Avchd preview framerate

DiDequ wrote on 8/27/2013, 3:05 AM

Hello.
I have bought Vegas Pro 12 recently (build 670), and have red topics concerning preview performance issues on this forum.
I cannot preview correctly Avchd 3D movies : at the beginning, 23.9 fps is ok.
But after some seconds, framerate drops down to 1 fps or even less.

I have installed Vegas Pro on a fresh updated Windows Seven, 64 bits. The only other sofware installed are powerDvd and CCleaner.
I have the latest Nvidia drivers for my GTX 570 graphics card.
My computer has an I7 processor and 24 GB Ram. System disk is a SSD. Data disk is a 7200 rpm HD.
I have checked temperatures:
CPu around 45°C,
graphics card around 65 °C, stable .

I have tried several video preferences:
Dynamic ram setting around 200 Mb , 0Mb, 1Gb
Gpu acceleration on or off

I have tried several preview settings ( from draft to good)
Always the same problem.
When I start previewing a video, without effects, first seconds of video are fluid. But then framerate starts dropping.

My camera (HDC Z 10000 from Panasonic) is not involded, because I tried with a canon legria HF 200 2D videos with the same issue.

And software often crashes after simple actions (canceling second monitor previewing for example)

Comments

OldSmoke wrote on 8/27/2013, 7:28 AM

You have the right GPU but the wrong driver. Use 296.10 with the GTX570 and you get much better performance. Make sure you uninstall the current driver completely before installing the 296.10 driver. Before you get the driver change done, switch off windows auto update as it will overwrite the 296.10 driver in a blink.

DiDequ wrote on 8/27/2013, 1:05 PM

Thank you OldSmoke;
That was an Nvidia driver issue.
I was using the latest 320.49 WHQL driver.
framerate was solved with the 296.10 driver but 3DVision gave a flickering screen.

I then installed the 314.22 driver - everything works great now.