![Each attempt to view a video on a particular site I get this message," Video format or mime not supported". How do I fix this? | Firefox Support Forum | Mozilla Support Each attempt to view a video on a particular site I get this message," Video format or mime not supported". How do I fix this? | Firefox Support Forum | Mozilla Support](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2017-01-21-20-42-34-a28e4a.png)
Each attempt to view a video on a particular site I get this message," Video format or mime not supported". How do I fix this? | Firefox Support Forum | Mozilla Support
Enable MP4 (H.264 + AAC) HTML5 video in Firefox on Windows XP without Flash - Page 25 - Browsers working on Older NT-Family OSes - MSFN
Enable MP4 (H.264 + AAC) HTML5 video in Firefox on Windows XP without Flash - Page 5 - Browsers working on Older NT-Family OSes - MSFN
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Enable all video codecs on Firefox (MSE & h.264, Media Source Extensions, MSE & WebM VP9, h.264) - YouTube
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