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Pre-Rendering (with Shift+B) lag issue.
For some reason, whenever I edit clips with motion blur (the video bus track motion blur), and pre-render it, it lags throughout the area’s that I have motion blur on. I have my preview ram set to 7000 (my computer can easily handle this, and has before until for some reason today…also please do not give me advice on not using this much!) I don’t know if it’s because my Sony Vegas is glitching, or if it’s because of the clip – the pre-rendered version of what I’m editing runs extremely smooth without the motion blur for some reason, but as I said earlier with motion blur after pre-rendering it lags throughout the motion blur parts. And when I render the clip with motion blur (I did it as a test to see if maybe the pre-render was just glitching…) it is very glitchy, and ugly still. hm… any help?
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3 Replies
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Hmm…. Try PreRendering a small piece to a new Track and then turn OFF the Motion Blur. What do you get?
* Grazie
Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge -
Hi Colin,
“I don’t know if it’s because my Sony Vegas is glitching, or if it’s because of the clip“. If you do a full reset of Vegas Pro and use the option to delete the application cache, this should correct any “glitching” that may be coming from Vegas. If that doesn’t cure the issue, I would say your Vegas is fine.
If your video source media runs fine without the motion blur FX and it renders fine and plays back fine, that would eliminate your video event.
If you have used the motion blur before this project with success, it would appear the FX is fine on your system.
Couple questions….
Is this FX the BCC Motion Blur?
Have you used it before?
Are you on Sony Vegas Pro or Magix Vegas Pro?
Is your Vegas up to date on the latest build?Some observations……
On my system, using Magix 15 (384) and the BCC Motion Blur (trial), on a 4K 24p projects, the first preview of a Dynamic RAM preview, it runs super slow 1 or 2 frames at a time, very annoying! On subsequent playbacks, it runs at Full (Best) preview at 24 fps smooth. I have no explanation as why it runs so slow through on the 1st preview and then runs fine on subsequent previews!
I have no problem viewing smoothly using a ‘Render to New Track (after the source track has been muted), or full render (which is basically the same thing). So I am puzzled by “And when I render the clip with motion blur (I did it as a test to see if maybe the pre-render was just glitching…) it is very glitchy, and ugly still.”
Best Regards……George
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Unfortunately, RAM previews do not always playback smoothly. Try a SHIFT-M selective pre-render in those cases.
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