Flash/Shockwave Crashes when Viewing Ustream.tv [IPCamera_MJPEG.ax]
So, after about a month of wrestling with Ustream.tv and any other web site that imbeds interactive Adobe Flash or Shockwave videos, I decided I should actually take a good look at the error reports that Firefox and Chrome create on crash. I discovered that a module called IPCamera_MJPEG.ax was causing an issue. Normally, IPCamera_MJPEG.ax is found in C:\Windows\system32, but mine wasn’t there. I read on Ustream’s official forums, though, that other encoders and camera capture utilities from other cam streaming sites will cause an issue. One user reported the encoder for Justin.tv was the issue. Mine? The Camstreams encoder was the culprit. Once I uninstalled it (I wasn’t using it anyway), Ustream.tv behaved like an angel!
Just in case your issue isn’t with Camstreams or any other encoder, here’s some other ideas:
- Windows Media Encoder (the Camstreams encoder is based off of WME, so WME might cause an issue too)
- Outdated or corrupted video drivers. Update or reinstall the drivers any chipset or add-on graphics card you have.
- Outdated Flash or Shockwave. Completely uninstall Flash and Shockwave. Adobe provides uninstall programs to clean all traces. Reinstall.
- Other browser plugins. Though, less likely, it is possible that other plugins in your browser of choice are causing conflicts. Disable all of them, and renable them one-by-one while reloading Ustream (or any other site giving you trouble) to catch the culprit.
- format c:
(disclaimer: It’s a joke ^…. I don’t want to be responsible for a wiped drive!)

March 14th, 2009 at 11:53 am
If that file doesn’t work, try looking for BtwVdpCapFilter.dll. This is a file used for sharing webcams over bluetooth or something dumb like that. You can rename it without problems
August 20th, 2009 at 10:02 pm
I’m having the same issue w/ vista 32bit
i can’t find either file on system32
what do you mean by camstreams encoder…a little more specific please?
August 21st, 2009 at 12:02 am
The Camstreams encoder is the program provided by camstreams.com to use with their service. If you don’t know who Camstreams is, then that’s not the problem you’re having.
Try removing any programs the utilize Flash to broadcast video. If you’ve downloaded any browser “helpers” or “viewers” to view Flash video, try untinstalling those. If you’ve ever downloaded any programs from Ustream, Stickam, Camstreams, Justin.tv, or any other of the dozens of video broadcasting sites, try uninstalling their respective programs they use to broadcast.
August 22nd, 2009 at 12:16 am
thanks for the quick response…how would i remove the justin.tv program?
August 22nd, 2009 at 12:53 am
I finally fixed it…I took the initiative to install the Camstreams encoder…then renamed the ax file restart…now it works
September 20th, 2009 at 4:05 am
I renamed BtwVdpCapFilter.dll and now ustream seems to be working… aswesome!
September 20th, 2009 at 9:15 am
Great! I’m glad it worked out!