> > A simpler solution, if you only need to implement enabling and disabling > some of the filters, you can expect the "timeline" support does the > trick:
I looked at timeline support, correct me if I am wrong but it is done through the *enable_str *property of *AVFilterContext*. It is activated with *avfilter_init_str *call. This seems like setting the *enable_str * evaluation can only be done once without reiniting the whole graph. If this is the case, is there a way to pass a custom variable to the expression so that I can switch it on or off? The case in the example at the documentation, smartblur is hardcoded to be activated between 10 seconds to 3 minutes, in my case I can not foresee when the filter will be turned on/off. On Mon, Feb 1, 2021 at 11:10 PM Paul B Mahol <[email protected]> wrote: > lowpass, highpass and agate on master git version have both timeline and > command support. > > On Mon, Feb 1, 2021 at 7:39 PM ilkercan Kaya <[email protected]> > wrote: > >> Hi Everyone, >> >> I am making a mobile music app where the user can add multiple different >> FXS at runtime to current playing music through a two dimensional pad with >> an effects header. I am using FFmpeg, libavfilter in C++ to add multiple FX >> to the audio. >> >> My problem is, the user can disable any of the FX's I am using at any >> time as they wish, the effects I use are agate, lowpass, highpass. The >> graph is: >> >> abuffer -> lowpass -> highpass -> agate -> aformat -> abuffersink. >> >> From time to time, I want to disable some of the following lowpass, >> highpass, agate. So I thought I could just reconfigure the graph and >> basically get rid of links to fulfil my wish. I am not sure this is the >> right way to do it tho. I tried to dig online but all I could find was a >> thread from 2012 with no conclusion. Libavfilter documentation doesn't say >> anything about reconfigure or reset existing filtergraph (of that I could >> find). >> >> What would be the best way to do this? >> >> Thank you! >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> https://ffmpeg.org/mailman/listinfo/libav-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". > > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe".
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