I get the following error on playing video in FireFox: "Error Loading Media: File Could Not Be Played"
For example, i am trying to play video on jwPlayer.com start page in Firefox (37.0.1). This can be replicated on browserstack.com on windows 7.
How can i fix this issue? Is it related to operating system?
No problem here - same version of Firefox, same version of Windows. Try disabling all add-ons in the browser.
(Ignore browserstack. Despite what they say, you're actually NOT running the real browser in the real operating system.)
Hello,
Do you happen to have a sample URL we can look at with the problem?
Thank you
The OP is seeing the failure on the JW Player home page, so it's clearly not an encoding problem or a MIME type problem (the usual suspects).
I am opening http://www.jwplayer.com/ in firefox and see the issue in video.
Well, the issue is clearly on your end - browser add-ons, maybe a company firewall, etc. There is no problem with JW Player (any version) and Firefox.
MisterNeutron, i have not any plugins installed. Also not all people in my company experiencing the issue, so company firewall also cannot cause the issue.
The fact that only some users in your company are having a problem is just more proof that the problem is on your end. We can't examine your PC's to figure out what the problem is.
MisterNeutron, not only user from our company experiencing the issue. My friends around the world also experiencing the issue.
I still have the issue.
I am sorry for annoying, but still can anybody help?
Hello,
I am seeing all videos fine in Windows 7/8.1 and Firefox. Have you tried this on another machine?
Randy
On a machine that's showing this problem, try resetting Firefox to its defaults - the Help menu, Troubleshooting information, Refresh Firefox.
Randy Le'Moine, Could you please explain why i see the issue on BrowserStack when i set OS to Win7 and browser to Firefox?
Also could you please verify is my issue is the same as descibed here: https://support.mozilla.org/en-US/questions/1014854
P.S. I have tried it on about 10 machines and see the issue on 3 of them. Win 7 or Windows Server 2008 R2 are installed on it.
Ignore browerstack. It's showing you an emulation, no matter how much they protest to the contrary. I've seen browserstack fail with pages that work with the REAL browser/OS combination.
So, what's different about the three machines on which it's failing? It can't be a video encoding problem, or you'd see the error on all 10 machines. It can't be a MIME type problem - ditto. The script is certainly the same, no matter what machine is running it. There's SOMETHING different about the browser setup on those three machines.
Have you tried resetting Firefox to defaults on at least one of the failing machines? That might be instructive.
Upon reflection, I don't think this is actually a browser issue - it's an OS issue. Firefox doesn't provide its own codecs for handling a <video> tag, and all JW Player is doing is feeding the video to the browser's <video> tag. For licensing reasons, Firefox is relying upon the codecs present in the OS. An interesting quote from Mozilla:
"Firefox ... supports the format [mp4] in some cases, but only when a third-party decoder is available, and the device hardware can handle the profile used to encode the MP4."
And I don't think it's ever going to work on Win Server 2008. Firefox supports native MP4 only on WinVista, Win7, Win8, and OSX. On any other OS, JW Player should drop back to Flash, but of course that means that Flash has to be available.
MisterNeutron, i have tried resetting Firefox to defaults on one of the failing machines. Unfortunately, this does not helps.
Here is image with my OS versoin
http://s9.postimg.org/4h6jc3igf/OSversion.png
I have mentioned browserstack just as an example of how the issue reproduces.
I have the same issue in OSX with firefox 37.0.1. When i click play button jwplayer show a message: "Error Loading Media: File Could Not Be Played". This problem not happen with all mp4 videos that i have.
Could be a problem with moov atom?
How can i fix this issue?
Try running a "problem" MP4 through Handbrake - default settings, plus check "Web optimized." That will quickly tell you whether it's an encoding problem. http://handbrake.fr/
But your problem is not the same as the original poster's. If the problem is showing up on the JW Player home page, or is showing up on some machines, but not others, it simply can't be an encoding problem - it's got to be something about those specific PC's. I suspect that Windows is missing the needed codecs (which Firefox has to use), or those machines have ancient graphics hardware that can't handle it.
Hello Vadiminter9,
It may be a good idea to run a Windows Update just to ensure your machine is up to date. This may further explain the sporadic nature of some users running into the issue while others do not. I assume there are no local security settings you have enabled that are interfering with this as well? If you try this on another machine within your environment can you replicate the issue?
Kindly,
Randy
