I’m working mostly in the mac univers, little in windows, but if, i have good results with:
working in GPU, not in CPU
not using fullscreen attribut, but jit.window @size (of your wanted projection/image size)
working therefore with a coherent size from source to projection
vidvox should be releasing the windows version of the hap codec in the near future.
when this happens, the hap codec with the jit.gl.hap external will be your most efficient solution for video playback, assuming you’re using opengl.