[FFmpeg-devel] [PATCH 2/3] avfilter: add audio upsample filter

[Paul B Mahol]

On 4/19/19, Nicolas George <george at nsup.org> wrote:
> Paul B Mahol (12019-04-19):
>> This is used as part of other filtering. Namely when filter needs to
>> oversample
>> audio when processing - it then upsample audio before processing and
>> downsample
>> it by same factor after processing it.
>
> How do you intend to implement that? Filters cannot call other filters.

Users that know what they are doing will do:

upsample=4,some additional filtering,alimiter=parameters,some
additional filtering,downsample=4

This is already done by SoX.