lavc: add a property for marking codecs that support frame reordering

1 files changed, 10 insertions, 0 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 8f93911019..7385dd36a5 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -509,6 +509,16 @@ typedef struct AVCodecDescriptor {
  * Codec supports lossless compression. Audio and video codecs only.
  */
 #define AV_CODEC_PROP_LOSSLESS      (1 << 2)
+/**
+ * Codec supports frame reordering. That is, the coded order (the order in which
+ * the encoded packets are output by the encoders / stored / input to the
+ * decoders) may be different from the presentation order of the corresponding
+ * frames.
+ *
+ * For codecs that do not have this property set, PTS and DTS should always be
+ * equal.
+ */
+#define AV_CODEC_PROP_REORDER       (1 << 3)
 
 /**
  * @ingroup lavc_decoding