Free video converters for converting MPG to 3GP or MP4 are often limited in functionality, with many only allowing partial conversions unless the software is purchased. YASA is mentioned as a reliable option for converting videos, particularly for iPod use. Searching for "freeware video converter" can yield various full-version software options. Additionally, "Digit-Your Technology Navigator" magazine previously offered a free tool called Plato for converting MPEG to 3GP, although its compatibility with MP4 is uncertain.