Since*
0.9
Set output format constraints for the input audio. The framework will negotiate the most appropriate format to minimize conversions.
The filter accepts the following named parameters:
- sample_fmts
-
A comma-separated list of requested sample formats.
- sample_rates
-
A comma-separated list of requested sample rates.
- channel_layouts
-
A comma-separated list of requested channel layouts.
If a parameter is omitted, all values are allowed.
For example to force the output to either unsigned 8-bit or signed 16-bit stereo:
aformat='sample_fmts=u8,s16:channel_layouts=stereo'