This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Denne tråden ble arkivert. Still et nytt spørsmål dersom du trenger hjelp.

Firefox downloading .mp4 rather than playing

  • 6 svar
  • 11 har dette problemet
  • 3 views
  • Siste svar av daksh85

daksh85
daksh85
more options

I have Firefox 45.0.1 installed on windows 2012 server, and whenever I try playing .mp4 on Firefox, it downloads .mp4 rather than playing it on browser. Based on reading few posts on same issue, I did set the following setting "media.play-stand-alone" to true, and "media.windows-media-foundation.enabled" to true. But it still Firefox is downloading files rather than playing.

Can anyone please let me know what settings, and files have to be tuned in Firefox in order for it to play .mp4 on browser rather than playing?

I have Firefox 45.0.1 installed on windows 2012 server, and whenever I try playing .mp4 on Firefox, it downloads .mp4 rather than playing it on browser. Based on reading few posts on same issue, I did set the following setting "media.play-stand-alone" to true, and "media.windows-media-foundation.enabled" to true. But it still Firefox is downloading files rather than playing. Can anyone please let me know what settings, and files have to be tuned in Firefox in order for it to play .mp4 on browser rather than playing?

All Replies (6)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Did you save the MP4 files to your computer and try to play them locally or are they hosted on internet?

With files hosted on internet it depends on how the server sends the files.

daksh85
daksh85 Eieren av spørsmålet
more options

The file is being played via interner using amazon cloudfront. It plays well on chrome but when played via firefox it asks for download on windows server.

Oxylatium
Oxylatium
more options

Is Firefox able to play the MP4 video locally? (after downloading it)

daksh85
daksh85 Eieren av spørsmålet
more options

@oxyOxylatium said

Is Firefox able to play the MP4 video locally? (after downloading it)

It's not able to even play Video locally. I save the file, and ask it open with Firefox but it gives me the same dialog asking "What should firefox do with this file" .. Attached the image

But the file plays fine with Chrome browser

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder:

daksh85
daksh85 Eieren av spørsmålet
more options

cor-el said

Rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions. You can use this button to go to the current Firefox profile folder:

I removed all entries in mimeTypes.rdf file in the Firefox profile folder to reset all file actions, but still I am seeing the same behavior. Firefox is not able to play video locally too. I save the file, and ask it open with Firefox but it gives me the same dialog asking "What should firefox do with this file