Designing a Practical MiniMax H3 Video Workflow: Text, Frames, and Omni References

Short summary

A detailed product engineering breakdown of building MiniMaxH3.app, covering three video generation workflows: text-to-video, first/last frame, and omni reference. Each workflow has distinct input contracts, validation rules, and failure surfaces that should not be treated as cosmetic tabs over the same form. The post covers prompt constraints, ordered frame uploads, and credit reservation without charging for failed jobs.

• •Three video generation modes (t2v, flf, omni) require distinct input contracts and validation, not shared UI tabs
• •Workflow labels should describe creative evidence users supply; provider modes are implementation details
• •Ordered uploads and pre-upload validation prevent semantic errors like reversed first/last frames

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