Quicktime won't play in firefox

Hi. I just made a movie and trailer that I put up on the web. My friend programmed the site. I used apple's compressor program to compress the video for web. I chose the quicktime 7 setting. The quicktime 7 setting in compressor seems to be compressing it into a .mov file. The movie plays fine in safari and internet explorer, but for some reson will not play in firefox.
Has anybody had a similar problem? Does anybody know why I can't get this movie to play in firefox?
Thanks a lot for the help.

The settings on firefox were fine. It turns out that I had to change my code from object top embed. That worked and got the video to play in firefox. But ironically now the sound only sometimes works in firefox. If it is not one problem it is another. lol If you have any insight you can share it would be greatly appreciated.
Thanks man.

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Wav files won't play in Firefox 22

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Is there a fix for this?
Is there any other plugins I can install which will play the wav files?

Thank you for your response Alice.
I checked about:plugins and I DO have audio/wav and audio/x-wav. It it QuickTime 7.7.1 I have.
In Firefox Preferences Applications Panel I do not seem to have the iTunes.Document audio/x-wav there, only the audio/wav and Waveform Audio.
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I have previously asked about this with my Webmail company. They knew nothing of this problem. I have now asked them for a second time now that I know that it is only THEIR wav sound that won't play. Other wav files play OK with Firefox 22.
I do not know what is at fault - Firefox 22, QuickTime or the Webmail site but for the past few days I have frequently switched between Firefox 22 and Firefox 21. Each time the New Email Notification wav sound works with Firefox 21 and doesn't with Firefox 22 so that makes me suspect that somehow Firefox 22 is at fault.
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I recently purchased QuickTime 7 Pro to convert avi files to mov files for editing on Imovie. However, QuickTime won't play the files. How can I get them to play and how can I convert them to mov files?

I recently purchased QuickTime 7 Pro to convert avi files to mov files for editing on Imovie. However, QuickTime won't play the files. How can I get them to play and how can I convert them to mov files?

I recently purchased QuickTime 7 Pro to convert avi files to mov files for editing on Imovie. However, QuickTime won't play the files. How can I get them to play and how can I convert them to mov files?
Both the AVI and the MOV file extensions refer to the file container and not the compressed data the file contains. Both are generic file containers in that each may contain any valid combination of audio and/or video data that is compatible with the codec component configuration of the system on which the file was created. On the other hand, whether a file is playback compatible, conversion compatible, and/or edit compatible depends on the data actually contained in the file container. So, you are basically dealing with two separate issues here—the container and what is inside it.
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In order to determine what compression formats wewre used in your AVI files you can
1) Try checking the Finder "Info" window,
2) Use the "Inspector", "Media Info", or "Properties" window of any player app that will open the file, or
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How do i change my quicktime player default back to quicktime 7 as my new quicktime won't play certain formats

how do i change my quicktime player default back to quicktime 7 as my new quicktime won't play certain formats

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Quicktime won't play my .mov files since I upgraded to Mavericks.

Quicktime won't play my .mov files, even those from an iPhone, since I installed Mavericks. "Tell Me More" doesn't tell me anything about a solution. Any suggestions?

What do I do?
Frankly, if you have deleted the original movie clips from your camera/camcorder and iPhoto, then it sounds as if you are up the proverbial creek without a paddle and there is nothing further that you can do.
Some facts:
For some reason, the movieclips are awful small (13-30 KB).
640 x 480
Codecs: H.264, AAC
While these facts are of little value without file duration information, as you yourself have already noted, the file sizes quoted are extremely small. A typical VGA H.264/AAC file of reasonable quality would normally have a combined total data rate in the 700 to 1,700 Kbps range depending on specific settings, profile, and level of the encoding software and could be even higher or lower depending on the quality levels required. Therefore, it is reasonable to assume that files in the 13 to 30 KB range only contain 104 to 240 Kbs and either have durations measured in fractions of seconds or do not actually contain enough data to be played. (E.g., the video data may be missing or the file is corrupted.) Thus, it is most likely that something was wrong with the workflow used to "export" your files to the external drive and when you ignored the fact that the files were not playing correctly, you closed the door on anything that you could do when you deleted the source files. (I.e., the normal workflow here is to copy the entire iPhoto library to the external drive, switch libraries, confirm the new library is working properly and only then delete the boot drive copy of the iPhoto library.)
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Quicktime won't play in Mozilla Firefox

Hi,
I recently installed a newer version of Quicktime, 7 I think, and now Quicktime items won't play in my Firefox. They did before I installed the new version, and things load just fine in Internet Explorer, but I really would like it to also work in Firefox.
I've fiddled with different settings in the Quicktime and my Internet Options, but nothing seems to work. I am by no means good at that sort of thing, so I hope I didn't mess anything up further.
Any ideas how to get it to work again?
Thanks so much!

