AVI is a container that may hold DivX, Xvid, MJPEG, PCM, MP3, or other codecs. Use the dedicated AVI to MP4 converter to create an MP4 for browser, phone, and Apple playback, with H.264/AAC re-encoding when the source streams require it.
AVI is a Microsoft container, not a codec; AVI files may contain DivX, Xvid, MJPEG, DV, H.264, PCM, MP3, or other streams.
What this converter actually supports
Convertr uses the deployed FFmpeg toolchain for published audio and video routes. A container such as MP4, MOV, MKV, AVI, or WebM can hold different codecs, so the file extension alone does not guarantee that a particular player will accept the contents.
Convert AVI to MP4 for broad modern playback or to MOV for selected editing workflows.
The public upload limit is 1 GB. Convertr does not reduce dimensions, duration, resolution, or output quality merely to manage worker load.
Quality and format limits
Keep the original dimensions and frame rate unless you intentionally need a smaller result. Remuxing compatible streams avoids re-encoding; changing codecs is lossy, so repeated conversions should be avoided.
Some AVI timing, subtitle, and variable-frame-rate features do not map cleanly to newer containers.
Published AVI inputs
These links come from the active conversion catalog, not from a generic list of possible formats.
Check that the file opens in its original application, is not encrypted or DRM-protected, and really matches its extension. A damaged header, unsupported internal codec, missing linked asset, or mislabeled file can fail even when AVI is generally supported. Try a different published target only when it fits your goal; changing the extension by hand does not convert the file.