HandBrake

Im trying to encode my files to 24 bit AAC with Handbrake and the output audio part is still 16 bits. I have selected AAC(avccodec not passthru) bitrate 320, stereo and in 'select behavior' I have put 24 as samplerate bit but wont do, any idea? Thank you

Could you please post your HB logs, instructions can be found here:

https://handbrake.fr/docs/en/latest/hel ... y-log.html

There is no such thing as 24-bit AAC. MediaInfo will report a 16-bit depth for all AAC audio, but that number is meaningless.

https://en.wikipedia.org/wiki/Audio_bit_depth wrote:
Bit depth is only meaningful in reference to a PCM digital signal. Non-PCM formats, such as lossy compression formats, do not have associated bit depths.

ok and technically or historically why AAC cant have 24 bits? thanks

Basically each sample has a different bit depth. This applies to all lossy audio encoding techniques.

thanks, great forum!

The warhorse standard for video is 48Khz 16 bit stereo This was when 16 bits was 16 bits
BluRay brought us into 21st Century audio, but most internet delivery and some media servers are still 16/48 depending on the codec.

Well if you feed 16-bit audio to the encoder, then the maximum actual bit depth of any sample will be 16 bits, of course.

HandBrake feeds 32-bit float to audio encoders, which allows for a maximum of up to 24 bits (integer equivalent) per sample.

Making preservation of BluRay audio fidelity possible, contingent of course on the codecs.

And if a 32 bit float video environment becomes reality at some point, the sky's the limit

Rodeo wrote: ↑Fri Jan 18, 2019 3:29 pmMediaInfo will report a 16-bit depth for all AAC audio

This bug has been fixed years ago, no need to keep saying that in 2019.

Well he must be using an outdated version then.