Troubleshooting - Time and video size limits
There is a time limit for recording, which is 20 minutes.
There is also a file size limit of 2 gigabytes. Files that are larger than this will not play when they've been rendered out in Muvizu.
The problem is with the type of AVI file Muvizu:Play generates, its known as version 1.00 AVI. These type of video files have an internal limit of 2GB in size.
If you find yourself struggling to create your video within these limits the best thing to do is to split your video into lots of small parts. Usually a good practice is to record each camera shot as 1 video file and then, using the VideoJoiner or other video editor, join all these together into the finished article.