Slow AVCHD rendering

[Lewis Nabulsi]

Im not sure if this will help but what i tend to do is go to the task manager and set vegas on the highest priority, at this stage it’s also a good time just to get rid of unwanted applications running in the background.

I have seen my render times being cut to as much as 20% doing this, you shouldn’t realy have a problem because a quad core cpu has 8 threads in total, two for each processor.

Hope this helped, i am a new to the forums!

[Stephen Mann]

Low CPU activity only means that the CPU is not the bottleneck in your process.

[Useph George] “Is sony vegas aware?”

Aware of what? That you have a slow PC?

You say nothing about your project but your encode time could be about right for a 2GHz PC.

Steve Mann
MannMade Digital Video
http://www.mmdv.com

[Jason Dee]

i’m not sure if this is your problem, but one thing i would do is download hwmonitor and check your cpu temperatures when rendering. i was getting really high temps over (over 85 degrees c) which throttled down my cpu multiplier which in turn would give me 20-40% cpu load. when i fixed the cooling issue i had, i was able to get full 80-99% cpu utilization again.

[Frederic Baumann]

Thanks for this comment which I find quite interesting.

I have posted a few benchmarks last October about AVCHD rendering with Vegas Movie Studio 10 (including GPU), Vegas Pro, and Premiere Pro (search for my name + GPU to find the threads on this forum).

How did you solve your cooling issue? by changing the fan? something else? I will have a look to this hwmonitor tool.

Would you know if one can boost the GPU usage as well, with more cooling applied to the GPU? (should not be that easy to change this, I guess).

Best regards,
Frédéric

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[Useph George]

Here is an image of the “Resource Monitor” while vegas 10e was rendering my camcorder AVCHD video into a blu ray image ( tools->burn->blu-ray ).
even though there are 8 “cpu”, the net average runtime is just 25% ( or just one core.)

resourcemonitor_vegas_10e.jpg

trying to get a reply fro vegas tech help gets me this response:

The cores are allocated by job and not necessarily by amount of allocation required. If there is one job that needs to be performed, one processor gets allocated to that job. Renders do not always pin the processor load on the machine, depending on the quantity of jobs run and processing power required.

If I have a house with 8 rooms, a single worker might take 8 hours to clean up. But if I hire 8 workers, I somewhat expect to have the job done in about 1 hour. With vegas as management, the task will still take 8 hours.

Some codecs apparently cannot be run across processors. But my understanding is that AVCHD can be threaded across cores.

[Useph George]

Here is a pic of the resource monitor running vegas pro 9e on an AMD quadcore (no hyperthreads). CPU utilization is near 100%. FileIOsurrogate.exe is using a lot of cpu time.

resource_monitor_vegas_9e.jpg