Convert Video Format

New

MOV, MKV, WebM, AVI → MP4 (or back) — instant and lossless when the streams already match

File

Drop files here or click to browseMP4, MOV, WebM, MKV, 3GP — files stay on your device, nothing is uploaded

If the streams are already H.264/AAC (e.g. a phone MOV or an MKV) only the container changes — seconds, no quality loss. Otherwise it is re-encoded.

ffmpeg runs inside your browser — large files take time and memory. Works best on clips under ~200 MB.

Result

Add a file, set the options, then run

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