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-rw-r--r--DOCS/tech/nut.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/DOCS/tech/nut.txt b/DOCS/tech/nut.txt
index 030eac142b..9e7123d4a3 100644
--- a/DOCS/tech/nut.txt
+++ b/DOCS/tech/nut.txt
@@ -41,6 +41,13 @@ Definitions:
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 frame which can be decoded correctly on its own (=without using
+ information from any other frames)
+ if no such frames exist in a codec (for example due to use of overlapped
+ transforms like the MDCT in an audio codec) then a keyframe shall be any
+ frame from which onward all frames can be decoded correctly
+ (FIXME maybe move somewhere else?)
Syntax: