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

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

Why does Firefox 18.0.1 try to see the .m4b I'm trying to download as an .mp4?

  • 2 amsoshi
  • 1 yana da wannan matsala
  • 4 views
  • Amsa ta ƙarshe daga morpheus6879

morpheus6879
morpheus6879
more options

I'm trying to download an .m4b (Apple Audiobook format) file on my Macbook Pro (OS 10.8.2) with Firefox 18.0.1. When I do, Firefox opens a new tab like it's going to download the file, but then loads the m4b into what I assume is the Quicktime plugin for Firefox and starts playing it. When I mouse over the tab, the tip that pops up says:

"filename.m4b (video/mp4 Object)"

I tried it on my iMac (OS 10.8.2) running Firefox 17.0.1 and the file downloaded correctly as an m4b. What gives?

I'm trying to download an .m4b (Apple Audiobook format) file on my Macbook Pro (OS 10.8.2) with Firefox 18.0.1. When I do, Firefox opens a new tab like it's going to download the file, but then loads the m4b into what I assume is the Quicktime plugin for Firefox and starts playing it. When I mouse over the tab, the tip that pops up says: "filename.m4b (video/mp4 Object)" I tried it on my iMac (OS 10.8.2) running Firefox 17.0.1 and the file downloaded correctly as an m4b. What gives?

All Replies (2)

Gingerbread Man
Gingerbread Man
more options

In the Applications category of the Preferences window, check if you have an entry for video/mp4. If it's there, make sure it's not set to “Use QuickTime Plug-in (in Firefox)”.

morpheus6879
morpheus6879 Mai mallakar tambaya
more options

I tried that (just now). I have a Video-MPEG4 entry that I set to Always ask, and a QuickTime Player.app Document (video/mpeg), but none at all that have video/mp4.