The settings on firefox were fine. It turns out that I had to change my code from object top embed. That worked and got the video to play in firefox. But ironically now the sound only sometimes works in firefox. If it is not one problem it is another. lol If you have any insight you can share it would be greatly appreciated.
Thanks man.

Quicktime won't play on Safari or Firefox?

Recently I have noticed that I cannot play Quicktime movies from the Apple Movie Trailers website. All I seem to get is a blue Quicktime icon with a white question mark. Or when I try to download a movie trailer from the site it states I have a incorrect url?
The problem seems to have only recently developed? I have managed to play movies in those web browsers previously without any problems. When I play a saved Quicktime movie it plays without any problems. I am using Quicktime 7.6.4.
Looking at the previous discussions I have updated my Quicktime, Flipmac, Perian and Flash applications. Tried moving the QT plugins to my users plugins folders but to no avail?
Not sure what the problem is but it's driving me crazy and I'm sure previously I didn't update any software apart from Firefox? Firefox is 3.5.7 but the applications refuses to work in Safari as well?
Does anyone have any advice? Not sure I want to reinstall any OS X? Though I have heard people that restored their permissions have managed to get it working? Can anyone explain what that does and does it erase apps and files?
Thanks

Though I have heard people that restored their permissions have managed to get it working? Can anyone explain what that does and does it erase apps and files?
Repairing permissions is important, and should always be carried out both before and after any software installation or update.
Go to Disk Utility (this is in your Utilities Folder in your Application folder) and click on the icon of your hard disk (not the one with all the numbers).
In First Aid, click on Repair Permissions.
This only takes a minute or two in Tiger, but much longer in Leopard.
Background information here:
http://docs.info.apple.com/article.html?artnum=25751
and here:
http://docs.info.apple.com/article.html?artnum=302672
An article on troubleshooting Permissions can be found here:
http://support.apple.com/kb/HT2963
By the way, you can ignore any messages about SUID or ACL file permissions, as explained here:
http://support.apple.com/kb/TS1448?viewlocale=en_US
If you were having any serious problems with your Mac you might as well complete the exercise by repairing your hard disk as well. You cannot do this from the same start-up disk. Reboot from your install disk (holding down the C key). Once it opens, select your language, and then go to Disk Utility from the Utilities menu. Select your hard disk as before and click Repair.
Once that is complete reboot again from your usual start-up disk.
More useful reading here:
Resolve startup issues and perform disk maintenance with Disk Utility and fsck
http://support.apple.com/kb/TS1417?viewlocale=en_US
For a full description of how to resolve Disk, Permission and Cache Corruption, you should read this FAQ from the X Lab:
http://www.thexlab.com/faqs/repairprocess.html

Quicktime movie won't play in firefox

Hi. I just made a movie and trailer that I put up on the web. My friend programmed the site. I used apple's compressor program to compress the video for web. I chose the quicktime 7 setting. The quicktime 7 setting in compressor seems to be compressing it into a .mov file. The movie plays fine in safari and internet explorer, but for some reson will not play in firefox.
Has anybody had a similar problem? Does anybody know why I can't get this movie to play in firefox?
Thanks a lot for the help.

http://www.myexgirlfriendstv.com/movie.html
This is the web page for the movie. Here you can pull up the source code.
Thanks so much for offering to help me out.

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Jesus Christ, how tedious. Can I just revert to a previous Firefox somewhere in the 3.xxx range where everything worked just fine? I am MacBook Pro laptop. Are you sure you're giving me mac instructions and not PC instructions? This looks more like a PC fix than a mac fix. The exact same problem is happening on my girlfriend's mac computers. I may have to go back to Safari which works just fine and plays the MP3s. This is a very bad happenstance if Firefox is so screwy that everyone has to do all the crap listed above just to get an MP3 to play. This is something Firefox should fix instead of having all Firefox users be confronted with such a glitch. Bad Firefox, Bad Firefox!!!!!

