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  1. Member
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    Removing the the white haze ( I didn't know how to describe it) in the video in the picture?
    John
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    Last edited by RBCC; 15th Aug 2021 at 16:37.
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  2. Got a small video sample?
    users currently on my ignore list: deadrats, Stears555
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  3. I'm not even sure what he wants to remove. I can see some white haze, but I don't see anything which looks like a "starburst."
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    I want to remove the white haze and keep the background and sharpen it also.
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  5. Does it move or change shape ?

    You can apply various filters/transform such as curves/contrast/ sharpen through a elliptical feathered gradient mask (or whatever "shape" your "white haze" is). You can do this in most video editors

    If it moves/ changes shape, you'd have to animate the mask

    Something like this - you're just combining a "darker" version by using the mask to compensate for the "haze" shape
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    [Attachment 60318 - Click to enlarge]
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  6. Member
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    It stays in the same place all the time. It doesn't move. What free package do you recommend to do this? John
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  7. AviSynth with a similar youtube video:

    Code:
    LWLibavVideoSource("1958 The Young Lions.mp4") # open the video
    spot = Trim(250454, 250454) # the spot on a nearly all black black frame
    Overlay(last, spot, mode="subtract") # subtract the spot
    ColorYUV(gain_y=250, off_y=18) # adjust the levels
    top = original video frame
    middle = spot on a black background
    bottom = original - spot
    Image
    [Attachment 60319 - Click to enlarge]
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  8. Member Skiller's Avatar
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    I sometimes see people putting this haze on purpose over a video in hopes it makes algorithms (like on YouTube) unable to detect the copyright origins of the video. That plus some other butcherings of the video seem to do that trick but the result often is exactly that: butchered.
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  9. Originally Posted by RBCC View Post
    It stays in the same place all the time. It doesn't move. What free package do you recommend to do this? John
    Probably Davinci Resolve gives you the most control. Alternatives would be Natron, or Blender . They all have learning curves. But the basic approach to this sort of problem is the same for all of them with the mask

    If you post the video sample requested, someone might write you a script in avisynth or vdub (gradation curves)
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  10. Member
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    poisondeathray : Thank you very much for the help

    jagabo : Which are the other Video Editors are you mentioning in "Removing "white haze" from I would just say shoot me.online videos"??
    Thank you for your Help!

    John
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  11. Member
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    @Jagabo
    Where did you get the how to guide on what filters to use and their variables ,variable description, variable meaning and what they do? A programmers guide for filters? For beginners . do you make tutorial on this?

    Trim(250454, 250454) is 250454 the screen dimensions
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  12. Originally Posted by RBCC View Post
    @Jagabo
    Where did you get the how to guide on what filters to use and their variables ,variable description, variable meaning and what they do? A programmers guide for filters? For beginners . do you make tutorial on this?
    The AviSynth Wiki has basic instructions http://avisynth.nl/index.php/Main_Page See "Your first script", "Getting Started", etc.

    It also has documentation of the internal filters http://avisynth.nl/index.php/Internal_filters and links to 3rd party filters http://avisynth.nl/index.php/External_filters The 3rd party filters are usually documented at the wiki or they come with .txt or .html docs.

    I learned about AviSynth filtering from those references, and from posts at this site and https://forum.doom9.org/, and general web searches.

    Then there's the docs for AviSynth+ http://avisynth.nl/index.php/AviSynth%2B

    Originally Posted by RBCC View Post
    Trim(250454, 250454) is 250454 the screen dimensions
    That creates a new single frame video with only frame 250454 only. See the docs for Trim http://avisynth.nl/index.php/Trim
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