[Libav-user] AVFilter modify parameters

Ronak ronak2121 at yahoo.com
Sun Nov 26 21:14:17 EET 2017

Hi Paul,

Do you have any examples of what kinds of commands I could send to the filter to manipulate the gain?



> On Nov 26, 2017, at 1:53 PM, Paul B Mahol <onemda at gmail.com> wrote:
> 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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