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    • em_tx
      em_tx last edited by

      Hello there,
      thank you for help in advance!

      I am having a video which has a white backround and moving hand (scale from grey to blue/violet) and I would like to achieve that which color becomes totally transparent, while having hand in tact. I manage to get transparencies, but in total frame (including hand was getting transparent, which I do not want).

      Down I tried one patch, however I doubt that is good, since I am still getting white background.

      Greetings,
      Tomas

      Dell G5 5587, i7 8750 H @ 2.20, NVMe Intel 512 GB, 2TB HDD, NVidia GTX 1060 6GB, MaxQ, RAM 32GB, Win 10
      Isadora 3

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      • em_tx
        em_tx last edited by

        Here its how it looks. I will clear out that FX, recorded output, after I do Aplha Channel, so I keep it on GPU. Its just a test. Thanks.
        f7cb26-screen-shot-2016-05-15-at-21.38.14.png

        Dell G5 5587, i7 8750 H @ 2.20, NVMe Intel 512 GB, 2TB HDD, NVidia GTX 1060 6GB, MaxQ, RAM 32GB, Win 10
        Isadora 3

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        • Michel
          Michel Izzy Guru last edited by

          @em_tx

          Did you try it with the chroma key actor? There is also a FFGLChromaKey actor, I think it's in the TroikaTronix FreeFrameGL Plugin Collection.

          Best Michel

          Michel Weber | www.filmprojekt.ch | rMBP (2019) i9, 16gig, AMD 5500M 8 GB, OS X 10.15 | located in Winterthur Switzerland.

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          • em_tx
            em_tx last edited by

            HI Michel,
            I have partial success with traditional Chroma Key - but there is bit too much of a noise. FFGL gives me control only over entire frame. Regardless of FX what is there before, I just trying to get that blue hand on transparent background.
            Maybe its not work for Isadora, but some editing/FX software.
            Thank you anyway.
            Tomas

            Dell G5 5587, i7 8750 H @ 2.20, NVMe Intel 512 GB, 2TB HDD, NVidia GTX 1060 6GB, MaxQ, RAM 32GB, Win 10
            Isadora 3

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            • mark
              mark last edited by

              Dear @em_tx,

              Given that you have a white background, I would suggest the Luminance Key actor, which is based on brightness not color. Try that... you might have better success.
              Best Wishes,
              Mark

              Media Artist & Creator of Isadora
              Macintosh SE-30, 32 Mb RAM, MacOS 7.6, Dual Floppy Drives

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              • em_tx
                em_tx last edited by

                Dear @mark, dear @Michel,

                I did not really succeed with complete isolating hand that its stays and everything gets transparent. With Luma I am able to get hand transparent (and insert content there), however not a background. Video file I am using is an output of Isadora. I am getting solid white. Its also quite rough.

                With Chroma key I can get subject floating while background (even white) is transparent, but its very rough.

                I tried with After Effects, just I would like to ask which format/codec takes Isadora, that I can import video, where I am able to maintain color and texture while having transparent background and keep the detail.

                Thank you very much!

                Tomas

                Dell G5 5587, i7 8750 H @ 2.20, NVMe Intel 512 GB, 2TB HDD, NVidia GTX 1060 6GB, MaxQ, RAM 32GB, Win 10
                Isadora 3

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                • DusX
                  DusX Tech Staff last edited by

                  I like "hap alpha" for video with an alpha channel.

                  Troikatronix Technical Support

                  • New Support Ticket Link: https://support.troikatronix.com/support/tickets/new
                  • Isadora Add-ons: https://troikatronix.com/add-ons/
                  • My Add-ons: https://troikatronix.com/add-ons/?u=dusx

                  Running: Win 10 64bit, i7-8750H, M.2 PCIe SSD's, 16gb DDR4-2666, nVidia GTX 1070 | located in Ontario Canada.

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                  • em_tx
                    em_tx last edited by

                    Screenshot:
                    5be051-screen-shot-2016-05-16-at-19.35.28.png

                    Dell G5 5587, i7 8750 H @ 2.20, NVMe Intel 512 GB, 2TB HDD, NVidia GTX 1060 6GB, MaxQ, RAM 32GB, Win 10
                    Isadora 3

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                    • DusX
                      DusX Tech Staff last edited by

                      @em_tx

                      the screen capture looks like the correct sort of setup, except that you will gain much in performance using Vid_gpu rather than cpu and,
                      I suggest using the native isadora plugin "Luminance Key". It offers more control and, includes help text that can help you understand the inputs.

                      Troikatronix Technical Support

                      • New Support Ticket Link: https://support.troikatronix.com/support/tickets/new
                      • Isadora Add-ons: https://troikatronix.com/add-ons/
                      • My Add-ons: https://troikatronix.com/add-ons/?u=dusx

                      Running: Win 10 64bit, i7-8750H, M.2 PCIe SSD's, 16gb DDR4-2666, nVidia GTX 1070 | located in Ontario Canada.

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