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Why does Firefox work better if I disable Cisco OpenH264?

Posted

Videos embedded into webpages had started not playing for more than a couple of seconds. I could drag to a new part of the video and always the same thing. (No - it wasn't bufferering!)

BBC iplayer had the same problem.

I disabled the Cisco OpenH264 add-on and everything worked again.

I didn't turn it on so it must have happened in an upgrade. My settings are all straight out of the box - I'm not a computer expert - I use Firefox as it comes.

My question - is this normal? Have I solved my own problem or do I need OpenH264?

Thnaks, Andrew

Videos embedded into webpages had started not playing for more than a couple of seconds. I could drag to a new part of the video and always the same thing. (No - it wasn't bufferering!) BBC iplayer had the same problem. I disabled the Cisco OpenH264 add-on and everything worked again. I didn't turn it on so it must have happened in an upgrade. My settings are all straight out of the box - I'm not a computer expert - I use Firefox as it comes. My question - is this normal? Have I solved my own problem or do I need OpenH264? Thnaks, Andrew

Additional System Details

Installed Plug-ins

  • Simple plug-in that handles Citrix connection files
  • Provides information about the default web browser
  • Garmin Communicator Plug-in Version 4.0.4.0
  • The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser.
  • Displays Java applet content, or a placeholder if Java is not installed.
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Microsoft Office for Mac SharePoint Browser Plug-in
  • Shockwave Flash 16.0 r0
  • Adobe Shockwave for Director Netscape plug-in, version 12.0.3

Application

  • Firefox 35.0.1
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:35.0) Gecko/20100101 Firefox/35.0
  • Support URL: https://support.mozilla.org/1/firefox/35.0.1/Darwin/en-US/

Extensions

  • Evernote Web Clipper 5.9.1 ({E0B8C461-F8FB-49b4-8373-FE32E9252800})
  • Print Edit 13.8 (printedit@DW-dev)
  • TinEye Reverse Image Search 1.1 (tineye@ideeinc.com)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription:
  • adapterDeviceID: 0x 166
  • adapterDrivers:
  • adapterRAM:
  • adapterVendorID: 0x8086
  • driverDate:
  • driverVersion:
  • info: {u'AzureCanvasBackend': u'quartz', u'AzureFallbackCanvasBackend': u'none', u'AzureContentBackend': u'quartz', u'AzureSkiaAccelerated': 0}
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webglRenderer: Intel Inc. -- Intel HD Graphics 4000 OpenGL Engine
  • windowLayerManagerRemote: True
  • windowLayerManagerType: OpenGL

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
guigs 1072 solutions 11697 answers

OpenH264 allows mp4s with that codec play more smoothly. Do you have an example url where this is happening to make sure that this is not a file type compatibility issue.

If it helps in regards of performance, does it help on most sites that you view? Are you using Flash for these videos instead? Does it also happen in Safe Mode?Troubleshoot Firefox issues using Safe Mode

OpenH264 allows mp4s with that codec play more smoothly. Do you have an example url where this is happening to make sure that this is not a file type compatibility issue. If it helps in regards of performance, does it help on most sites that you view? Are you using Flash for these videos instead? Does it also happen in Safe Mode?[[Troubleshoot Firefox issues using Safe Mode]]