**Environment:** Operating system: Windows 10 Firefox version: Firefox 142.0/146/148 **Steps to reproduce:** 1. Go to https://www.bellingcat.com/news/2025/12/03/mali-under-siege-tracking-the-fuel-blockade-crippling-bamako/ 2. Scroll down to "Attack on Sep 14". **Expected Behavior:** The video is displayed and can be played. **Actual Behavior:** Unsupported message displayed as a placeholder. **Notes:** - Reproduces regardless of the status of ETP - Reproduces in firefox-nightly, and firefox-release - Does not reproduce in chrome Created from https://github.com/webcompat/web-bugs/issues/193398
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**Environment:** Operating system: Windows 10 Firefox version: Firefox 142.0/146/148 **Steps to reproduce:** 1. Go to https://www.bellingcat.com/news/2025/12/03/mali-under-siege-tracking-the-fuel-blockade-crippling-bamako/ 2. Scroll down to "Attack on Sep 14" to the 2nd video. **Expected Behavior:** The video is displayed and can be played. **Actual Behavior:** Unsupported message displayed as a placeholder. **Notes:** - Reproduces regardless of the status of ETP - Reproduces in firefox-nightly, and firefox-release - Does not reproduce in chrome Created from https://github.com/webcompat/web-bugs/issues/193398