comfyui-workflows/custom/chris/minimax-h3-two-beat-savevideo-test/README.md

MiniMax H3 SaveVideo Tests

Practical test flow for DumasH3LongVideos that:

• uses LoadImage refs derived from images stored in this repo
• renders short beat-based clips
• stays near or under 10 seconds total
• converts the returned image batch with CreateVideo
• saves the final file with SaveVideo

Repo source images

• Character ref: optimized/image-to-video/minimax-h3-r2v-master/references/default-character-reference.jpg
• Location ref: optimized/image-to-video/minimax-h3-r2v-master/references/default-location-reference.jpg

ComfyUI input names used by the prompt

Upload those repo images into the live ComfyUI input folder with these names:

• default-character-reference.jpg
• default-location-reference.jpg

The included baseline prompts expect those names in LoadImage.

The new reference-quality prompt uses these live input names instead:

• chris-character-reference.jpg
• chris-location-reference.jpg

Flow summary

LoadImage x2 -> DiffusionModelLoaderKJ / CLIPLoader / VAELoader x2 -> DumasH3LongVideos -> CreateVideo -> SaveVideo

Variants

• api-prompt.json

  • short proof run
  • 2 beats at 3s each
  • total target runtime = 6s

• api-prompt-realistic-16x9.json

  • longer realistic scenario
  • 2 beats at 4s each
  • total target runtime = 8s

• api-prompt-3beat-10s-480p-quality.json

  • reference-quality follow-up for today's H3 live test
  • 3 beats with explicit per-beat timing: 3s, 3s, 4s
  • total target runtime = 10s
  • expects the provided live refs to be uploaded as:
    • chris-character-reference.jpg
    • chris-location-reference.jpg
  • quality-oriented settings:
    • 864x480 (0.4 MP at 16:9)
    • 20 steps
    • euler sampler
    • beta scheduler
    • H3 turbo LoRA enabled

Notes

• This is a practical API flow, not a promoted master workflow.
• api-prompt.json and api-prompt-realistic-16x9.json remain cheap proof-run variants.
• api-prompt-3beat-10s-480p-quality.json is the quality-biased reference test.