AVI to MP4 Converter

The Decline of AVI and Rise of MP4

AVI was introduced by Microsoft in 1992. It was revolutionary at the time, but it wasn't built for the internet age. It lacks native support for modern compression techniques like B-frames or variable bitrates, which makes files unnecessarily large.

MP4 is the modern successor. It supports high-efficiency codecs (H.264/H.265) that can deliver better quality at half the file size.

By converting AVI to MP4, you aren't just changing the file extension; you are likely upgrading the underlying video stream to be more efficient and compatible.

Solving the "Interleave" Problem

AVI stands for "Audio Video Interleave". It stores audio and video chunks next to each other in the file. While simple, this creates overhead.

• The Benefit: Converting to MP4 removes this overhead, allowing for "Fast Start" metadata that lets video begin playing on the web instantly, before the whole file is downloaded.
• The Quality: MP4's AAC audio codec is also far superior to the MP3 or PCM audio typically found in old AVI files, offering clearer sound at lower bitrates.