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video - audio sample format s16p, ffmpeg or audio codec ...
https://stackoverflow.com/questions/35226255/audio-sample-format-s16p-ffmpeg-or-audio-codec-bug
With the same video, its sample format changes to s16p. I implemented a simple video player which uses ffmpeg. It can play video 3 years ago, but failed to output the correct pcm stream after changing to update ffmpeg. I spent lots time and finally found that the audio should have been s16 instead of s16p. The decoded audio stream works after I ...
ffmpeg -sample_fmts | usage.toolstud.io
https://usage.toolstud.io/docs/ffmpeg/usage/sample_fmts/
This is a list of the audio sample formats supported by ffmpeg. the ‘s16p‘ type of code is also the one you will find back in the output of ffprobe. u8: 8 – unsigned 8 bits s16: 16 – signed 16 bits s32: 32 – signed 32 bits (also used for 24-bit audio) flt: 32 – float dbl: 64 – double u8p: 8 – unsigned 8 bits, planar s16p: 16 – signed 16 bits, planar
Sample formats: fltp (lossy) to s16p or s32p (ALAC)
https://hydrogenaud.io/index.php?topic=116989.0
because of compatibility problems I need to convert some DTS, DTS-HD HR, AC-3 and E-AC-3 audio streams to ALAC. The lossy formats are stored as fltp (depth: 32 bit). So my question is: To preserve all information, should I convert them to s16p-ALAC or better s32p-ALAC (although mediainfo sometimes tells me bit depth of lossy stream is 16 bit).
#7321 (Sample format for mp2 audio channel is …
https://trac.ffmpeg.org/ticket/7321
At least for my sample MPEG-TS file, current versions of ffmpeg (I tried it with the current git-master version) fail to determine the sample format for mp2 audio channels correctly. Though the sample format is s16p, it is reported as fltp. For example: ffprobe mp2_fltp_instead_of_s16p.mpegts. Please find more informations in the log file.
audio - ffmpeg only outputs at bit depth s32p when ...
https://unix.stackexchange.com/questions/563286/ffmpeg-only-outputs-at-bit-depth-s32p-when-converting-from-flac-to-alac
Ah! I did not realize that ALAC used planar encoding (s16p, s32p). Still it seems that the s16 option would provide ffmpeg with enough of a clue to 'do the right thing' given that it knows the conversion is to ALAC. But in any case, this seems to have resolved the issue as Sonos now plays it. – Seamus
HD audio support only with OpenELEC test builds and PCM?
https://forum.kodi.tv/showthread.php?tid=226176
You might want to post the mediainfo for both files - the s32p/s16p value may vary with the "bit depth" of the audio stream. All of my 7.1 DTS HD samples show "s32p (24 bit)" and have 24 bit depth. I'm assuming s32p/s16p means signed-32 and 16 bit quantities (24 bit samples may be treated as 32-bit?)
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