[M4IF Technotes] Global Motion Compensation

[Yoshinori Suzuki]

Dear Prabhu and Patrick,
Thank you, Prabhu, for the comments about the table V2-39 issue.
I am proposer of GMC, and I would like to clarify about this issue.
> For Advanced Coding Efficiency,  there is 'X' mark in front of Global 
> motion compensation tool in V2-39.  Whereas, there is no 'X'mark in front 
> of 'Sprite', because (in my opinion) in V2-39, 'Sprite' implicitly means 
> 'static sprite', which is a Version-1 Tool.   
> 
> Thus, Advanced Coding Efficiency profile supports GMC, but not static sprites.
> 
> Prabhu

The comments from Prabhudev are correct.
"Sprite" in V2-39 means the static and low-latency sprite tools (S-VOP in 
case sprite_enable == '01'), and "GMC" means the global motion compensation 
tool (S-VOP in case sprite_enable=='10').
Advanced coding efficiency profile does not support the static or low-latency 
sprite tool. Therefore, there is no 'X' mark in front of 'Sprite' in V2-39 
for that profile.
Best regards,
Yoshinori Suzuki
Hitachi, Ltd.