How to export the video with transparent background?

I was trying to use the moviefileout top to export the video, but there was always a black background on it. Can touchdesigner export the video with an alpha background?

hey, welcome to the forum.
You’ll need to choose a video codec which supports alpha, such as:

  • Animation
  • GoPro-Cineform
  • HAP
  • HAP Q
  • HAP R
  • NotchLC

Also for these codecs you need to set the movie pixel format parameter to RGBA instead of RGB