Pan
A downmix or routing matrix: Pan("stereo", "c0=FL+0.7*FC", "c1=FR+0.7*FC"). The channel expressions are FFmpeg's own pan syntax, escaped as one value because pan's separator is the pipe, which the chain separator must not see.
A downmix or routing matrix: Pan("stereo", "c0=FL+0.7*FC", "c1=FR+0.7*FC"). The channel expressions are FFmpeg's own pan syntax, escaped as one value because pan's separator is the pipe, which the chain separator must not see.