Recording alpha channel to Quicktime

    Salsa_the_hutt
    Dec 18 2018 | 2:54 pm
    Hello fellow users.
    I am back using Max7 and haven't used it in years. I am working with a patch that generates visuals and I am looking to record some clips with the alpha channel ON.
    I am using the animation Codec thinking it would solve the problem, but apparently every topic that I find on a similar subject leads me to a bunch of other issues or situations that doesn't solve my problems.
    When I open the clips in Resolume, I can see that the Alpha channel isn't active. It is still a black background.
    Let me know if you can point me in the right direction.
    Thanks
    • Rob Ramirez
      Dec 20 2018 | 5:27 pm
      you should monitor the matrix output prior to the jit.record to make sure the alpha channel looks as expected.
      you probably want to capture your geometry with a jit.gl.node @erase_color 0 0 0 0 to keep the background transparent.
      and yes animation (if on windows using viddll engine) or prores4444 (if on mac using avf) are codecs that preserve alpha channel.
    • Salsa_the_hutt
      Dec 20 2018 | 6:32 pm
      That's it.
      Thanks a LOT.
      Great help right there Rob Ramirez.
      Weren't you working with Kurt Hentschlager?
      I worked with him at SAT back in the days.
    • Rob Ramirez
      Dec 21 2018 | 6:55 pm
      yup that's me, cheers man!