UMID: Difference between revisions
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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. | Panasonic UMID is an SEI in AVC-Intra that many decoders look for. | ||
Some documentation of it will come here. 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" | |||
|- | |||
! align="left"| 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 | |||
|- | |||
|} | |||
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 |