As mentioned earlier, VDubMod is a super-version of VirtualDub. Whereas VirtualDub is the rock foundation and offers the ultimate in stability, much of the development into new areas has gone into VDubMod.
If you can’t do something with VirtualDub, try VDubMod. An example is using an MPEG-2 source file. In VirtualDub you get an error message about there being no video frames in it. Try opening it in VDubMod.
Take the MPEG-2 example a step further. Put a DVD disc into your DVD drive, open a VOB file on it with VDubMod, and rip the video and audio to an AVI file.
This isn’t a guarantee. Each computer has many video and audio codecs on it that are needed to render or play audio and video files. The codecs run in the background. Sometimes ...