#6609: SamplingRateBox should be used if the value is greater than INT16_MAX
-------------------------------------+-------------------------------------
Reporter: fbeaufort | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version:
Keywords: flac, | unspecified
isobmff, mp4 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
SamplingRateBox should be used if the value is greater than INT16_MAX
How to reproduce:
1. Grab file from https://storage.googleapis.com/media-session/bear-
1280x720.mp4
2. Run ffmpeg command below
{{{
% ffmpeg -i bear-1280x720.mp4 -map 0:0 -acodec flac -strict -2 -ar 192000
bear-flac-192kHz.mp4
}}}
3. The `bear-flac-192kHz.mp4` file should have a valid sample rate, not 0.
Here are some #ffmpeg logs for some context:
{{{
12:58:08 PM <jya> you can create a bug that the SamplingRateBox (as per
ISO 14496-2 12.2.3.2) is to be used if the value is greater than INT16_MAX
12:59:14 PM <jya> they have provision for that inthe SoundDescription V2,
but i can't find this anywhere in the spec
12:59:20 PM <jya> must be a QT thing
1:00:14 PM <jya> and if they properly create a SamplingRateBox, need to
file a bug in Firefox that our mp4 demuxer doesn't support it :)
}}}
And here's the ffmpeg version:
{{{
% ffmpeg -version
ffmpeg version 3.3.3-static http://johnvansickle.com/ffmpeg/ Copyright
(c) 2000-2017 the FFmpeg developers
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6609>
FFmpeg <https://ffmpeg.org>
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