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Sony Vegas Pro 13 and YADIF issue

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David McCormick
Sony Vegas Pro 13 and YADIF issue
on Mar 26, 2015 at 3:37:36 pm

I have videos I want to deinterlace. They have all been recorded at DNxHD 10-bit 1920x1080 25fps (50i PAL) 185Mbps (Upper field first)

I tried just using interpolate with Sony Vegas and it left some artifacts, so I looked around for a better solution. I saw the YADIF plugin for Sony Vegas as mentioned here: and I tried it on severl of my videos.

I first set the project settings to 1920x1080, Upper field, 25fps PAL, Deinterlace none and set the videos themselves to (None) progressive for the interlace method. That was fine. I then put the YADIF on the vidoes MeidaFX and rendered the video to both a MainConcept AVC 240Mbps 25fps Progressive and a Quicktime DNxHD 25fps 1080p 422 185mbps 10-bit video.

I tired different settings on the YADIF as well. I was able to deinterlace the video and get a sharp video at 25fps, BUT on every video, there is a glitchy, distorted line that appears along the very bottom of the video.

I have two screenshots of the issue, one is of the deinterlaced video and one is the bottom right of the same image, blown up so you can see the distortion

Here is the image (you can see the slight line on the boom right of the image more):

Blown up section of the image:

At first I thought it was to do with adding color correction, levels and an unsharp mask to the video, so I removed those and it didn't change anything, I even noticed the distortion appearing on the preview window as the video was rendering.

Does anyone know what is going wrong and now to stop this distortion?

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Steve Rhoden
Re: Sony Vegas Pro 13 and YADIF issue
on Mar 27, 2015 at 9:41:08 am

Sorry, dont know of a solution in Yadif to help with that
distortion. Tried working with it some years ago but abandoned
it because its not good enough and needs further development.
I still however credit its developer.

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:

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John Rofrano
Re: Sony Vegas Pro 13 and YADIF issue
on Mar 27, 2015 at 8:32:22 pm

[David McCormick] "and set the videos themselves to (None) progressive for the interlace method."
That's the wrong setting. If the videos are interlaced you need set the media properties properly to either Upper or Lower Field First depending on how the fields were processed. In general you should NEVER change the setting on the media unless it is wrong. How else is YADIF supposed to know the correct way to deinterlace them?

Just to recap... the project properties have deinterace set to None because you are going to use YADIF but for the clips themselves, you must set the interlacing properly if you want them deinterlaced correctly.


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