[libav-api] libavfilter: is it possible to update filter parameters during playback?

Andrew Kelley superjoe30 at gmail.com
Sat Sep 14 10:15:19 CEST 2013

Use case example - audio playback. I have decoded frames -> abuffer ->
volume -> aformat -> abuffersink -> audio device. I should be able to
update the volume parameter of the volume filter while feeding decoded
frames into the filter graph.

1. Is this possible in 9.9?
2. Is this possible in current git master branch?
3. Is this on the roadmap?

If it is possible, which API functions are involved?

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