Fix videos on Firefox by p1gp1g · Pull Request #32497 · element-hq/element-web

p1gp1g · 2026-02-13T08:10:35Z

Videos are using cross-origin requests, and Firefox blocks them before passing to the service worker if the element doesn't have the crossorigin attribute to give CORS support

Fix #28354

This fix has been suggested by @grantm and suggested in Bugzilla too

Checklist

I have read through review guidelines and CONTRIBUTING.md.
Tests written for new code (and old code if feasible).
New or updated public/exported symbols have accurate TSDoc documentation.
Linter and other CI checks pass.
I have licensed the changes to Element by completing the Contributor License Agreement (CLA)

Videos are using cross-origin requests, and Firefox blocks them before passing to the service worker if the element doesn't have the crossorigin attribute to give CORS support

CLAassistant · 2026-02-13T08:10:43Z

All committers have signed the CLA.

dbkr · 2026-02-13T12:06:51Z

Oh, thanks for this, if this is the answer to make videos work through the service worker then fantastic.

* Fix videos on Firefox Videos are using cross-origin requests, and Firefox blocks them before passing to the service worker if the element doesn't have the crossorigin attribute to give CORS support * React needs camelCase attr names --------- Co-authored-by: David Baker <dbkr@users.noreply.github.com>

This PR contains the following updates: | Package | Update | Change | |---|---|---| | [vectorim/element-web](https://github.com/element-hq/element-web) | patch | `v1.12.10` → `v1.12.11` | --- ### Release Notes <details> <summary>element-hq/element-web (vectorim/element-web)</summary> ### [`v1.12.11`](https://github.com/element-hq/element-web/releases/tag/v1.12.11) [Compare Source](element-hq/element-web@v1.12.10...v1.12.11) #### 🦖 Deprecations - Remove UIFeature.BulkUnverifiedSessionsReminder setting ([#31943](element-hq/element-web#31943)). Contributed by [@andybalaam](https://github.com/andybalaam). - Remove unused function to auto-rageshake when key backup is not set up ([#31942](element-hq/element-web#31942)). Contributed by [@andybalaam](https://github.com/andybalaam). #### ✨ Features - Room list: update the visuals in order to have better contrast ([#32421](element-hq/element-web#32421)). Contributed by [@florianduros](https://github.com/florianduros). - Set history visibility to "invited" for DMs and new non-public rooms when creating a room ([#31974](element-hq/element-web#31974)). Contributed by [@langleyd](https://github.com/langleyd). - Remove server acl status/summaries from timeline ([#32461](element-hq/element-web#32461)). Contributed by [@langleyd](https://github.com/langleyd). - Update `globalBlacklistUnverifiedDevices` on setting change ([#31983](element-hq/element-web#31983)). Contributed by [@kaylendog](https://github.com/kaylendog). - Add badge for history visibiltity to room info panel ([#31927](element-hq/element-web#31927)). Contributed by [@richvdh](https://github.com/richvdh). #### 🐛 Bug Fixes - Default useOnlyCurrentProfiles to true ([#32524](element-hq/element-web#32524)). Contributed by [@dbkr](https://github.com/dbkr). - Keep custom theme active after reload ([#32506](element-hq/element-web#32506)). Contributed by [@florianduros](https://github.com/florianduros). - Update font format from 'ttf' to 'truetype' ([#32493](element-hq/element-web#32493)). Contributed by [@all-yall](https://github.com/all-yall). - Fix videos on Firefox ([#32497](element-hq/element-web#32497)). Contributed by [@p1gp1g](https://github.com/p1gp1g). - Use a dedicated FAQ/help entry for key storage. ([#32480](element-hq/element-web#32480)). Contributed by [@mxandreas](https://github.com/mxandreas). - Avoid showing two chat timelines side by side after a call ([#32484](element-hq/element-web#32484)). Contributed by [@robintown](https://github.com/robintown). - Update screenshot for reactive display name disambiguation ([#32431](element-hq/element-web#32431)). Contributed by [@aditya-cherukuru](https://github.com/aditya-cherukuru). - Fix Status Bar being unreadable when the user overrides the default OS light/dark theme. ([#32442](element-hq/element-web#32442)). Contributed by [@Half-Shot](https://github.com/Half-Shot). - fix: Remove state\_key: null from Seshat search results ([#31524](element-hq/element-web#31524)). Contributed by [@shinaoka](https://github.com/shinaoka). - Fix user pill deserialisation ([#31947](element-hq/element-web#31947)). Contributed by [@t3chguy](https://github.com/t3chguy). </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://gitea.alexlebens.dev/alexlebens/infrastructure/pulls/4209 Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net> Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

