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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 0843ab5b79..4d34301144 100644
--- a/DOCS/tech/nut.txt
+++ b/DOCS/tech/nut.txt
@@ -568,6 +568,13 @@ codec_specific_data
the exact format is specified in the codec spec
for H.264 the NAL units MUST be formatted as in a bytestream
(with 00 00 01 prefixes)
+ codec_specific_data SHOULD contain exactly the essential global packets
+ needed to decode a stream, more specifically it SHOULD NOT contain packets
+ which contain only non essential metadata like author, title, ...
+ it also MUST NOT contain normal packets which cause the reference decoder
+ to generate any specific decoded samples
+ the encoder name and version, shall be considered essential as it is very
+ usefull to workaround possible encoder bugs
frame_code
frame_code is an 8-bit field which exists before every frame, it can