Convert to
Speed
MP4 = H.264 + AAC · WebM = VP8 + Opus
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Start a videoHow to use the video converter
- Choose your videoAny common format: MOV from an iPhone, MKV from OBS, AVI, WebM.
- Pick the formatMP4 is the safe choice for YouTube, editors and phones.
- DownloadPreview the result, then save it.
Questions
Which format is best for YouTube?
MP4 with H.264 video and AAC audio. YouTube accepts many formats, but MP4 uploads and processes most reliably.
What does “quick copy” do?
It moves the existing video and audio into the new container without re-encoding. It is instant and lossless, but only works when the codecs fit the new format.
Is my video uploaded?
No. The converter runs inside your browser with WebAssembly.
How do I turn OBS MKV recordings into MP4?
Choose MP4 and “Try a quick copy”. OBS recordings usually convert in seconds without quality loss.