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DeInterlacing footage in Sony Vegas
So I’ve been attempting to render a video in Vegas Pro 14 and I keep coming across this issue where the final rendered video has a bunch of horizontal lines from improper deinterlacing. For the record, the original footage I captured is already interlaced so I know Vegas has to deinterlace it, but despite playing around with the deinterlacing methods and project/media settings I can’t get anything to look as smooth as it does in my preview. I read that there might be an issue with how Vegas scans the video. The thing is that if I set my source media properties as either Upper or Lower Field, then when I render with a DeInterlace method selected and progressive scan the final output looks horrible. If I set the source media to progressive scan and keep progressive scan in my final render then the quality is not as bad but there’s still some noticeable interlacing, even though the preview shows zero interlacing when I set preview to best.
I’m all out of ideas of what I could do with the footage at this point. Clearly there’s something I can do with the settings to make the render look as good as it can because I can get the preview to look really well, but the actual rendering doesn’t click for some reason.
For the record, the way I get the best quality in my preview is by setting source media to Progressive (None) and both the project settings and the render to Progressive as well, it just doesn’t actually render it the same quality as the preview. Even then if I zoom on the preview there’s some fairly noticeable interlacing. I guess it all really comes down to this: What media/project/render settings do I go about using if I have interlaced footage that I need to deinterlace for the final render?
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6 Replies
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Hi Adam,
I think the setting you have selected are going to give you the best that is available from Vegas Pro 14. However, I do have some questions……
Can you post a screenshot of the source media specs? Use the free app Mediainfo (in text mode go > View > Text). From what camera was the source media filmed with?
I don’t think you will get any better quality using variable bit rate, setting the max and avg to the same amount and double pass, as you will by using constant bit rate, at say 20,000,000.
You probably can get better deinterlace by using the Happy Otter Scripts ‘Render+’ add-on. It is currently a free beta.
When I use the setting you have selected in (Vegas Pro 15), on .m2t HD footage, it eliminates the interlace, leaving minimal artifacts, which is acceptable to me.
Best Regards……George
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I used OBS to capture all the footage from a video capture card. OBS interlaces all the video heavily but I used it instead of other software because it allowed me to get higher quality footage. Anyhow, playing around with the media and render settings I found that I could really minimize the interlacing by setting the media scan to Progressive and the render to Lower Field First. I’m still at a bit of a loss as to what Vegas is doing regarding the interlacing because just one of the clips wouldn’t deinterlace unless I specified the media scan as LFF as well. All the footage is from the same source too.
There’s still a problem with ghosting in the image though (using the smart adaptive deinterlacing for the moment) and some noticeable interlacing leftover in at least one other clip that I can’t seem to get rid of no matter what.
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Adam, is that Mediainfo report on your source media? If it is, your source is progressive, not interlaced. Also 8,000 kb/s bit rate seems like a delivery rate rather than a capture bit rate. I don’t use OBS, but I know of many that do and as far as I know all of them are recording in progressive with OBS.
Best Regards……George
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Indeed, that is the source media. The actual bitrate that I have set up in OBS is also nowhere near that. Here’s a comparison of the footage I have raw vs rendered.
Raw on the left, rendered with the deinterlace on the right.
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Adam, can you upload here a small/short source media sample, maybe something around 50 meg or smaller?
Best Regards……George
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Hi Adam
In addition, it would be a + if you could tell us what you were recording. If it was of the Web, it must have been a relatively older clip to be interlaced. Learning about your source file will help us help you.
Cheers !
PC Win 10 Pro 64-bit 16gb Intel® Core™i7-2600k Quad Core 3.40GHz
Cameras: Canon XF305 + Canon XH-A1
Blackmagic HyperDeck Studio Mini
Vegas Pro 16, User since Vegas 3.0\’\’When the cutting stops, the editing begins…\’\’
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