Convert AVI to MP4

Old camera and DivX/Xvid AVI files often will not play on phones. Convert them to MP4 here — slowly, but without uploading.

Drop a video here, or click to choose

How to convert AVI to MP4

AVI is an old container that can hold DivX, Xvid, MJPEG or other codecs. Browsers cannot play most of them, so FFmpeg unpacks them first.

Expect roughly 40–80% of the video length on a PC, depending on resolution. Phones are slower.

MP4 with H.264 is usually much smaller than an old AVI at similar quality.

Why do my AVI files not play on my phone?

Phones support MP4 with H.264, but not the old codecs AVI files usually use. Converting fixes that.

Does it work for camcorder AVI files?

Usually yes. FFmpeg reads most AVI codecs, including DV and MJPEG.

Is there a size limit?

There is no fixed limit, but files over about 1 GB may stop because the work happens in browser memory.

Is my video uploaded?

No. Your AVI file stays on your device.

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