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Motion Blur and Lines in Render
I am using Vegas Pro 8 and whenever I render a file I either get horrizontal line distortion or wavey line distortion around my main subject during fast motion. I have also experienced the subject in motion leaves what I can only describe as a “trail” of it self. Basically I can never get a sharp image in motion. I am editing .m2t files captured from a Sony HVR-A1U, 1440 x 1080 HDV, 29.97fps (with the camera’s 24 cina frame option). I do apply color correction and cropping to most clips. I feel like I have tried every render option and I cannot get a final product that plays back clean. I have tried uncompressed .m2t, .mp4 (20 mbs bit rate) and .wmv (which gave me the best result so far) I need these videos primarily for youtube. Should I be pre-rendering? Is there a step I’m missing?
Thanks
P. Nameck -
7 Replies
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I have the same camera. I think what your seeing is interlacing. Open a new HDV 1440 x 1080 project. Then open the project settings under file, and on the video tab, set your Field Order to none (Progressive scan)and your Deinterlace method to blend for fast moving video, or Interpolate for slow moving video. Blend will make the video smoother but it’s a little blurry whare interpolate can make it jumpy but clearer. Render to progressive as well. Hope this helps, Danny Hays
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Thanks for your response, I was able to get a render without the interlacing lines, but I still have a lot of the motion issues. It almost looks like I filmed with a slow shutter speed… I had shutter speed set to auto while filiming. Have you or anyone, experienced this?
Thanks
P. Nameck -
Did you set your project properties to Blend fields or interpolate? Try both and render a small section to see which looks better. Danny
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I set the properties to interpolate and rendered as a Mainconcept mp4 progressive and it looks a lot better. Thanks for your help.
Thanks
P. Nameck -
Anytime. That’s what we’re here for. Moooo!
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I had the same issue.
My Sony FX1 shoots in 1080i Not progressive, so I was leary about setting my project to progressive. I left it 1080-60i (1440 x 1080)
HDV. UpperField.I had the “Stair Stepping” and “Streaking” look no matter what I rendered at. I wanted the best quality for DVD regardless if I had to wait 24 hours for a 1hr real-time render.
What I did was render to the best .wmv 8bit using project size & best.
But the magic key was bringing up my Super Sampling to “2” on the video bus channel or better yet “3” if you have the render time to spare.This also takes care of the “Twinkling” effect you get when you put high-res still photos on your timeline that may not be even close to your project or render settings.
Not sure if this is the orthodox solution, but it seemed to work for me.
Rick W.
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It might be the frame resampling. This is an issue with vegas that I just discovered.
Frame Resampling can cause a slight “ghosting” or stuttery look to the image. Vegas has resampling activated by default. To deactivate it, select your video clip, then go to Edit->Switches->Disable Resampling.
I’ve got a photo illustration here:
https://cruellegaceyproductions.files.wordpress.com/2012/10/vegas-resample-control.png
Hope this helps!
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