MP4 → AVI / online converter

MP4 to AVI Converter

Convert an MP4 video to AVI so it plays on old computers, players and legacy software.

01 / how to

How to convert MP4 to AVI

01

ADD YOUR MP4

Drop the MP4 file into the box above or choose it from your device.

02

CONVERT TO AVI

AVI is already selected. Press Convert and wait a few seconds.

03

DOWNLOAD

Save the finished AVI file. The original is deleted from our server.

02 / what you get

What happens to your data

Kept

  • H.264, H.265 (HEVC, the iPhone and Android default) and other common codecs are read
  • MPEG-4 (Xvid-compatible) video with MP3 audio, which plays on old computers, DVD players with DivX/Xvid support and legacy software
  • The original resolution and frame rate are kept
  • A phone video recorded sideways or upside down is turned the right way up

Good to know

  • Audio is stereo MP3, and the file is usually much larger than the same video as MP4.
  • The video is re-encoded, which is slightly lossy. Only one video track and one audio track are kept; extra audio tracks and subtitles are left out.
  • A width or height that is an odd number of pixels is trimmed by one pixel, because video encoders need even sizes.
  • HDR video (for example from a recent iPhone) is converted to normal SDR colors, and 10-bit video becomes 8-bit, so it plays everywhere.
  • Audio with more than two channels (5.1 surround) is mixed down to stereo.
  • Files up to 150 MB are accepted. Long or very high-resolution videos can take several minutes, and a conversion that runs past about 4 minutes is stopped with a message.

03 / formats

MP4 vs AVI

MP4

An MP4 file is the most universally supported video container — plays on every device, browser, and platform. The default choice when you're not sure what format to use.

Used in: Universal playback · Sharing · Web video

AVI

An AVI file is a video container from the early 1990s, one of the oldest still in circulation. Still shows up in old archives, but rarely produced new today.

Used in: Old video archives · Legacy software