Difference between revisions of "UMID"

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Panasonic UMID is an SEI in AVC-Intra that many decoders look for.
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. Following UMID characters:
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:


{| border="1"
{| border="1"
Line 13: Line 13:
|0
|0
|0x13
|0x13
|Always always 0x13
|Always 0x13
|-
|1
|0xff
|Always 0xff
|-
|2+3
|??
|Some sort of counter but not all encoders increment. Would a playout server want this to increment?
|-
|4
|0xff
|Always 0xff
|-
|5+6
|??
|Seems to both be zero
|-
|7
|0xff
|Always 0xff
|-
|8
|0x14
|Always 0x14
|-
|-
|}
|}

Latest revision as of 09:39, 9 October 2013

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
0 0x13 Always 0x13
1 0xff Always 0xff
2+3 ?? Some sort of counter but not all encoders increment. Would a playout server want this to increment?
4 0xff Always 0xff
5+6 ?? Seems to both be zero
7 0xff Always 0xff
8 0x14 Always 0x14