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I come across this a lot, actually. I'm tired of having to switch to Firefox in order to view certain quicktimes. Here's a clip that won't play for me:
http://www.chartoonz.com/index.html
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Checking the forums, I found threads that point to using Streamclip. I tried it and got this message:
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MailOnline videos won't play in Firefox unless in safe mode although they're fine in Explorer.

It's for my mum, honest. Firefox 25, java and flash uptodate but the Mail Online videos won't play unless I start Firefox in safemode. A large white rectangle appears but nothing else.

You can try these steps in case of issues with web pages:
Reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.
*Hold down the Shift key and left-click the Reload button
*Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
*Press "Command + Shift + R" (Mac)
Clear the cache and cookies only from websites that cause problems.
"Clear the Cache":
*Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
*Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
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Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit)
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We host a ton of h.264 videos in the mp4 container displayed through JW Player. We had zero problems with Firefox 34 and earlier playing these videos, the video is H.264 and the audio is AAC, the whole thing is around 500 kbit/s.
They play fine on Firefox 34, Chrome and IE but after updating to Firefox 35.0 we get an error: "Error loading media: File could not be played".
We have found a fix to get them to work in the about:config, switching "media.fragmented-mp4.enabled" to false OR switching "media.fragmented-mp4.exposed" to false will allow our videos to play. Single file mp4's will also begin to download where before we would get a "Video can't be played because the file is corrupt."
Alternatively for Mac users if they just set media.apple.mp4.enabled to False it also works fine.
Non h.264 mp4 videos will play fine.
Here is a playlist that won't play: http://media.vineyardinstitute.org/other/vi_announcement/firefox-test.html
Here is the single video file: http://media.vineyardinstitute.org/other/vi_announcement/05_kingdom_theology.mp4
Is there anything I can change on either the playlist or the video files to get this to work? Why would the h.264 files that worked in Firefox 34 NOT work in 35? I will not be able to re-encode all of the videos, it would take me months. Is this a bug with Firefox?
Also I have tried this in safe mode, tried with every plugin deactivated, I have uninstalled Flash and the videos would not play as well as reinstalling a new version of Flash and a fresh copy of Firefox 35.0
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Thanks,
Kyle

Do you have H.264 codec enabled in the plugins list of Firefox?
Does this happen in the most recent version of JWplayer?
There was an error loading the media:
"Media resource http://media.vineyardinstitute.org/other/vi_announcement/05_kingdom_theology.mp4 could not be decoded. firefox-test.html
13:43:48.280 "Error playing media: " MediaError { code: 3 } jwplayer.js:11:373
13:43:48.280 "CAPTIONS([object Object])""
jwplayer("myElement").setup({
playlist: [{
image: "http://media.vineyardinstitute.org/other/vi_announcement/images/05_kingdom_theology.jpg",
sources: [
{ file: "http://media.vineyardinstitute.org/other/vi_announcement/05_kingdom_theology.mp4" }
title: "Kingdom Theology",
description: "A look at what makes VI theologically unique.",
height: 720,
listbar: {
position: 'bottom',
size: 240,
thumbs: 'false',
repeat: 'list',
width: 640,
You might also find better help with this error on the JWplayer support site:
*similar topic/error: [http://support.jwplayer.com/customer/portal/questions/6062663--error-loading-media-file-could-not-be-played-error-in-jw-player-6-while-playing-mp4-with-chrome-html5]
In that one there were two errors: needed a higher version of Flash installed and the codec issue. As you mentioned this had been narrowed down to the codec of the mp4 file. And this codec is added with the default cisco h.264 player. [https://gigaom.com/2014/10/14/h-264-support-arrives-in-firefox-thanks-to-cisco-but-h-264-web-videos-still-wont-play/]

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For a long time, there was a bug in the conversion of .flv's to .mp4 in the ffmpeg libraries. This caused any app that used ffmpeg to create non-standard .mp4 files. This bug has now been fixed and everything should work as normal. However, those older files that were not created according to the .mp4 standard won't play when they have an .mp4 extension.
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Certain youtube videos won't play in Firefox

Firefox 20.0.1, windows 7, flashplayer up to date.
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In addition to these symptoms, I've noticed that I can view these troubled videos on my cellphone just fine, but neither my XP or Win7 machine, which have all software updated can view. So if it was on youtubes side, it wouldn't work on my phone either.

Quicktime won't play in firefox

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