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v4.0.425

remotion-dev/remotionv4.0.425Feb 19, 2026by JonnyBurger

AI Summary

This release continues the CLI migration to the new options system, adds automatic premounting of Sequences from Remotion 5.0, and includes various Studio improvements and bug fixes.

Key Highlights

  • Automatic premounting of Sequences from Remotion 5.0
  • Multiple renderer options migrated to options system (pixel-format, browser-executable, user-agent, etc.)
  • Disallow selection on timeline
  • Better handling of missing modules
  • Concurrency converted to proper AnyRemotionOption

New Features

  • Automatic Sequence premounting from Remotion 5.0
  • Timeline selection disallowing
  • Override support for fps and durationInFrames

Full Release Notes

## What's Changed
* `remotion`: Automatically premount Sequences from Remotion 5.0 on by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6566
* `@remotion/renderer`, `@remotion/cli`: Migrate `pixel-format` and `browser-executable` to options system by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6561
* `@remotion/renderer`: Migrate more options to the new options system by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6562
* `@remotion/renderer`, `@remotion/cli`: Migrate `--user-agent`, `--disable-web-security`, `--ignore-certificate-errors` to options system by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6564
* `@remotion/renderer`: Convert concurrency to a proper AnyRemotionOption by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6569
* `@remotion/renderer`: Allow override of fps and durationInFrames by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6573
* `@remotion/studio`: Disallow selection on the timeline by @tiwariaayu in https://github.com/remotion-dev/remotion/pull/6571
* `@remotion/studio`: Better handling missing module by @tiwariaayu in https://github.com/remotion-dev/remotion/pull/6559
* `@remotion/design`: Fix icon alignment in Button rendered as anchor by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6556

## Templates
* `template-vercel`: Use never-expiring sandbox snapshots by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6578
* `template-recorder`: Fix Vite peer dependency conflict by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6585

## Docs
* Document browser support requirements for client-side rendering by @samohovets in https://github.com/remotion-dev/remotion/pull/6568
* Add audio variant to tag switching snippet by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6574
* Fix docs build warnings (broken anchors, license prop) by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6575
* Add missing crossOrigin prop docs to Html5Audio by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6577
* Document loop prop behavior during fallback by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6584

## Internal
* Parallelize twoslash type-checking with pre-warm script by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6553
* Upgrade to new Shiki Twoslasher by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6560
* Increase frame accuracy test timeout and limit concurrency by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6565
* Remove --experimental-cli flag from prettier by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6579
* Parallelize template publishing by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6580
* Revise acknowledgements and contributor statistics by @MehmetAdemi in https://github.com/remotion-dev/remotion/pull/6581

**Full Changelog**: https://github.com/remotion-dev/remotion/compare/v4.0.424...v4.0.425