[FFmpeg-trac] #8876(avformat:new): Invalid data found when processing input, but video is playable

[FFmpeg]

#8876: Invalid data found when processing input, but video is playable
------------------------------------+------------------------------------
             Reporter:  rotem       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mov         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by cehoyos):

 * keywords:  mp4 => mov
 * version:  4.2 => git-master
 * component:  undetermined => avformat
 * reproduced:  0 => 1


Comment:

 {{{
 $ ffmpeg -i IMG_0029.mp4 -qscale 2 out.avi
 ffmpeg version N-98962-g0271098e6c Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 9 (SUSE Linux)
   configuration: --enable-gpl --enable-gnutls --enable-libmp3lame
 --enable-libx264 --enable-libx265 --enable-libdav1d --enable-libvpx
 --enable-libopus --enable-libxml2 --enable-libwebp --enable-librav1e
 --enable-libfreetype --enable-libass
   libavutil      56. 58.100 / 56. 58.100
   libavcodec     58.101.101 / 58.101.101
   libavformat    58. 51.101 / 58. 51.101
   libavdevice    58. 11.101 / 58. 11.101
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x3a0c580] Detected moov in a free or hoov
 atom.
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x3a0c580] Found duplicated MOOV Atom. Skipped
 it
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0029.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1iso6mp41
     encoder         : Lavf56.40.101
   Duration: 00:00:05.38, start: 0.000000, bitrate: 33566 kb/s
     Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 854x480 [SAR 812:813 DAR 86681:48780], 1182 kb/s, SAR 30046:30083 DAR
 247:139, 30 fps, 30 tbr, 12k tbn, 60 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 130 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Please use -q:a or -q:v, -qscale is ambiguous
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
   Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
 Press [q] to stop, [?] for help
 [mpeg4 @ 0x3a3a780] Invalid pixel aspect ratio 30046/30083, limit is
 255/255 reducing
 Output #0, avi, to 'out.avi':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1iso6mp41
     ISFT            : Lavf58.51.101
     Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46),
 yuv420p(progressive), 854x480 [SAR 1:1 DAR 427:240], q=2-31, 200 kb/s, SAR
 30046:30083 DAR 247:139, 30 fps, 30 tbn, 30 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.101.101 mpeg4
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
     Stream #0:1(und): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 48000
 Hz, stereo, fltp (default)
     Metadata:
       handler_name    : SoundHandler
       encoder         : Lavc58.101.101 libmp3lame
 frame=  161 fps=0.0 q=2.0 Lsize=    2982kB time=00:00:05.37
 bitrate=4544.2kbits/s speed=15.1x
 video:2879kB audio:84kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.638195%
 }}}
 The sample plays for more than two minutes with MPlayer and WMP.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8876#comment:8>
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