X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=video_encoder.cpp;h=f7369877b7b55f67a4af3e795a5ed99bb5d88e21;hb=e8a66daac69cf6f243e03489aec8b9321d59e169;hp=c817283690503b8bea94131b1328d13b48c3265d;hpb=47a806bdc9143201072a3c7408f11bbd60b09a0c;p=nageru

diff --git a/video_encoder.cpp b/video_encoder.cpp
index c817283..f736987 100644
--- a/video_encoder.cpp
+++ b/video_encoder.cpp
@@ -170,6 +170,14 @@ int VideoEncoder::write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size,
 
 int VideoEncoder::write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
 {
+	if (type == AVIO_DATA_MARKER_SYNC_POINT || type == AVIO_DATA_MARKER_BOUNDARY_POINT) {
+		seen_sync_markers = true;
+	} else if (type == AVIO_DATA_MARKER_UNKNOWN && !seen_sync_markers) {
+		// We don't know if this is a keyframe or not (the muxer could
+		// avoid marking it), so we just have to make the best of it.
+		type = AVIO_DATA_MARKER_SYNC_POINT;
+	}
+
 	if (type == AVIO_DATA_MARKER_HEADER) {
 		stream_mux_header.append((char *)buf, buf_size);
 		httpd->set_header(stream_mux_header);