HEVC to MP4 (H.264) converter

iPhones and many Android phones record HEVC (H.265). It saves space but fails on older PCs, Firefox, some TVs and web apps.

Drop a HEVC file hereThe converter loads in your browser.

What happens to your HEVC

The HEVC video is decoded and re-encoded to H.264 on your device. Decoding HEVC works in the in-browser engine; encoding to HEVC does not (see below).

Tip: HEVC decoding is heavy. A 1-minute 4K clip can take several minutes and a lot of memory, so try "1080p" in the options for faster results.

How to convert HEVC to MP4 (H.264)

  1. Drop your HEVC file on the box above, or tap it to pick one. The engine (about 31 MB) loads once per visit.
  2. The converter reads the file's streams and shows which codecs are inside.
  3. Keep the defaults, or pick a quality and resolution.
  4. Press the button, wait for the progress bar, then download your MP4 (H.264).

Questions

Can I convert H.264 to HEVC here?

No. The x265 encoder does not run reliably in single-threaded WebAssembly, so we don't offer it. Use HandBrake or desktop FFmpeg for HEVC output.

Will the file get bigger?

Usually yes, around 1.5 to 2 times at similar quality, because H.264 is less efficient than HEVC.

Is my HEVC file uploaded?

No. The HEVC is read from your device by FFmpeg running as WebAssembly in the page, and the MP4 (H.264) is written back to your device. No server ever receives it.

Is there a size limit for HEVC to MP4 (H.264)?

We set none. The practical limit is browser memory: roughly 2 GB of output on a computer, and much less on phones.