v4.0.440

remotion-dev/remotionv4.0.440Mar 25, 2026by JonnyBurger

AI Summary

Introduces support for the AV1 video codec and improves the `<Img>` component display in the studio while consolidating SSE connections for better multi-tab stability.

Key Highlights

  • Add AV1 codec support
  • `<Img>` shows thumbnails
  • Consolidate SSE connections to fix multi-tab hanging
  • Fix imprecise FPS when combining chunks

New Features

  • AV1 codec support

Full Release Notes

## What's Changed
* `@remotion/renderer`: Add AV1 codec support by @samohovets in https://github.com/remotion-dev/remotion/pull/6771
* `@remotion/renderer`: Fix imprecise FPS when combining chunks by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6908
* `@remotion/studio`: `<Img>` shows thumbnails by @tiwariaayu in https://github.com/remotion-dev/remotion/pull/6892
* `@remotion/studio`: Consolidate SSE connections to fix multi-tab hanging by @bskang-v6x in https://github.com/remotion-dev/remotion/pull/6887

## Docs
* Link Azure and Cloudflare guides from SSR overview by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6907

## Internal
* Scope CSS in promo-pages by @JonnyBurger in https://github.com/remotion-dev/remotion/pull/6909

**Full Changelog**: https://github.com/remotion-dev/remotion/compare/v4.0.439...v4.0.440