![Can't play .mov file in chrome and Edge But Firefox is Working - no compatible source was found for this media - Univention Help Can't play .mov file in chrome and Edge But Firefox is Working - no compatible source was found for this media - Univention Help](https://help.univention.com/uploads/default/original/2X/2/279f8e5ee6b1730914107cd2cf7967290b174062.png)
Can't play .mov file in chrome and Edge But Firefox is Working - no compatible source was found for this media - Univention Help
![Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2017-12-26-16-21-19-e0ed0a.png)
Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support
![Twitter says "The media could not be played". When I'm trying to watch some media files in Twitter. Only fails in firefox, in chrome it works. : r/ firefox Twitter says "The media could not be played". When I'm trying to watch some media files in Twitter. Only fails in firefox, in chrome it works. : r/ firefox](https://external-preview.redd.it/uKLV8fICgH4L2Ysw6YBhWgvRsnaWQWvVb7YvC70JMlM.jpg?auto=webp&s=de9f0134dd12b8c6be7b93c5ac34a17c72ffa942)
Twitter says "The media could not be played". When I'm trying to watch some media files in Twitter. Only fails in firefox, in chrome it works. : r/ firefox
![The media could not be loaded, either because the server or network failed or because the format is not supported." : r/firefox The media could not be loaded, either because the server or network failed or because the format is not supported." : r/firefox](https://i.redd.it/x27fohoviq071.jpg)
The media could not be loaded, either because the server or network failed or because the format is not supported." : r/firefox
![Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2017-12-26-16-21-31-658a5a.png)
Why do I get a message "The media could not be played" at some websites? | Firefox Support Forum | Mozilla Support
![Videos on some websites wont work but do work with Chrome? | Firefox Support Forum | Mozilla Support Videos on some websites wont work but do work with Chrome? | Firefox Support Forum | Mozilla Support](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2019-03-25-00-24-34-4d630a.png)