![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://user-media-prod-cdn.itsre-sumo.mozilla.net/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
![No video with supported format and MIME type found." on videos native interface can play · Issue #1590 · nolanlawson/pinafore · GitHub No video with supported format and MIME type found." on videos native interface can play · Issue #1590 · nolanlawson/pinafore · GitHub](https://user-images.githubusercontent.com/1385527/66963678-7f38bf80-f031-11e9-92fd-1ea75401a2e3.png)
No video with supported format and MIME type found." on videos native interface can play · Issue #1590 · nolanlawson/pinafore · GitHub
![On some sites I get message: Video format or MIME type is not supported | Firefox Support Forum | Mozilla Support On some sites I get message: Video format or MIME type is not supported | Firefox Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2016-05-04-14-29-20-44a50f.png)
On some sites I get message: Video format or MIME type is not supported | Firefox Support Forum | Mozilla Support
![Firefox not supporting video format or mime type for CW network only (so far) | Firefox Support Forum | Mozilla Support Firefox not supporting video format or mime type for CW network only (so far) | Firefox Support Forum | Mozilla Support](https://secure.gravatar.com/avatar/00c6eee106c5464747fd7f0026ec505c?s=200&d=https%3A//static-media-prod-cdn.itsre-sumo.mozilla.net/static/sumo/img/avatar.png)