FixMpeg is a simple front end to ffmpeg that will convert the audio format and sample rate in an mpeg2 file (.mpg), help you improve the sound in MPG files. It will not touch the video, but only convert the audio in a file if it is not correct to stereo MPEG1 layer 2 audio (typical uses are to convert from the wrong sample rate -- 44.1kHz to 48kHz or to convert AC3 audio).

The license of this software is Free, you can free download and free use this video converter software.