@param codec AVCodecContext, usually from an AVStream
@param pkt the packet to apply filters to. If, on success, the returned
packet has size == 0 and side_data_elems == 0, it indicates that
the packet should be dropped
@param bsfc a NULL-terminated list of filters to apply
@return >=0 on success;
AVERROR code on failure
Apply a list of bitstream filters to a packet.
@param codec AVCodecContext, usually from an AVStream @param pkt the packet to apply filters to. If, on success, the returned packet has size == 0 and side_data_elems == 0, it indicates that the packet should be dropped @param bsfc a NULL-terminated list of filters to apply @return >=0 on success; AVERROR code on failure