Convert AVI to MP4 Online Free in Browser
Upload video, audio and images — even all at once. Pick an output format and quality for each category, fine-tune the details if needed, and download the results as a single ZIP.
Drop files here
or
Video · audio · images — several at once is fine
Files
Input file is available as input. Specify the output filename at the end of the line (e.g. output.mp4).
Normal mode does not interfere with using your computer.
Frequently asked questions
How is this page different from the single-purpose tools?
The engine is the same. This page simply exposes every category and every setting at once — handy for mixed batches; the dedicated pages are quicker for one specific task.
Where do my files get uploaded?
Nowhere. All processing happens locally in your browser using FFmpeg.wasm — files never leave your computer.
Can I mix video, audio and images in one batch?
Yes — each category gets its own settings panel, and the results download together as one ZIP.