[FFmpeg-devel] [PATCH] avfilter: add apitch filter
Nicolas George
george at nsup.org
Mon May 13 00:00:51 EEST 2019
Marton Balint (12019-05-12):
> Yeah, you are right, what I had in mind was this:
>
> apitch === asetrate,aresample,atempo
Exactly. And reciprocally, atempo = apitch+asetrate+aresample.
Furthermore, since it works with the spectrum, the filter that does the
hard work can probably easily output at any sample rate, at a cost much
lower than resampling afterwards. Therefore, it makes most sense to have
a single filter with all three parameters (sample rate, speed adjustment
and pitch adjustment).
Regards,
--
Nicolas George
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