Guides

Transparent Output

Output alpha channel files for compositing workflows.

Supported Transparent Formats

FormatAlphaBest Use
WebM (VP9)YesWeb playback and browser delivery
MOV (ProRes)YesProfessional editing pipelines
PNG SequenceYesFrame-level post-production
GIF/WebPYesShort social assets

Quality Considerations

  • Use higher resolution exports for fine hair and translucent objects.
  • Avoid unnecessary re-encoding in downstream pipeline.
  • Keep source and output FPS aligned when possible.

Quality Guardrails

  • Prefer representative source clips when tuning model defaults.
  • Keep input compression moderate to preserve edge details.
  • Use explicit output format policy for transparent vs non-transparent workflows.
  • Run A/B validation with the same clip set before changing defaults.

Implementation Checklist

  1. Define payload schema validation in backend before forwarding requests.
  2. Store model/output_format/background settings with each job record.
  3. Add internal quality review for difficult scenes (hair, glass, motion blur).
  4. Create runbook entries for model-specific failure cases.

Alpha Pipeline Notes

  • Prefer WebM/MOV for true alpha channel workflows.
  • Validate downstream editor/player alpha support before rollout.
  • Use premultiplied-alpha aware compositors to avoid halo artifacts.