[FFmpeg-devel] [PATCH] Properly store sampling rate for FLAC in mp4

Jean-Yves Avenard jyavenard at gmail.com
Wed Oct 25 17:52:07 EEST 2017


On 26 August 2017 at 12:08, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 2017-08-25 13:25 GMT+02:00 Jean-Yves Avenard <jyavenard at gmail.com>:
>> +            if (track->par->codec_id == AV_CODEC_ID_FLAC) {
> Why does this only apply to flac?

Sorry, I had missed your reply.

The specification on how sampling rate is to be stored should it be
greater than INT16_MAX is a FLAC in ISOBMFF requirement:


It definitely could be applied to other codecs, but I haven't seen
such requirements clearly defined.

ISOBMFF only defines that AudioSampleEntryV1 should be used instead,
in which case the sampling_rate is a 32 bits integer (ISO 14496-12


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