Convert MOV, AVI, MKV, FLV, WMV, WebM or GIF into MP4, or turn an MP4 into another format. Everything runs in your browser.
Quick answer: Choose your video, pick MP4 as the output and convert. MP4 with H.264 plays on virtually every device, browser and editor — and nothing is uploaded, because the conversion happens on your machine.
Open the MP4 Converter MOV · AVI · MKV · WMV · WebM · nothing uploaded
MP4 carrying H.264 video is the closest thing to a universal format. Phones, browsers, TVs, editors and messaging apps all handle it without a plugin, which is not true of MKV, FLV or WMV. If a file will not play somewhere, converting it to MP4 is almost always the fix.
The formats people convert away from tell the same story. WMV and AVI are Windows-era containers that modern phones refuse. FLV is a relic of Flash video. MKV is technically excellent and widely used for archives, but support outside dedicated players is patchy.
What conversion cannot do
Re-encoding never adds detail. A 480p clip converted to MP4 is still a 480p clip, and asking for a larger frame size only stretches the same pixels. Quality lost in the original encode is not recoverable by any converter, here or anywhere else.
What conversion does do is change the container and codec so the file plays where it needs to, and that is worth doing on its own terms.
Frequently Asked Questions
MOV, AVI, MKV, FLV, WMV, WebM and GIF. MP4 with H.264 is the format that plays on essentially everything, which is why it is usually the right destination for an old or awkward file.
Because every frame has to be decoded and re-encoded, and that work happens on your device rather than on a server. A minute of video is well over a thousand frames. The upside of the trade is that your footage never leaves your machine.
Yes — that keeps the audio track and discards the picture. It is the same tool, with MP3 chosen as the output.
Re-encoding is lossy, so some quality is spent. Converting from an already-compressed source such as WebM or a phone recording means a second generation of loss, which is usually invisible at normal viewing size but is real. Converting from a high-bitrate original is the cleanest path.
No account limit, but video is memory-hungry and the work is done in your browser, so very large files depend on your device. If a long clip struggles, trimming it first is the practical fix.
No. The video engine runs in your browser through WebAssembly, so nothing is sent to a server at any point.