Set a customized input channel mapping.
@param[in,out] s allocated Swr context, not yet initialized @paramin channel_map customized input channel mapping (array of channel indexes, -1 for a muted channel) @return >= 0 on success, or AVERROR error code in case of failure.
See Implementation
Set a customized input channel mapping.
@param[in,out] s allocated Swr context, not yet initialized @paramin channel_map customized input channel mapping (array of channel indexes, -1 for a muted channel) @return >= 0 on success, or AVERROR error code in case of failure.