[Libav-user] AVFilter modify parameters

Paul B Mahol onemda at gmail.com
Sun Nov 26 20:53:31 EET 2017

On 11/26/17, Ronak <ronak2121-at-yahoo.com at ffmpeg.org> wrote:
> Hi,
> As I mentioned earlier, I'm trying to use the AVFilter libraries to build a
> graphical equalizer in an iOS app.
> The user will have the ability to manipulate the equalizer settings while
> audio is playing back. However, I don't see an API on AVFilter so I can
> manipulate the gain settings.
> Therefore, it feels like I would have to recreate an equalizer AVFilter and
> rebuild the graph.

Some filters have support for commands.

> Is that the recommended way to go about this?

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