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This article refers to the UMID SEI in Panasonic AVC-Intra files. UMID itself is a larger concept that is beyond the current scope of this page.
Panasonic UMID is an SEI in AVC-Intra that many decoders look for.
Some documentation of it will come here whilst it is reverse engineered. It is quite a complex structure so we will aim to document the bare minimum needed to implement AVC-Intra. Following UMID characters:
|Byte offset||Value (if any)||Comments|
|2+3||??||Some sort of counter but not all encoders increment. Would a playout server want this to increment?|
|5+6||??||Seems to both be zero|