Legacy AVI files go through FFmpeg WASM for maximum compatibility.
or choose a file from your device
Legacy AVI files go through FFmpeg WASM for maximum compatibility. Justvert keeps this page focused on one format so you can convert into or out of AVI without hunting through a long list of obscure options.
The Strategy Engine still inspects the source. Compatible H.264 streams remux. Hardware-friendly transcodes use WebCodecs. Legacy containers fall back to FFmpeg WASM.
Stay on the same job, or jump to a nearby format change.
A AVI converter changes a media file into or out of the AVI format. On Justvert you drop a file, pick AVI or a related output, and convert in the browser.
The AVI converter accepts common video and audio inputs such as MP4, MOV, WebM, MKV and AVI when the source is a media file. Use Auto detect if you are unsure of the input format.
No. Conversion runs locally in your browser. The chosen file is read on the page, processed by remux, WebCodecs or FFmpeg WASM, then written back with a WritableStream or a download. Source files are not uploaded to a Justvert conversion server.
No. Justvert is an online video converter. Open a modern web browser, drop a file, and convert. There is no desktop app or browser extension to install.
It can, if the file has to be re-encoded. Compatible H.264 plus AAC streams can be remuxed into MP4 without touching the pictures or the sound. WebCodecs and FFmpeg paths re-encode and may introduce some quality loss depending on the source and output size.
AVI is a legacy container with many possible codecs. Justvert sends those files through FFmpeg WASM so the output is a modern, playable MP4.