DVDVob2Mpg fixes the mpeg stream and converts VOB/VRO files to MPG files. It is fast and causes no loss of quality! It does not re-encode the video and audio like many other applications do. Instead it re-multiplexes the existing video and audio while it fixes the MPEG program stream and headers, it calculates and applies correct timing and throws away bad video frames. Finally everything is puzzled back together to come to a very clean MPG file
No decoding and reencoding, which makes it very fast and the video stays identical. Only bad frames and dummy data are rejected plus the timing is fixed.