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Windows media player crashes every time i try to play a video recorded by Cam Studio

edited October 2014 in Support
I have watched all of the videos (more than once), I have read and re-read the FAQ, I have all settings (I am pretty sure) set properly yet every time I attempt to play the AVI on windows media player it crashes. I am using the Xvid MPEG4 codec.


  • This is quite rare. I imagine you are set to something standard like 1280x720 or 1920x1080, right?

    Do they play on VLC?

    Will YouTube accept it as an upload?

    Windows Media Player usually has no problems at all.

  • Terry, thanks for getting back to me. Yes, I had chosen 720 in the codec config. & 1280x720 in the region parameters of Cam Studio. I then decided to try the x264VFW codec. I had downloaded it several days ago, When I looked in the Compressor pull down, x264 wasn't there. I installed it again, restarted the computer, still not listed in the pull down. I just installed again. Still not in the pull down.

    In the meantime, I chose Microsoft MPEG-4 video codec V3. Everything seems to be working fine. I plan to create screencasts demonstrating Photoshop editing routines and would like them to look good at full screen. Is there any reason that I should not use this codec?

    Thanks for your help.
  • You likely succumbed to the temptation to download the 64-bit version of x.264vfw since you likely have a 64-bit computer. But CamStudio is a 32-bit program and can only "see" 32-bit codecs, so go get the 32-bit version and install that along with the other one. (If you are running 64-bit Windows Media Player - the only 64-bit player I know of - then it can use the one you already downloaded.)

    Glad you have the MS MPEG-4 V3 on your machine - it is supposed to be very good!

    When you get a few 32-bit codecs on your machine, you can compare the quality, but I started out making Photoshop tutorials, and I assure you that MS MPEG-4, Xvid and X.264vfw all look completely the same for such uses. Where they differ is for high-motion uses, with X.264vfw being the favored one for gamers recording their gameplay videos. (I would use OBS for that, though!)

  • johnmcbay - BTW - where did you get the Microsoft MPEG-4 V3 codec from? It is pretty rare to find nowadays.

    I found this odd piece of use-restriction info at Microsoft:
    I don't know if this applies to CamStudio - it does use the 2010 MS C++ Runtime Libraries, so it likely is ok.

  • Terry

    Thanks so much. I just created my first 5 minute video and uploaded it to Vimeo. It worked great at 720, next step 1080 and then SOUND.
  • Terry, I have no idea where it came from. When I opened Cam Studio it was one of the choices available for the compressor.
  • John,

    We're off and running! :-)

  • edited October 2014
    My own take on this codec is that it’s something of a trap for users who find it on the list of MPEG 4 options and never go on to try something better. It showed up with my Win 7 right of the box, so I included it in my test of codecs. On the plus side, the interface is dumbed down to the point of being very easy to use - just set the bitrate slider all the way up and you're ready to go. It produces very small files compared to other codecs and is not compatible with packed bitstream - both good. Problem is, the compression formula is very crude and produces a very “blocky” image with no appreciable motion anticipation. Bottom line for me is that this one is totally obsolete and an easy discard frm the list of usable codecs.

  • I just downloaded the following and all of my problems described above went away:
  • John,
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