Piping video stream using chroma key with melt

Question

I've had excellent results using melt for chroma keying the output of two video files:

melt bg.mp4 -track greened.mp4 -filter chroma key=0x00ff0000 variance=0.45 -transition comp

Is there a technique for piping the raw output of a camera to the -track argument?

Answer 1

You need to use a FFmpeg video4linux2 URL that you know works with ffplay and a simple melt playback command. Don't try anything more complex before ensuring you can simply open and view the camera stream. Walk before running. See the FAQ for more information: http://www.mltframework.org/bin/view/MLT/Questions#How_can_I_capture_audio_and_or_v