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-rw-r--r--DOCS/tech/nut.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/DOCS/tech/nut.txt b/DOCS/tech/nut.txt
index bb081560b2..e43173bc44 100644
--- a/DOCS/tech/nut.txt
+++ b/DOCS/tech/nut.txt
@@ -51,6 +51,8 @@ MUST the specific part must be done to conform to this standard
SHOULD it is recommended to be done that way, but not strictly required
keyframe
+ A keyframe is a frame from which you can start decoding, a more
+ exact definition is below
The nth frame is a keyframe if and only if frames n, n+1, ... in
presentation order (that are all frames with a pts >= frame[n].pts) can
be decoded successfully without reference to frames prior n in storeage