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  1. Member
    Join Date
    Apr 2018
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    Florida
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    I have a video which is a little on the blurry side which i would like to make more clear and crisp if possible. I know there are many video editing programs out there with the sharpening function, but is there a specific program that does a better job than others at sharpening videos? It would be cool if i could somehow make it like blu ray quality in terms of clarity and crispness, but i know beggars cant be choosers.
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  2. Member budwzr's Avatar
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    Apr 2007
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    City Of Angels
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    If it was possible to do that, nobody would buy 4K. You can't get silk purse from a sows ear. Sharpening creates all kind of weird artifacts.
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  3. Mod Neophyte Super Moderator redwudz's Avatar
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    Sep 2002
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    USA
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    You could try a 'super resolution' plugin. One for VirtualDub2: http://www.infognition.com/super_resolution_vdf/

    The same site has other plugins that you could experiment with. VD2 is a newer version of VD.
    But I doubt any will make a huge improvement.
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  4. I'm not too sure about the "super resolution" plugin. Has anyone used it?

    I downloaded the Avisynth version and took it for a test drive. I tried upscaling several different SD videos to 1080p, and I could barely find a frame where the super resolution plugin did any better than Spline36Resize, but when I downloaded a couple of the SD sample videos from here and upscaled them, suddenly it was doing a much better job. Can an Avisynth plugin be trained to produce a better result with specific samples?

    They seem to be attempting to imply the low res samples at the bottom of the page I linked to above were upscaled from the SD samples on the same page, but that isn't the case. While the Avsynth plugin did do a better job at upscaling the two SD samples I downloaded from their site than it did with my videos, the result wasn't even close to the HD samples. It couldn't be, as the SD samples look like they were created from an interlaced source that was incorrectly resized.
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  5. It looks to me like the SD images were made by downscaling the HD images. The HD images were supplied as a reference so you could perform PSNR calculations on your upscaled results. I think they downscaled using an algorithm that's especially friendly to their Super Resolution upscaling filter. It looks like a simple bilinear downscale -- similar to VirtualDub's "Bilinear (interpolation only)".

    For Super Resolution to produce sharp output it needs to start with sharp input. That may be why it didn't work well with your own samples.

    For the OP to use it as a sharpener he will have to downscale his images until they are sharp, then apply Super Resolution to upscale back to the original size. He should supply some samples of his source for more precise guidance. And, as has been pointed out, don't expect miracles.
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  6. Oh.....
    I'll try downscaling my PAL video later and running it by the super resolution plugin again, although that's somewhat counter-intuitive... downscaling in order to sharpen or upscale....
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  7. Member
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    Apr 2019
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    San Francisco, USA
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    I think it's so hard to reach that level of quality. You can optimize its quality via adjusting the video saturation, brightness, contrast, hue, gamma, etc. More quality improvement methods also include stabilizing shaky video, removing grain noise from clips and using filters.
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  8. @hello_hello: wouldn't it be 'better' to use super resolution to increase the size and then downscale,...?
    users currently on my ignore list: deadrats, Stears555
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