AME for transcodes

[Subhadip Sen]

It's a RAID drive that clocks much higher than 60MB/sec... Plus I'm writing to a separate internal drive. Debayer Detail is not equivalent to Debayer Resolution. Switching it from High to Medium is not like going from Full Resolution to 1/2 Resolution.

Aha, if it's a RAID0 Drive it is OK. You might want to check your CPU usage however. If it is dropping below 90% or so, then there is obviously a bottleneck. What does Debayer Detail do exactly?

[Andrae Palmer]

Aha, if it's a RAID0 Drive it is OK. You might want to check your CPU usage however. If it is dropping below 90% or so, then there is obviously a bottleneck. What does Debayer Detail do exactly?

"Debayer Detail has three settings: Leading Lady (e.g., low detail); Medium, or High. These vary the aggressiveness of detail extraction, with Leading Lady being quite soft and naturalistic with High being crisper but on the verge of decoding edges too harshly." --- Got this explanation from Pro Video Coalition

[Subhadip Sen]

"Debayer Detail has three settings: Leading Lady (e.g., low detail); Medium, or High. These vary the aggressiveness of detail extraction, with Leading Lady being quite soft and naturalistic with High being crisper but on the verge of decoding edges too harshly." --- Got this explanation from Pro Video Coalition

I have to say, that reveals nothing. "Low resolution" can be equated with "soft" and "high resolution" can be equated with "crisp" just as well. Also, "Leading Lady" was from CS4 era.

[Andrae Palmer]

I have to say, that reveals nothing. "Low resolution" can be equated with "soft" and "high resolution" can be equated with "crisp" just as well. Also, "Leading Lady" was from CS4 era.

Well it could be equated more akin to blur/sharpness than resolution. I've seen Debayer resolution and Debayer detail on a menu before... So I'm sure they are separate functions. If the debayer resolution is at full then that's a 4k image... So adjusting the detail level would be like sharpening or blurring a 4k image. It's not really lowering the resolution of the image.



Debayer Detail is shown as a separate function in CS4 RED Plugin. I'm still trying to get a detailed understanding of it... Hence the questions I've posted on here, adobe forums and creative cow.

[Andrae Palmer]

"Debayer detail adjust the debayer algorithm depending on what's appropriate for the subject matter. From what I understand, higher settings favour detail; lower settings (Leading Lady) favour smooth gradations." --- http://reduser.net/forum/showthread....d-Sharpening.&

[Subhadip Sen]

That makes sense. The playback window lets you choose resolution. As for the final render, I have always just stuck to the best possible quality and haven't looked at much else. Maybe someone from Adobe can comment? Maybe the debayer resolution is selected automatically based on the output resolution? (i.e. Full debayer for 4K, 1/2 debayer for 1080p, etc)

[Andrae Palmer]

Judging by the amount of CPU power being utilized and the correlating render times compared to RCX... I think it's a full debayer. The CPU power being utilized is about 4X to 7X compared to RCX on Full debayer. The render times then correlated to a corresponding increase. AME is also utilizing the GPU for certain functions. On the below example, the CPU utilization difference was 4X but the render times was over 7X.

RCX:


AME:


33 second clip done in 47 seconds with AME... not bad for CPU debayering at full resolution. At these speeds I can live without a RED Rocket card.

[Andrae Palmer]

Got an answer from Steve Hoeg at Adobe. The setting below is what controls Full resolution. If it's not checked then AME will automatically control resolution via the output resolution. So 4K to 1080p would be 1/2 Resolution.



http://forums.adobe.com/message/3845231#3845231

Will do some new benchmark testing as my previous hypotheses was wrong.

[Kenn Michael]

good info!

[shashbugu]

Thanks a lot Andrae. Very good info. Most of us quit complaining about render times years ago.