On Thu, 29 Feb 2024, Andreas Rheinhardt wrote:
Marton Balint:
The wav demuxer by default tried to demux 4096-byte packets which caused
packets with very few number of samples for files with high channel count.
This caused a significant overhead especially since the latest ffmpeg.c
threading changes.
So let's use a similar approach for selecting audio frame size which is already
used in the PCM demuxer, which is to read 25 times per second but at most 1024
samples.
1024 samples seems to be quite small, in particular for files with few
channels (like stereo).
1024 is kind of a historical default. Also having multiples of 1024 is
beneficial for some codecs which encode this many samples per frame.
In any case, I am not against somewhat increasing this, but it should be
done for both PCM and WAV, it can be a separate patch and discussion.
Regards,
Marton
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