yuv420p should be made standard in this case.)

$ md5sum preview.mp4
0ef0a6aee29e893d0928c7ffb3ea3e11  preview.mp4
$ ffmpeg -i preview.mp4 -f null -
ffmpeg version N-34304-gc0dbab9, Copyright (c) 2000-2011 the FFmpeg developers
  built on Oct 31 2011 10:34:46 with gcc 4.5.3
  configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
  libavutil    51. 22. 0 / 51. 22. 0
  libavcodec   53. 26. 0 / 53. 26. 0
  libavformat  53. 18. 0 / 53. 18. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 45. 2 /  2. 45. 2
  libswscale    2.  1. 0 /  2.  1. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'preview.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.16.1
  Duration: 00:00:10.00, start: 0.000000, bitrate: 706 kb/s
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), gbr24p, 1440x900, 702 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    :
[buffer @ 0x138b5e0] w:1440 h:900 pixfmt:gbr24p tb:1/1000000 sar:0/1 sws_param:
Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.18.0
    Stream #0:0(und): Video: rawvideo, gbr24p, 1440x900, q=2-31, 200 kb/s, 90k tbn, 30 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    :
Stream mapping:
  Stream #0.0 -> #0.0 (h264 -> rawvideo)
Press [q] to stop, [?] for help
frame=  300 fps=125 q=0.0 Lsize=      -0kB time=00:00:10.00 bitrate=  -0.0kbits/s
video:0kB audio:0kB global headers:0kB muxing overhead -inf%

Just pulled and recompiled. The error goes away in ff*, but persists in VLC. Oh well, I guess you can't have everything. Thanks for the help.

in reply to:  6 comment:7 by Carl Eugen Hoyos, 13 years ago

Resolution: → invalid
Status: new → closed

Replying to shifter1:

Replying to cehoyos:

Replying to shifter1:

Works fine for me (ffplay and mplayer play preview.mp4 as expected), please update to latest git head.
(Note that you are encoding to H264 RGB which is unusual and it is likely that most applications except MPlayer and FFmpeg do not support it. You may of course argue that -pix_fmt yuv420p should be made standard in this case.)

Just pulled and recompiled. The error goes away in ff*, but persists in VLC. Oh well, I guess you can't have everything.

I suspect you want to add -pix_fmt yuv420p to your command line to get a file every application can play.

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