MP4 to AVI converter
Make AVI videos for older players and software, on your own device.
or drop them here, or paste them
Nothing is uploaded.
This converter loads its engine (31 MB) from jsDelivr the first time. jsDelivr sees your internet address, never your file.
About MP4 to AVI
Most new devices prefer MP4, but older TVs, DVD and media players, car screens and some editing or presentation software still only accept AVI. This converter makes an AVI with Xvid-compatible video and MP3 sound, the combination those devices were built for.
It uses FFmpeg, the open-source video tool, running in your browser. The first time, FFmpeg's core, about 31 MB, downloads from jsDelivr, a public code library, and is kept for next time. Your video stays on your device the whole time.
Encoding happens on a single processor core, so a long video takes a while: roughly real time on a recent computer. Picture size and frame rate stay the same as the MP4. The AVI is usually somewhat bigger than the MP4, because the older video format is less efficient.
If your player is fussy about resolution, very old models often play only up to 720 by 576 pixels; shrink the video first in that case. Large files can run out of browser memory, so the converter suits clips and episodes better than full films.
Questions and answers
MPEG-4 Part 2 video marked as Xvid, and MP3 sound. Nearly every device that plays AVI handles this combination.
MP4s usually use H.264, which is more efficient than the older video format AVI players expect, so the same picture needs more data.
No. FFmpeg converts it inside your browser; only FFmpeg itself is downloaded.