[Will Stanton]

John- I know you are an expert, but I think you would change your mind if you saw these results:

While rendering to Sony AVC, the GPU acutally fell in temperature as the CPU fans tried to keep the I7 cool. There is absolutely no evidence that the GPU is doing any work other than updating the preview window.

[Will Stanton]

Here is the official reply by Sony Tech Support:

Thank you for contacting Sony Creative Software.

The GPU only takes on some processes that are supported by GPU Acceleration, like the page peel effect in Vegas. The GPU in your system will only take on processes that are meant to be accelerated by it. Otherwise, your CPU will take on the rest of the work.

To reach the fastest rendering times you can, you have to address what bottlenecks are present in your system, which can vary based on CPU and GPU capabilities, RAM and disk speed, source format and effects used, as well as render formats and templates.

If you still have a follow-up question on this particular incident, please feel free to update it. If you have a completely different question, please create a new incident.

[Will Stanton]

Ok, it used to work with a radeon 5700.

But, now I am rendering in “Sony AVC/MVC”. There is even a button to press which returns “OpenCL is available”, but it is still CPU.

Since I have very high speed upload capabilities, I will use lower compression (eg 135 mb/sec) for 1080-60p and let googleyoutube do the rest.

But I paid alot for the 390 expecting it to work with Vegas.

[Will Stanton]

If it matters in this forum….

My R9 390 cannot not be used as an encoder for Mainconcept or anything else in Movie Studio 13 or Vegas Platinum 12, even though 12 reports that OpenCl is available. These programs simply refuse to render with the R9 390, even though “Use OpenCl if available” is checked in preferences and in certain templates.

I guess I will install a trial version of Vegas Pro and see if it works with that.

[Will Stanton]

H264 video from my Canon HF200 works well in Vegas.

H264 video from my Contour Camera causes Vegas to crash or malfunction.

I am trying to preconvert the contour camera stuff to avi for editing.

[Will Stanton]

I am still looking for a program to change H264 to .avi as losslessly as possible. Avisynth crashes more often than Vegas. Slipstream is for Apple.

I looked at a program called Super but it wants to dump spyware on my system, so I cannot install it.

Does anyone have any suggestions?

[Will Stanton]

Well one thing about using lossless is that there are not too many choices to make regarding bitrate, motion estimation, blah blah blah.

I tried AviDemux but it wants to split the files up into 1600 megabyte chunks, gives me warnings about either crashing or losing frame accuracy if the source uses B frames (I dont know and dont care), and, in general, is a pain in the ass.

Is there a simple program where you open the H264 video and hit a button to save it using a lossless codec such as Lagarith…a simple program that preserves resolution and frame rate and maybe defaults to saving the audio as uncompressed PCM?

I’ll try slipstream tommorrow…..

[Will Stanton]

I use main concepts codec, same resolution as source material, 50mbit/sec constant bit rate, full progressive (per youtube instructions). And I set the audio bit rate very high as well.

50 mbit/sec is a huge number that gives the youtube codec the best quality of material to work with. Of course, youtube has to cut the bitrate way down. But in time they may re-encode for higher bit rates than now.

[Will Stanton]

I tried that and Vegas rendered the video with the audio way out of sync. I was using a Canon Camera. Instead I use main concepts codec, render in full progressive per youtube guidance, and set stream for 50MBit/sec so the compression at you tube won’t add any artifacts.

[Will Stanton]

Thanks All