@remotion/gif: Add direct premounting to Gif

[JonnyBurger]

Summary

• add direct premounting and postmounting support to <Gif>
• hide and freeze GIF canvases outside their active range while exposing those ranges in Studio
• document the new props and cover schema, styles, and timeline registration

Testing

• bun test src/test/Gif.test.tsx in packages/gif
• bunx turbo run make lint --filter='@remotion/gif'
• bun run build
• bun run stylecheck
• bun render-cards.ts in packages/docs

Closes #9335

Related to #9331

Preview

• <Gif> documentation

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Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview, Comment	Jul 22, 2026 11:22am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
remotion	Skipped		Jul 22, 2026 11:22am

[pullfrog]

Reviewed changes — add premount/postmount support to the <Gif> component so GIF canvases can initialize early and stay frozen outside their active range, mirroring <CanvasImage>.

• packages/gif/src/Gif.tsx — wires InteractivePremountProps, Internals.usePremounting, Freeze, and Sequence premount/postmount display props.
• packages/gif/src/test/Gif.test.tsx — adds schema, visibility, style-override, and range-registration tests.
• packages/docs/docs/gif/gif.mdx — documents premountFor, postmountFor, and the two style-override props.

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