#9732: The mov demuxer does not correctly read the `cprt` box
------------------------------------+--------------------------------------
Reporter: Xiaolei Yu | Type: defect
Status: new | Priority: normal
Component: avformat | Version: git-master
Keywords: cprt mp4 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
The mov demuxer does not correctly read the `cprt` box specified in
ISO/IEC 14496-12.
Metadata boxes specified in 3GPP use the same layout and are also handled
incorrectly.
How to reproduce:
Use the following command to generate a 3gp file
{{{
% ffmpeg -f lavfi -f color -frames:v 1 -c:v libx264 -metadata
copyright=abcdefg out.3gp
}}}
{{{
% ffmpeg -i out.3gp
}}}
produces:
{{{
ffmpeg version N-106627-g61d0b1d21f Copyright (c) 2000-2022 the FFmpeg
developers
built with gcc 11 (Debian 11.2.0-18)
configuration: --cc=/usr/lib/ccache/gcc --enable-gpl --enable-libx264
libavutil 57. 24.101 / 57. 24.101
libavcodec 59. 26.100 / 59. 26.100
libavformat 59. 22.100 / 59. 22.100
libavdevice 59. 6.100 / 59. 6.100
libavfilter 8. 33.100 / 8. 33.100
libswscale 6. 6.100 / 6. 6.100
libswresample 4. 6.100 / 4. 6.100
libpostproc 56. 5.100 / 56. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.3gp':
Metadata:
major_brand : 3gp6
minor_version : 256
compatible_brands: 3gp6isomiso2avc1
copyright :
copyright-eng :
Duration: 00:00:00.04, start: 0.000000, bitrate: 300 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(progressive), 320x240 [SAR 1:1 DAR 4:3], 150 kb/s, 25 fps, 25 tbr,
12800 tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9732>
FFmpeg <https://ffmpeg.org>
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