Issues with Speeding Up..

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Issues with Speeding Up..

Post  FabianFisniku on Wed Dec 03, 2014 9:22 pm

Hi Guys,

Last month iv'e done this EDC Orlando show,
Canvas Resolution : 3392 * 1260 divided over 3 Outputs.

It was all running fine (5 Layers and 2 Live Inputs) were no problems at all,
Until i tried to speed up 1 of those layers,
When speeding up over 100% the framerate dropped from the steady 60 to low 20's or even low 10's.

At first we were using the DXV Codec because of File Size purposes and after discussing the problems with dxv we've tried again with the AIM Superstream codec, the overal performance has gone up, until I tried to speed this up again...

Is this a known issue?

Disk Speeds we're over 1300MB read/write.
GPU's were 2* W7000 with S400.
Software Version 8.0.1.36

Still have to thank Ruben Laine for all support during the programming night!

Please let me know if anything comes to mind!.

Kind Regards,
Fabian Fisniku
Ffisniku@tenfeet.eu
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Re: Issues with Speeding Up..

Post  Dave on Fri Dec 05, 2014 5:08 pm

Hi Fabian

Thanks for reporting this. We will look into it. It is not something we have seen before.

Best regards
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Re: Issues with Speeding Up..

Post  rubenlaine on Fri Dec 19, 2014 4:17 am

Thanks Fabian!

Guys, we are currently Running v8 RC4, we are having the same issue with Aim on Quality and Performance, here are the specs

1 fixture 4096x1080 / 4 Layers

Single file 4096x2304

AIM Performance = 9-11 FPS
AIM Quality = 9-11 FPS
AIM SuperStream = 45 FPS at 100% speed

again, thats a single layer playing back. for whatever reason when I open the file inspector (left click on file on performance page) both performance and quality read AIMRGBA and the file size for both files is the same, as is the bitrate...

Speeding up causes playback to drop to 14-18 FPS on a single layer

Please advice as this is a big new years show.
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Re: Issues with Speeding Up..

Post  Dave on Fri Dec 19, 2014 8:15 pm

Hi Guys

Ai uses a pre buffering engine to ensure video plays back as smoothly as possible. This means that it doesn't just load the current frame of video, it also loads subsequent frames in preparation for when they will be required. When Ai plays a video faster than normal it basically has to load a lot more frames of video than when it plays at normal speed. This increase in number of frames of video means more data to read from SSD, which means the systems has more work to do which means a lot more system resources are required..

Ruben, the reason you're seeing AIM RGBA as the mode for both Performance and Quality settings is because you have chosen to preserve the Alpha channel. You should see better performance by choosing to discard the Alpha channel. We reccommend you use AiM Superstream now wherever possible as this should provide optimum performance.
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