AVI to MP4

AVI files are usually old, and old AVI codecs are what modern players choke on. Converting solves playback and typically cuts the file size by more than half.

Runs in your browser // nothing is uploaded

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What survives the conversion

Derived from what each format is able to store, not from what the conversion promises.

Kept

Audio track
Metadata, which AVI could not store
Chapters, which AVI could not store

Lost

Nothing AVI carries is dropped by MP4.

Settings used

H.264 at CRF 23, preset veryfast. The old DivX, Xvid or MJPEG video is fully re-encoded, and the audio, commonly MP3 or uncompressed PCM, is re-encoded to AAC.

When not to convert

Not for archival footage where the original AVI is your only master. Keep a copy.

About these formats

Video

What is a MP4 file?

MP4 is a container rather than a codec: it usually holds H.264 video with AAC audio, which is the single most widely playable combination on the internet. It supports subtitles, chapters and multiple audio tracks, and streams well because metadata can sit at the front of the file.

Read the format guide

Common questions

Does converting AVI to MP4 lose anything?

Nothing this conversion can preserve is dropped. AVI files are usually old, and old AVI codecs are what modern players choke on. Converting solves playback and typically cuts the file size by more than half.

Are my files uploaded when I convert AVI to MP4?

No. The conversion runs in your browser tab, so the file is never transmitted and the page works offline once loaded.

What settings does FileOven use for AVI to MP4?

H.264 at CRF 23, preset veryfast. The old DivX, Xvid or MJPEG video is fully re-encoded, and the audio, commonly MP3 or uncompressed PCM, is re-encoded to AAC.

When should I not convert AVI to MP4?

Not for archival footage where the original AVI is your only master. Keep a copy.