24-bit PCM files show "Bits per sample: 32" in media info

Wrong "bits per sample" number is displayed for PCM files with 24-bits-per-sample resolution. It, obviously, should be 24, yet it's displayed as 32. Yet if you look at the "codec" field, it clearly shows 24-bit resolution.

Please share a sample.

Sample uploaded to streams.videolan.org. In case it didn't work, you can get it from Dropbox: https://www.dropbox.com/s/log34po4jbufcne/24bitsample.wav

http://streams.videolan.org/issues/10053/

Added attachment:

• VLC_BitsPerSample_bug.jpg

hi: I too have observed the behavior reported on this ticket. I have some sample high resolution PCM files downloaded from HDtracks and other sources, both 96k sample/sec and 192k sample/sec. Both have 24 bits/sample. Yet VLC player reports them as 32 bits/sample.
When playing other PCM files, VLC reports 16 bit (or even 8 bit for some crummy sound-effect wave files). So I guess the code only misbehaves for 24-bit sources? I think I have uploaded a screen-grab of VLC codec-display showing 32-bits while playing a 192ksample/sec 24-bit source. (Just to augment the other person who supplied an example of VLC misreporting bit/sample when playing a 96ksample/sec 24-bit source.) I am running 2.1.2 rincewind version of VLC on Win-8.1 64bit OS. This is a super mundane bug. (For all I know, maybe its some sort of Windows OS bug??) VLC is a great player.
Thank you for making VLC available.
Best wishes, Bob Enger

All this is normal:

We output either 16bits or 32bits. For 24bits, it is padded to 32bits.

It correctly behaves but is not correctly shown in this info dialog.

Replying to [comment:5 jb]:

All this is normal:

We output either 16bits or 32bits. For 24bits, it is padded to 32bits.

It correctly behaves but is not correctly shown in this info dialog.

Ah but I also get "Bits per sample: 32" with 16-bit FLAC, see attached files.

screenshot of "Bits per sample: 32" when 16 is expected.

Added attachment:

• wrong_bits_per_sample.png

added Component::Core: Input label

See #20120 (closed)

marked this issue as related to #20120 (closed)

changed milestone to %4.0

added Component::Core: Audio output label and removed Component::Core: Input label

added Status::fixed Type::feature labels

closed