Free · WebM/MOV/MKV/AVI → MP4 · nothing uploads
Convert video to MP4
Screen recordings, downloads and camera files become a standard MP4 that plays on anything.
Why MP4/H.264 is still the answer
Newer codecs beat H.264 on pure compression, but compatibility is the feature that matters when you're sending a file to someone else's device. H.264-in-MP4 decodes in hardware on essentially everything made in the last decade — phones, TVs, browsers, editing apps, chat clients. When a video "doesn't work", converting to this combination is the fix nine times out of ten.
Frequently asked questions
- Which formats can I convert?
- Anything your browser's FFmpeg build can decode — WebM, MOV, MKV, AVI, M4V and more. The output is always MP4 with H.264 video and AAC audio, the most compatible combination there is.
- Why won't my WebM screen recording play in some apps?
- WebM is a web format; plenty of native apps and older devices don't decode it. Converting to H.264 MP4 fixes playback almost everywhere, which is exactly what this tool is for.
- Does converting lose quality?
- Conversion re-encodes, so technically yes — but at CRF 21 the difference is rarely visible. The output is often smaller than the input as a bonus.
- Is my video uploaded anywhere?
- No. VidClip runs FFmpeg compiled to WebAssembly inside your browser. The file is read from your disk into the page's memory, processed there, and saved back to your disk. There is no upload, no server queue, and no copy of your footage anywhere but your machine.
- Is there a watermark?
- Free video exports carry a small semi-transparent VidClip mark in the corner. Audio-only output (MP3) has no watermark. Pro ($4/mo or $79 once) removes the watermark, lifts the 200 MB file cap, and unlocks instant lossless trim and mute.