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Motion blur when rendering video and I cannot figure it out. (Sony Vegas 9)
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When I have had this problem I turned off the BLEND fields to NONE and it cured it..
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Sure. Any Motion under these circumstances will blur. But that is NOT motion blur that the Video Bus gives. It IS part of it, but your requirements are for removing INTERLACE to DEINTERLACE.
– g
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 -
Sorry, I’m still trying to wrap my head around this. So, setting Deinterlace Method to “Interpolate fields” did what exactly? Me confused. lol
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Sure. Try this from WIKI Deinterlacing
Enjoy – It has pictures too!
G
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 -
It’s important to realize what’s happening here. You have a 1080/60i video that you’re rendering to 1080/30p (well, technically 29.97p, but let’s not worry about that).
What you have in that interlaced video is two temporal fields making up one frame. The first one has 540 lines of video at t = 0, the second has the other 540 lines of video at t = 1/60th second. In a true 30p video, you have the full frame changing every 1/30th of a second, in a 60i video you have half the frame changing every 1/60th of a second.
When you preview at half resolution, you’re eliminating half of the scan lines — thus, one of the two fields. So you’re never going to see the effect of interlaced video converted to progressive. And in fact, one of the ways that conversion is done is to simply toss out one of the fields and double the other… so you only have half the vertical resolution, but no temporal effects. And keep in mind that you have to view at Good or Best quality to get a preview of the de-interlacing method, as well. Draft and Preview don’t do this extra computation.
When you chose to Blend Fields, that’s taking both fields and just merging them together. So you get full vertical resolution, but if there’s much motion between the fields, you’ll see the effect of that motion, in artifacts like “mice teeth”, which zoomed out is that ghosting look you see.
When you select Interpolate, it works as I mentioned above… it tosses out one frame, and just interpolates the missing lines in the other by averaging previous and next lines together to fill in. So you have lower vertical resolution, but no problems with motion.
There are certainly more sophisticated de-interlacing methods out there in the world. It’s quite possible to use motion detection between fields to use a hybrid of the two methods, or even motion tracking to detect moving regions and re-align them for the unified image. You have to look at plug-ins for better de-interlacing methods. Sony’s got the two basic methods built-in.
-Dave
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