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-rw-r--r--DOCS/tech/mpcf.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/DOCS/tech/mpcf.txt b/DOCS/tech/mpcf.txt
index afa5f3d5ee..e6cc0c927d 100644
--- a/DOCS/tech/mpcf.txt
+++ b/DOCS/tech/mpcf.txt
@@ -235,8 +235,9 @@ stream_starcode
0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48)
frame_startcode
0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48)
- frame_startcodes MUST be placed immedeatly before a keyframe if the
- previous frame of the same stream was a non-keyframe
+ frame_startcodes SHOULD be placed immedeatly before a keyframe if the
+ previous frame of the same stream was a non-keyframe, unless such
+ non-keyframe - keyframe tansitions are very frequent
index_startcode
0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48)