How to control the numbers of frames loading in the Load Video node?
When loading the source video from your folder, there are couple of options to limit the loaded frames from that source video, please see the detailed guide of Load Video node.
You can set the frame_load_cap to 0 if you want to load the full length of source video. Please be aware that there is a limit on your GPU VRAM size when you load too many frames, you can try the double up strategy to find the maximum frames your GPU VRAM and RAM could handle, say 50 frames, 100 frames, 200 frames, 400 frames, etc.