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Please Read! Two Limitations of CamStudio -- Max File Size=2GB and Full-Motion Recordings
CamStudio was originally intended for recording short screencasts of tutorial-style content, with the video having little motion, consisting mainly of program screens, with a microphone recording of a narration included if desired.
It always has been limited by its being written using the AVI 1 specification, which hampers us in that we are limited to a 2-gigabyte recorded file size. Over 2-gigabytes and CamStudio will crash without finishing combining the audio and video, and will leave un-keyed raw video behind that is corrupted.
Got that? There is a 2-GB file size limitation. You cannot go over that size, and there is no warning mechanism besides the filesize reading in the recording window -- and even that is approximate. I HAVE trusted it, though, and managed to record over 3 hours of webinar content using Jawor's Xvid at a quality=1 setting at 720p (1280X720), with MCI 16-bit, 44MHz PCM audio. However, webinar content has very little motion, and I recorded at capture frames every set to 100 and playback rate set to 10, with the set keyframes every setting at its maximum of 200 ms. This will look terrible for any full-motion video!
Full motion presents challenges. Though Xvid seems to work somewhat well, it apparently drops many frames, even when it is pushed with low numbers for the capture frames every setting and high playback rates (like 5/200). This is still being experimented with by others here, but any success you've had with CamStudio settings and codec settings in combination would be welcome news to post here. The issue is that attaining decent ACTUAL capture rates is a challenge on any but the most powerful machines. Even my 2.6GHz quad-core 64-bit machine does not do well in my experiments.
There are other limitations, but those are the two most glaring ones. Any comments or solutions are welcome!