2 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/crcenc.c b/libavformat/crcenc.c
index ae688e4f07..c67fd09960 100644
--- a/libavformat/crcenc.c
+++ b/libavformat/crcenc.c
@@ -64,4 +64,5 @@ AVOutputFormat ff_crc_muxer = {
     .write_header      = crc_write_header,
     .write_packet      = crc_write_packet,
     .write_trailer     = crc_write_trailer,
+    .flags             = AVFMT_NOTIMESTAMPS,
 };
diff --git a/libavformat/framecrcenc.c b/libavformat/framecrcenc.c
index f87562025c..d845e79c41 100644
--- a/libavformat/framecrcenc.c
+++ b/libavformat/framecrcenc.c
@@ -40,4 +40,5 @@ AVOutputFormat ff_framecrc_muxer = {
     .audio_codec       = CODEC_ID_PCM_S16LE,
     .video_codec       = CODEC_ID_RAWVIDEO,
     .write_packet      = framecrc_write_packet,
+    .flags             = AVFMT_VARIABLE_FPS,
 };