Bring old AVI clips into the modern era
AVI is a classic Windows video container you’ll find on old camcorder footage, downloads and archives. It’s poorly supported now — many phones, browsers, editors and streaming services won’t play it, or play it without sound. Converting to MP4 (H.264) produces a smaller file that works on virtually any device or app.
Mynify converts entirely in your browser, so your video is never uploaded to a server — unlike most “AVI to MP4” sites.
What to expect
The conversion re-encodes the video to H.264 with AAC audio for maximum compatibility. The ~30MB engine loads once (then cached), and larger files take longer since your device does the encoding — which is exactly why it stays private. The result plays on phones, computers, editors and TVs.
Free, unlimited, no signup, no watermark — your video never leaves your device.