MythTV is a nice package, but unfortunately, it's missing easy exporting functionality. We have nuvexport to export to several different formats, but it's a shame that we can record in MPEG4, but to create an MPEG4 AVI file, we need to re-encode all the video. Since almost all video editing software tends to use AVI, this should be a good thing.
So, without much help from the powers that be (who told me it would be nearly impossible), I have ventured into creating some NUV tools. I have created my own NUV decoding code based on the formats.h header file from myth, and have created the rest of the code myself. This means that any massive bugs in the NUV code in MythTV may well become obvious because of my separate implementation.
Currently nuvtools includes: