One problem that I encountered when posting screen capture videos resulted from incompatible codecs. Below are two videos: the top video shows the problem and the bottom video is rendered correctly.
I captured and encoded the video in CamStudio using the CamStudio Lossless Codec v1.0. However, my video rendering software (Sony Vegas Movie Studio Platinum Edition) didn’t know how to decode that codec. That’s what caused the error. The solution was easy: I changed my compressor to Microsoft Video 1. The image below shows the codec that caused the problem.

