Re: [FFmpeg-devel] [PATCH v2 9/9] avformat/pcm: decrease target audio frame per sec to 10

[Marton Balint]

On Thu, 14 Mar 2024, Tobias Rapp wrote:

On 08/03/2024 01:53, Marton Balint wrote:

 This makes the wav and pcm demuxer demux bigger packets, which is more
 efficient.


[...]

 +0,     136000,     136000,     2000,    24000,
 f952be1e1c7d48acd73d652ef4ea3aad
 +0,     138000,     138000,     2000,    24000,
 e42cbabef9d9675429dcb6fa28ce39f4
 +0,     140000,     140000,     2000,    24000,
 9c6613b980bcbe9ebacbb6a492f53b16
 +0,     142000,     142000,     2000,    24000,
 1882d1ae4b08fa7cc848eba60d645463
 +0,     144000,     144000,     2000,    24000,
 a361b56ba31c90557689631f0e7afc63
 +0,     146000,     146000,     2000,    24000,
 341fbe24112c4060bb643750895a9041
 +0,     148000,     148000,     2000,    24000,
 38340ef2ef764bb8007efe9cd0af54d7
 +0,     150000,     150000,     2000,    24000,
 9b013a00bbedad211ba33326a3cfaa6e
 +0,     152000,     152000,     2000,    24000,
 9d3469da4442cdfd2b8a5beacb789701
 +0,     154000,     154000,     2000,    24000,
 cf8e3880ecb46011328135dba1015044
 +0,     156000,     156000,     2000,    24000,
 3be9fa7d0e0541269339ee032bda4021
 +0,     158000,     158000,     2000,    24000,
 ffd2646acf86524651416bc412afd846
 +0,     160000,     160000,     2000,    24000,
 715163d8f82f007b1b6c42b06bd08b5a
 +0,     162000,     162000,     1840,    22080,
 c2079a237d021d7aa27e44acf979b1f0

Noob question: Isn't a much larger total number of samples produced here?

The command line which generates the daud file specifies -frames:a 20, and 
20 from bigger packets will cause a longer output file.


Also it might be good to mention in the commit that the audio duration is 
less exact when using commands like "ffmpeg -i $INPUT -c:a copy -t 1.0 
$OUTPUT".

Ok, will add this to the commit message.

Regards,
Marton
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