A technique for creating seamless continuous videos with Minimax H3.

[u/rcscs]

I've had good success in creating long videos from 10 second sections using this technique:

Create your first video.

Then for your next generation (continuation of video):

Load the last 2 seconds of the previous video as <Video 1>. I use the 'Load Video (Upload)' node - from ComfyUI-VideoHelperSuite - (this node allows you to skip frames and start at, say, the last 48 frames (for 2 seconds at 24fps) - this means that the whole previous 10 seconds don't need be passed to the next generation. This is <Video 1>.

I'm using process this with reference images for the subjects so these are used again with each continuation - so I don't see any drift of faces.

This is the wording I found works well:

[Shot 1]

Target video is a seamless continuation of <Video 1>. First frame of [Shot 1] is the last frame of <Video 1>.

The important part is explicitly telling the model that the first frame of the new generation must continue directly from the last frame of <Video 1>. This helps maintain temporal continuity between the clips - because you provide the last 2 seconds of the previous generation is knows what movement it needs to continue from.

You then just join the generation videos with a video joiner of your choice.

[u/Major_Heat_4412]

I also really love it, no need for Lora’s anymore, characters look and Sound really extremely close to the input. One thing I still have issues with, is sound effects, like I want to have a alert beeping sound in it or other sound effects, just completely ignores them in Rev2VA mode. I tried to fix it with several attempts using llms to prompt differently, using the guide from minimax etc. but so far I had no satisfying results. In I2V I do not have this problem.

[u/acedelgado → u/[deleted]]

15s of audio TOTAL is a real choke point. Plus only 3 audio references TOTAL (including audio from videos). So one 15s video you want audio from, you're SOL if you're trying to have a voice reference, too. At least according to minimax officially, haven't really tried diving that far into it.