From e9e949cf74391a00751ddec83197bb019b203bd2 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 21 Jan 2010 13:49:47 +0000
Subject: [PATCH] Clarify CODEC_CAP_SUBFRAMES.
Originally committed as revision 21364 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/avcodec.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index ace4863284c..aa59097e35e 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -619,6 +619,14 @@ typedef struct RcOverride{
#define CODEC_CAP_HWACCEL_VDPAU 0x0080
/**
* Codec can output multiple frames per AVPacket
+ * Normally demuxers return one frame at a time, demuxers which do not do
+ * are connected to a parser to split what they return into proper frames.
+ * This flag is reserved to the very rare category of codecs which have a
+ * bitstream that cannot be split into frames without timeconsuming
+ * operations like full decoding. Demuxers carring such bitstreams thus
+ * may return multiple frames in a packet. This has many disadvantages like
+ * prohibiting stream copy in many cases thus it should only be considered
+ * as a last resort.
*/
#define CODEC_CAP_SUBFRAMES 0x0100
--
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