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T
T.Bessho
Participating Frequently
May 28, 2019
Answered

Is there a high-pass filter for videos in Adobe Premiere Pro?

  • May 28, 2019
  • 5 replies
  • 8877 views

What I want to do is putting in high-pass filter effect on each image constituting a video by using Adobe Premiere Pro 13.1.2.

Premiere Pro has a high-pass filter for audios but it does not have a high-pass filter for videos as far as I can see. Photoshop does.

Any idea?

Thanks in advance.

This topic has been closed for replies.
Correct answer chrisw44157881

I found this.

Unsharp Mask is BOTH a high- and low-pass filter.

So you:

  • Make a low-pass filter (radius parameter) - Gaussian blur - result in a low-frequency image
  • subtract this from original image which results in a high-pass image this is the unsharp mask
  • Make a ramped contrast image of original (increased contrast is a sort of high-pass operation)
  • Compare luminosity of the above two images (mask vs contrasty): 100%? then use contrasty pixel; 0% use original pixel; 0 < luminosity < 100 ? blend

To sum up: the sharpening is a high-pass operation blended with the original using a weighting process influenced by a low-pass filter.

5 replies

R
rodneyb56060189
Legend
May 28, 2019

Yes, that was one idea... use photoshop and do a batch process of a macro using high pass on all images (sequence ).  I suppose you could do that if you export the mp4 as numbered images, go to psd and do stuff, and then put BACK into PPro as a sequence.

Never tried it. Could do a small test to see if it works maybe.

Other idea was to use a different NLE (node based ) and see if a simple way was available. I tried it ( basically made a grade from the sample high pass I did on an image, and tried to apply it to the same image ( normal color ).. and it didn't work. I'll probably get back into it on my own just to learn how to do it ( found instructions similar (to some extent) to what Chris posted using parallel nodes and a blending node on internet ).  I like learning from posts here.

R
rodneyb56060189
Legend
May 28, 2019

also, is your video a bunch of numbered individual frames imported as a sequence or is it a regular video ( like mp4 or whatever).

??

T
T.BesshoAuthor
Participating Frequently
May 28, 2019

Yes, I use the same radius setting for each frame of the video.

My video is mp4 format, which is created by a kind of experiment device. If it were a sequence, maybe I could use Photoshop's filter for the individual frames.

R
rodneyb56060189
Legend
May 28, 2019

do you always use the same radius setting for your photoshop filter ??? like this ???

    chrisw44157881
    chrisw44157881
    Inspiring
    May 28, 2019

    if you really need it, you can set all your tools to smart layers in photoshop and do some work in there. it's only meant for simple things and isn't an NLE but CMYK control with video, what the!?!?!?   hehe...

    btw, premiere has an unsharp effect which is a similar cousin as well. I'll keep an eye out for 3rd party plugins and let you know if I see any.

    chrisw44157881
    chrisw44157881Correct answer
    Inspiring
    May 28, 2019

    I found this.

    Unsharp Mask is BOTH a high- and low-pass filter.

    So you:

    • Make a low-pass filter (radius parameter) - Gaussian blur - result in a low-frequency image
    • subtract this from original image which results in a high-pass image this is the unsharp mask
    • Make a ramped contrast image of original (increased contrast is a sort of high-pass operation)
    • Compare luminosity of the above two images (mask vs contrasty): 100%? then use contrasty pixel; 0% use original pixel; 0 < luminosity < 100 ? blend

    To sum up: the sharpening is a high-pass operation blended with the original using a weighting process influenced by a low-pass filter.

      T
      T.BesshoAuthor
      Participating Frequently
      May 28, 2019

      Thank you for your information.

      Please let me confirm your suggestion:
      Bring each frame of the video into Photoshop and process them with Low pass filter and so on?

      No way to complete on Premiere Pro?

      R
      rodneyb56060189
      Legend
      May 28, 2019

      I think you might be talking about adjustments in Lumetri that can be made, and 'Looks' that can be applied quickly...

      Change the look of your clips |

      ???

      T
      T.BesshoAuthor
      Participating Frequently
      May 28, 2019

      No, the "Lumetri Color" does not have a high-pass filter effect.

      R Neil Haugen
      R Neil Haugen
      Legend
      May 28, 2019

      I have no idea what sort of effect you want. And understand there is a MASSIVE difference between stills effects and video post-processing effects. So a bit more explanation would be useful.

      Stills work on one image. Video post effects have to work real-time on 24-60 images per second.

      Neil

      Everyone's mileage always varies ...
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