ff_add_param_change 1299 libavformat/flvdec.c         ff_add_param_change(pkt, channels, 0, sample_rate, 0, 0);
ff_add_param_change  469 libavformat/internal.h int ff_add_param_change(AVPacket *pkt, int32_t channels,
ff_add_param_change  178 libavformat/ipmovie.c             ff_add_param_change(pkt, 0, 0, 0, s->video_width, s->video_height);
ff_add_param_change  395 libavformat/swfdec.c                 ff_add_param_change(pkt, 0, 0, 0, width, height);