[FFmpeg-trac] #11028(undetermined:new): Audio of damaged MP4 suddenly stops playing

[FFmpeg]

#11028: Audio of damaged MP4 suddenly stops playing
-------------------------------------+-------------------------------------
             Reporter:  PumaD        |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by PumaD:

Old description:

> Follow-up to #11005
>
> Got a slightly damaged 1.9 GiB MP4 file. When playing with ffplay (or any
> ffmpeg based player like mpv) the audio suddenly stops playing at
> 00:43:05.
>
> Remuxing the file with mkvtoolnix resolves this problem.
> (https://gitlab.com/mbunkus/mkvtoolnix; `mkvmerge --output out.mkv
> slightly-damaged-audio-stops-at-00-43-05.mp4`)
>
> Remuxing with ffmpeg instead does not.
> (`ffmpeg -i slightly-damaged-audio-stops-at-00-43-05.mp4 -c copy
> out.mkv`)
>
> Sorry for the large "sample". I didn't manage to extract data from the
> middle without breaking the file completely or baking the problem into
> the sample.
> https://streams.videolan.org/ffmpeg/incoming/11028/slightly-damaged-
> audio-stops-at-00-43-05.mp4
>
> Note: NSFW
>

> How to reproduce:
> {{{
> $ ffplay -ss 00:43:00 slightly-damaged-audio-stops-at-00-43-05.mp4
> ffplay version N-115363-g3146b77a7d Copyright (c) 2003-2024 the FFmpeg
> developers
>   built with gcc 14.1.1 (GCC) 20240507
>   configuration:
>   libavutil      59. 19.100 / 59. 19.100
>   libavcodec     61.  5.104 / 61.  5.104
>   libavformat    61.  3.103 / 61.  3.103
>   libavdevice    61.  2.100 / 61.  2.100
>   libavfilter    10.  2.102 / 10.  2.102
>   libswscale      8.  2.100 /  8.  2.100
>   libswresample   5.  2.100 /  5.  2.100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x726024000c80] Sample size 3043950162 is too
> large
> [h264 @ 0x726024001c00] concealing 1691 DC, 1691 AC, 1691 MV errors in I
> frame
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'slightly-damaged-audio-stops-
> at-00-43-05.mp4':
>   Metadata:
>     major_brand     : isom
>     minor_version   : 512
>     compatible_brands: isomiso2avc1mp41
>     encoder         : Lavf57.62.100
>   Duration: 01:28:36.03, start: 0.000000, bitrate: 1577 kb/s
>   Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661),
> yuv420p(progressive), 960x720 [SAR 1:1 DAR 4:3], 3028 kb/s, 29.93 fps, 30
> tbr, 90k tbn (default)
>       Metadata:
>         handler_name    : VideoHandler
>         vendor_id       : [0][0][0][0]
>   Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
> stereo, fltp, 93 kb/s (default)
>       Metadata:
>         handler_name    : SoundHandler
>         vendor_id       : [0][0][0][0]
> [h264 @ 0x72602455e800] concealing 1127 DC, 1127 AC, 1127 MV errors in P
> frame
> 2589.48 A-V: -0.008 fd=   0 aq=    0KB vq=15360KB sq=    0B
> }}}

New description:

 Follow-up to #11005

 Got a slightly damaged 1.9 GiB MP4 file. When playing with ffplay (or any
 ffmpeg based player like mpv) the audio suddenly stops playing at
 00:43:05.

 Remuxing the file with mkvtoolnix resolves this problem.
 (https://gitlab.com/mbunkus/mkvtoolnix; `mkvmerge --output out.mkv
 slightly-damaged-audio-stops-at-00-43-05.mp4`)

 Remuxing with ffmpeg instead does not.
 (`ffmpeg -i slightly-damaged-audio-stops-at-00-43-05.mp4 -c copy out.mkv`)

 Sorry for the large "sample". I didn't manage to extract data from the
 middle without breaking the file completely or baking the problem into the
 sample.
 https://streams.videolan.org/ffmpeg/incoming/11028/slightly-damaged-audio-
 stops-at-00-43-05.mp4 (~ 1 GiB)

 Note: NSFW


 How to reproduce:
 {{{
 $ ffplay -ss 00:43:00 slightly-damaged-audio-stops-at-00-43-05.mp4
 ffplay version N-115363-g3146b77a7d Copyright (c) 2003-2024 the FFmpeg
 developers
   built with gcc 14.1.1 (GCC) 20240507
   configuration:
   libavutil      59. 19.100 / 59. 19.100
   libavcodec     61.  5.104 / 61.  5.104
   libavformat    61.  3.103 / 61.  3.103
   libavdevice    61.  2.100 / 61.  2.100
   libavfilter    10.  2.102 / 10.  2.102
   libswscale      8.  2.100 /  8.  2.100
   libswresample   5.  2.100 /  5.  2.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x726024000c80] Sample size 3043950162 is too
 large
 [h264 @ 0x726024001c00] concealing 1691 DC, 1691 AC, 1691 MV errors in I
 frame
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'slightly-damaged-audio-stops-
 at-00-43-05.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.62.100
   Duration: 01:28:36.03, start: 0.000000, bitrate: 1577 kb/s
   Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661),
 yuv420p(progressive), 960x720 [SAR 1:1 DAR 4:3], 3028 kb/s, 29.93 fps, 30
 tbr, 90k tbn (default)
       Metadata:
         handler_name    : VideoHandler
         vendor_id       : [0][0][0][0]
   Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 93 kb/s (default)
       Metadata:
         handler_name    : SoundHandler
         vendor_id       : [0][0][0][0]
 [h264 @ 0x72602455e800] concealing 1127 DC, 1127 AC, 1127 MV errors in P
 frame
 2589.48 A-V: -0.008 fd=   0 aq=    0KB vq=15360KB sq=    0B
 }}}

--
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11028#comment:2>
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