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SPCXTools

Convert Video

Convert videos to MP4, WebM, MOV or MKV — privately, in your browser.

Runs locally — files never leave your device

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How to use Convert Video

  1. 1Choose a video file — MOV, WebM, MKV, MP4 and more.
  2. 2Pick the target format. MP4 plays on almost every device and platform.
  3. 3Click Convert and wait for the progress bar.
  4. 4Preview the result and click Download.

Convert videos to the format you need

A video that won't play is frustrating: iPhone MOV files that Windows can't open, WebM screen recordings that a video editor rejects, or MKV files your TV doesn't understand. This video converter changes the container — and, where needed, the codecs — so your video works where you need it. Everything runs in your browser, so even private videos are safe.

Features

  • Input: MP4, MOV, WebM, MKV, M4V and more.
  • Output: MP4, WebM, MOV or MKV.
  • Smart copying: compatible streams are copied without re-encoding, so it's fast and lossless.
  • Preview before and after.
  • Private and free: no upload, no watermark.

Format compatibility

Format Windows macOS / iOS Android Web browsers Editing apps
MP4 ✓ ✓ ✓ ✓ ✓
MOV Partly ✓ Partly Partly ✓
WebM ✓ Partly ✓ ✓ Partly
MKV Partly With apps Partly ✗ Partly

Related tools

Reduce the file size with Compress Video, cut it shorter with Trim Video, or make a GIF with Video to GIF.

Frequently asked questions

Which format should I choose?
MP4 is the safest choice for sharing, phones, TVs, social media and editing apps. WebM is ideal for websites. MOV is Apple's format, useful for Final Cut and iMovie. MKV is a flexible container popular for archiving.
Will converting reduce quality?
If the video and audio inside are already compatible with the new format, they're copied as-is with no quality loss and conversion is very fast. Otherwise they're re-encoded at high quality.
How do I convert iPhone videos (MOV / HEVC) to MP4?
Choose the MOV file and MP4 as the target. Note that iPhone videos are often encoded with HEVC (H.265); your browser must support decoding it — Safari and most recent versions of Chrome and Edge on supported hardware do.
Is my video uploaded?
No. Conversion happens in your browser with WebCodecs. Your video never leaves your device.
Why did the conversion fail?
Your browser may not support decoding or encoding one of the codecs in the file, for example HEVC on some systems or H.264 in some Linux builds. Try another browser, or choose WebM, which is supported everywhere WebCodecs is.

Related tools

Compress VideoShrink large videos so they're easy to send and share — compressed privately in your browser.Trim VideoCut a video down to just the part you need — quickly, privately and without a watermark.Video to MP3Pull the soundtrack out of any video and save it as MP3 or another audio format, right in your browser.Video to GIFTurn a short video clip into an animated GIF — choose the moment, size and smoothness.Mute VideoStrip the audio track from any video — the picture stays untouched.Rotate VideoFix sideways or upside-down videos by rotating them 90° or 180° — permanently.