https://build.opensuse.org/projects/openSUSE:Factory/packages/mediastreamer2/files/fix-build-ffmpeg5.patch

Index: src/videofilters/videodec.c
--- src/videofilters/videodec.c.orig
+++ src/videofilters/videodec.c
@@ -67,7 +67,6 @@ static void dec_init(MSFilter *f, enum CodecID cid) {
 	DecState *s = (DecState *)ms_new0(DecState, 1);
 	ms_ffmpeg_check_init();
 
-	avcodec_get_context_defaults3(&s->av_context, NULL);
 	s->allocator = ms_yuv_buf_allocator_new();
 	s->av_codec = NULL;
 	s->codec = cid;
@@ -591,7 +590,7 @@ static mblk_t *get_as_yuvmsg(MSFilter *f, DecState *s,
 #endif
 		ms_error("%s: error in ms_sws_scale().", f->desc->name);
 	}
-	mblk_set_timestamp_info(yuv_msg, (uint32_t)orig->pkt_pts);
+	mblk_set_timestamp_info(yuv_msg, (uint32_t)orig->pts);
 	return yuv_msg;
 }
 /* Bitmasks to select bits of a byte from low side */
