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.

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

WEBM videos don't play properly.

  • 6 balasan
  • 5 ada masalah ini
  • 272 paparan
  • Balasan terakhir oleh AliceWyman

more options

I am trying to play a WEBM video in Firefox, but the video will only play about halfway through before it just stops for no apparent reason. I made sure the proper WEBM codec was in place, but it hasn't been helping. What's going on?

Thanks in advance!

I am trying to play a WEBM video in Firefox, but the video will only play about halfway through before it just stops for no apparent reason. I made sure the proper WEBM codec was in place, but it hasn't been helping. What's going on? Thanks in advance!

Penyelesaian terpilih

Does this happen with all WebM videos or only on specific websites?

Start Firefox in Safe Mode 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).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.

Also make sure that your security software (firewall, anti-virus) isn't blocking the videos.

Baca jawapan ini dalam konteks 👍 1

All Replies (6)

more options

Penyelesaian Terpilih

Does this happen with all WebM videos or only on specific websites?

Start Firefox in Safe Mode 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).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.

Also make sure that your security software (firewall, anti-virus) isn't blocking the videos.

more options

Please furnish a link to any WEBM video that doesn't play properly for you in Firefox.

For example, does the embedded webm video at http://www.mozilla.org/firefox/video/ play OK?

What about this link? http://videos-cdn.mozilla.net/brand/Mozilla_Firefox_Manifesto_v0.2_640.webm

What about the embedded webm video at http://camendesign.com/code/video_for_everybody/test.html

What about this link? http://clips.vorwaerts-gmbh.de/big_buck_bunny.webm

more options

After a bit of extra troubleshooting, I found out that the problem was something completely unrelated to Firefox and was, instead, a problem with the video I was trying to play. Thanks for your help, though; I really appreciate it!

more options

I am using Firefox 22.o currently on beta channel. I am using Windows 7 64 bit

I am trying to play the following URL (to see whether webM is working or not)

http://www.flumotion.com/demosite/webm/

Getting an error as Video format or MIME type not supported

Any pointers will be appreciated

more options

rktenneti, The video that is supposed to be on that demosite should be at http://195.10.10.210/flumotion/videodemo/high.webm

However, that link results in an error,

No Such Resource
File not found.

Contact the webmaster. If you need more help you should ask a new question since this one is solved (problem with the video).