[FFmpeg-user] Impossible to get the bit depth value of an audio-file with ffprobe

[scrutinizer]

If the option in question indeed is available then it’s undocumented. The ffprobe help reveals the following usage:

Global options (affect whole program instead of just one file):
-loglevel loglevel  set logging level
-v loglevel         set logging level
-report             generate a report
-max_alloc bytes    set maximum size of a single allocated block
-y                  overwrite output files
-n                  never overwrite output files
-ignore_unknown     Ignore unknown stream types
-filter_threads     number of non-complex filter threads
-filter_complex_threads  number of threads for -filter_complex
-stats              print progress report during encoding
-max_error_rate maximum error rate  ratio of errors (0.0: no errors, 1.0: 100% errors) above which ffmpeg returns an error instead of success.
-bits_per_raw_sample number  set the number of bits per raw sample
-vol volume         change audio volume (256=normal)


There’s bits_per_raw_sample but no bits_per_sample. And the same is true for the video options - no bits_per_sample.
 
> On 5 Aug 2020, at 12:08, Paul Blakeman via ffmpeg-user <ffmpeg-user at ffmpeg.org> wrote:
> 
> 
> 
> Input #0, wav, from 'Lee.wav':
>  Metadata:
>    encoded_by      : Pro Tools
>    originator_reference: 7iGQ3S9p7mlaaaGk
>    date            : 2020-07-23
>    creation_time   : 14:05:55
>    time_reference  : 158865370
>  Duration: 00:04:15.83, bitrate: 1422 kb/s
>    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
> bits_per_sample=16
> bits_per_raw_sample=N/A
> 
> 
> When I try on an audio file created with ProTools 
> 
> ffprobe -show_streams -show_format Lee.wav | grep bits
> 
> On an audio file “bits_per_sample” is what you are after
> 
> 
>> On 5 Aug 2020, at 08:41, Paul B Mahol <onemda at gmail.com> wrote:
>> 
>> On 8/5/20, scrutinizer <iljashebalin2 at gmail.com> wrote:
>>> The file is AIFF, 24bit/96kHz. I want to get the “24bit” part (or simply
>>> “24").
>> 
>> See bits per raw sample field.
>> 
>>> 
>>>> On 5 Aug 2020, at 03:39, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>>>> 
>>>> 
>>>> 
>>>>> Am 04.08.2020 um 16:56 schrieb scrutinizer <iljashebalin2 at gmail.com>:
>>>>> 
>>>>> is it possible to retrieve the bit depth value of an audio-file
>>>> 
>>>> Depends on the file.
>>>> 
>>>> Carl Eugen
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>>> 
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> 
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