checkrtp.c

#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <stdio.h>

void main(void) {
	av_register_all();

	/* Search for the 'rtp' output format */
	AVOutputFormat *format = av_oformat_next(NULL);

	while ((format = av_oformat_next(format)) != NULL) {
		printf("%s\n", format->name);
		if (strcmp(format->name, "rtp") == 0)
			break;
	}
	if (format == NULL) {
		fprintf(stderr, "Couldn't locate rtp AVOutputFormat\n");
		exit(1);
	}

	int query = avformat_query_codec(format, AV_CODEC_ID_OPUS, FF_COMPLIANCE_NORMAL);
	
	printf("format query for opus in rtp: %d\n", query);

}