av_probe_input_buffer 2289 libavformat/avformat.h int av_probe_input_buffer(AVIOContext *pb, ff_const59 AVInputFormat **fmt,
av_probe_input_buffer 1946 libavformat/dashdec.c     ret = av_probe_input_buffer(&pls->pb, &in_fmt, "", NULL, 0, 0);
av_probe_input_buffer 1974 libavformat/hls.c         ret = av_probe_input_buffer(&pls->pb, &in_fmt, url, NULL, 0, 0);