…213) This PR contains the following updates: | Package | Update | Change | |---|---|---| | [element-hq/element-web](https://github.com/element-hq/element-web) | patch | `v1.12.10` → `v1.12.11` | --- ### Release Notes <details> <summary>element-hq/element-web (element-hq/element-web)</summary> ### [`v1.12.11`](https://github.com/element-hq/element-web/releases/tag/v1.12.11) [Compare Source](element-hq/element-web@v1.12.10...v1.12.11) #### 🦖 Deprecations - Remove UIFeature.BulkUnverifiedSessionsReminder setting ([#31943](element-hq/element-web#31943)). Contributed by [@andybalaam](https://github.com/andybalaam). - Remove unused function to auto-rageshake when key backup is not set up ([#31942](element-hq/element-web#31942)). Contributed by [@andybalaam](https://github.com/andybalaam). #### ✨ Features - Room list: update the visuals in order to have better contrast ([#32421](element-hq/element-web#32421)). Contributed by [@florianduros](https://github.com/florianduros). - Set history visibility to "invited" for DMs and new non-public rooms when creating a room ([#31974](element-hq/element-web#31974)). Contributed by [@langleyd](https://github.com/langleyd). - Remove server acl status/summaries from timeline ([#32461](element-hq/element-web#32461)). Contributed by [@langleyd](https://github.com/langleyd). - Update `globalBlacklistUnverifiedDevices` on setting change ([#31983](element-hq/element-web#31983)). Contributed by [@kaylendog](https://github.com/kaylendog). - Add badge for history visibiltity to room info panel ([#31927](element-hq/element-web#31927)). Contributed by [@richvdh](https://github.com/richvdh). #### 🐛 Bug Fixes - Default useOnlyCurrentProfiles to true ([#32524](element-hq/element-web#32524)). Contributed by [@dbkr](https://github.com/dbkr). - Keep custom theme active after reload ([#32506](element-hq/element-web#32506)). Contributed by [@florianduros](https://github.com/florianduros). - Update font format from 'ttf' to 'truetype' ([#32493](element-hq/element-web#32493)). Contributed by [@all-yall](https://github.com/all-yall). - Fix videos on Firefox ([#32497](element-hq/element-web#32497)). Contributed by [@p1gp1g](https://github.com/p1gp1g). - Use a dedicated FAQ/help entry for key storage. ([#32480](element-hq/element-web#32480)). Contributed by [@mxandreas](https://github.com/mxandreas). - Avoid showing two chat timelines side by side after a call ([#32484](element-hq/element-web#32484)). Contributed by [@robintown](https://github.com/robintown). - Update screenshot for reactive display name disambiguation ([#32431](element-hq/element-web#32431)). Contributed by [@aditya-cherukuru](https://github.com/aditya-cherukuru). - Fix Status Bar being unreadable when the user overrides the default OS light/dark theme. ([#32442](element-hq/element-web#32442)). Contributed by [@Half-Shot](https://github.com/Half-Shot). - fix: Remove state\_key: null from Seshat search results ([#31524](element-hq/element-web#31524)). Contributed by [@shinaoka](https://github.com/shinaoka). - Fix user pill deserialisation ([#31947](element-hq/element-web#31947)). Contributed by [@t3chguy](https://github.com/t3chguy). </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://gitea.alexlebens.dev/alexlebens/infrastructure/pulls/4213 Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net> Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

Fix videos on Firefox

3a2c4e2

Videos are using cross-origin requests, and Firefox blocks them before passing to the service worker if the element doesn't have the crossorigin attribute to give CORS support

p1gp1g requested a review from a team as a code owner February 13, 2026 08:10

p1gp1g requested review from dbkr and florianduros February 13, 2026 08:10

github-actions bot added the Z-Community-PR Issue is solved by a community member's PR label Feb 13, 2026

p1gp1g mentioned this pull request Feb 13, 2026

FF: No video with supported format and MIME type found #28354

Closed

dbkr added the T-Defect label Feb 13, 2026

github-actions bot deployed to Netlify February 13, 2026 10:42 View deployment

React needs camelCase attr names

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github-actions bot deployed to Netlify February 13, 2026 11:50 View deployment

github-actions bot deployed to EndToEndTests February 13, 2026 12:01 View deployment

dbkr approved these changes Feb 13, 2026

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dbkr added this pull request to the merge queue Feb 13, 2026

github-merge-queue bot removed this pull request from the merge queue due to failed status checks Feb 13, 2026

Merge branch 'develop' into fix-firefox-video

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github-actions bot deployed to Netlify February 13, 2026 12:33 View deployment

github-actions bot deployed to EndToEndTests February 13, 2026 12:44 View deployment

dbkr added this pull request to the merge queue Feb 13, 2026

Merged via the queue into element-hq:develop with commit 226b260 Feb 13, 2026
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Fix videos on Firefox#32497

Fix videos on Firefox#32497
dbkr merged 3 commits intoelement-hq:developfrom
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