• Isadora
  • Get it
  • Forum
  • Help
  • Plugins
  • Newsletter
  • Impressum
  • Dsgvo
  • Impressum
Forum

Navigation

    • Register
    • Login
    • Search
    • Categories
    • Recent
    • Popular
    • Tags

    In Praise of Dither

    Feature Requests
    actors isadora 3 isadora 2 dither
    5
    12
    2801
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Videosmith
      Videosmith last edited by Woland

      Hi all

      with V3 coming up, I realised that some of the actors I use the most were depreciated in V2, and so could be facing their final curtain call this Sept. One in particular has been my go-to video effect to cheer me up when I need some 8-bit affection:

      DITHER

      If it is to be struck, I'd like to plea for it's survival, or else I'd like to offer a lament to this cornerstone of my video aesthetic.

      Yes, dither is crude, but that is its beauty. In an age of 4k, I want lo-resoution in 16 colours max. As a child of the 80s, raised on a ZX Spectrum, I've held onto a belief that less is more when it comes to pixels.  I've applied this belief to my practice, creating infinite glitching poems for Virgin Records, 8 bit waterfalls in the Royal Opera House, and a lo-res translation of Eadweard Muybridge's iconic Horse in Motion, amonst other things.

      Plus anything you can dither, you can KNIT! For me, dither is my live connection between the world of video and the world of textiles.

      With the development of the the excellent RetroSpecs app, and the Teletext revival, we need need more dithers, not less!

      yours, respectfully

      Sam

      Reply Quote 5
        1 Reply Last reply
      • CitizenJoe
        CitizenJoe last edited by

        This is brilliant:

        Reply Quote 2
          Videosmith 1 Reply Last reply
        • Maxime
          Maxime last edited by

          @Videosmith this can be easily found and done with GLSL (like most effects that could be deprecated)

          Do a little research on shadertoy.com , i'm sure you will fond something to cheer you up :)

          Reply Quote 0
            Videosmith 1 Reply Last reply
          • Videosmith
            Videosmith @CitizenJoe last edited by

            @citizenjoe thankyou :)

            Reply Quote 0
              1 Reply Last reply
            • Videosmith
              Videosmith @Maxime last edited by

              @maxime thankyou for the suggestion - I didn't realise there was this whole world out there! I must admit though, I struggle with code, and will miss the direct fuctionality of an out-of-the-box dither actor.

              I've had a little play with some samples, but everything is really anti-aliased :S Any tips appreciated

              Reply Quote 0
                Michel 1 Reply Last reply
              • Maxime
                Maxime last edited by

                @Videosmith can you send me the code you're using?

                Reply Quote 0
                  Videosmith 1 Reply Last reply
                • Videosmith
                  Videosmith @Maxime last edited by Videosmith

                  @maxime

                  here you go:

                  • Classic Mac floyd-steinberg-ish
                  • Obra dinn dithering

                  Reply Quote 0
                    1 Reply Last reply
                  • Maxime
                    Maxime last edited by

                    @Videosmith you're second link is not working but i think i could find this obra dinn dithering shader, but it doesn't work in isadora as there's a buffer in it.

                    Considering the first one, I don't have this anti-aliased problem as you do..

                    Reply Quote 1
                      1 Reply Last reply
                    • Michel
                      Michel Tech Staff @Videosmith last edited by

                      @videosmith

                      I can imagine that your default resolution in Isadora is set very low. You can either change it in the preference settings or over ride it by changing the width and height values of the shader actor to a higher resolution.

                      Best Michel

                      Reply Quote 1
                        Videosmith 1 Reply Last reply
                      • mark
                        mark last edited by

                        @videosmith said:

                        with V3 coming up, I realised that some of the actors I use the most were depreciated in V2, and so could be facing their final curtain call this Sept. One in particular has been my go-to video effect to cheer me up when I need some 8-bit affection:

                        Just so everyone knows why I dropped Dither (which I also always liked): it is absolutely QuickTime specific, and that's for sure a no-go in Issadora 3 b/c 32-bit will be gone someday on MacOS and we definitely can't continue to support QT on Windows for reasons outlined in another post. I looked at GLSL algorithms previously, and wasn't satisified that they looked enough like Dither to include them.

                        Best Wishes,
                        Mark

                        Reply Quote 1
                          Videosmith 1 Reply Last reply
                        • Videosmith
                          Videosmith @mark last edited by

                          @mark cheers Mark - I understand  - i am looking forward to V3 in any case :)

                          Reply Quote 0
                            1 Reply Last reply
                          • Videosmith
                            Videosmith @Michel last edited by

                            @michel it's odd - it was set at 1280 x 720. I'm still getting the aliasing when I set the shader to a low resolution. It's tough to find that balance of a clean dither and a lo-res look.

                            Reply Quote 0
                              1 Reply Last reply