On 5/28/20, Kerry Loux <[email protected]> wrote: > Hello all, > > I'm trying to create an audio filter graph (in C/C++) that takes a number > of inputs and mixes/splits/merges as necessary to produce a single stream > with multiple channels. > > I would like to be able to control which amerge input is mapped to which > channel in the output stream. For example, if I'm merging two inputs, I > want to control which is the left and which is the right channel. > Similarly, for cases with more than two inputs, I'd like to know/control > which output layout is being created and how each input is mapped. > > Currently, I have an implementation that generates a stream with the > correct individual channels, but mapped incorrectly. When I call > av_filter_graph_config(), I get a message stating "Input channel layouts > overlap; output layout will be determined by the number of distinct input > channels," which seems like a clue. > > When I checked the source in af_amerge.c, I see that there is a route[] > array which I presume controls this mapping. Is this correct? > > If so, then how should I access this array? Through context->priv directly? > > Is there a way to define the output layout for the output of the amerge > filter?
Not possible at all, use join filter instead. _______________________________________________ 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".
