diff --git a/cinelerra-5.1/cinelerra/ffmpeg.C b/cinelerra-5.1/cinelerra/ffmpeg.C
index 3bb9dd8..bb7bc99 100644
--- a/cinelerra-5.1/cinelerra/ffmpeg.C
+++ b/cinelerra-5.1/cinelerra/ffmpeg.C
@@ -374,7 +374,13 @@ int FFStream::decode_activate()
 		}
 		while( ret >= 0 && st != 0 && !reading ) {
 			AVCodecID codec_id = st->codecpar->codec_id;
-			AVCodec *decoder = avcodec_find_decoder(codec_id);
+			/* hack */
+			const AVCodecDescriptor *descr = avcodec_descriptor_get(codec_id);
+			AVCodec *decoder = NULL;
+			decoder = avcodec_find_decoder(codec_id);
+			if ( descr->id == AV_CODEC_ID_AV1) {
+			 decoder = avcodec_find_decoder_by_name("libdav1d");
+		        }
 			avctx = avcodec_alloc_context3(decoder);
 			if( !avctx ) {
 				eprintf(_("cant allocate codec context\n"));