Fix “This video format is not supported” on YouTube TV

Setting up a new computer is bliss — no old, unused apps and the machine performs much better than the previous. Unfortunately, you may encounter new problems based on the new hardware. One such issue I encountered with my new MacBook was a “This video format is not supported” message when I went to YouTube […]
The post Fix “This video format is not supported” on YouTube TV appeared first on David Walsh Blog.

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Fix “This video format is not supported” on YouTube TV

David Walsh on
November 17, 2025

Setting up a new computer is bliss -- no old, unused apps and the machine performs much better than the previous. Unfortunately, you may encounter new problems based on the new hardware. One such issue I encountered with my new MacBook was a "This video format is not supported" message when I went to YouTube TV.

Not being able to watch my favorite live show is a real problem. After a bit of research, I found the solution to the "This video format is not supported" error message. To solve this problem:

- Open your browser settings and do a search for DRM
- You should see reference to Widevine, a form of DRM
- Enable this Widevine setting
- Restart your web browser

Enabling Widevine within your browser will make your YouTube TV video feed work properly. Better than needing to install a codec like the good old days, right?

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[Image: Request Metrics real user monitoring]

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[Original source](https://davidwalsh.name/fix-this-video-format-is-not-supported-on-youtube-tv)