HEVC (H.265) to H.264 Converter — Free, Online, No Upload
HEVC is half the size of H.264 but blocked on Chrome, paid on Windows 10, and missing from older Macs. Converting to H.264 once gives you a file that plays everywhere.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Why use this HEVC (H.265) to H.264 Converter?
- Chrome and Firefox refuse to decode HEVC inside MP4 / MOV.
- Windows 10 needs a paid HEVC codec from the Microsoft Store.
- Old Macs (pre-2017) and many Smart TVs cannot decode HEVC at full speed.
- Default CRF 23 keeps quality visually identical — file size grows ~1.5–2× because H.264 is less efficient.
How to use it
Drop the HEVC file (.mp4 or .mov) into the converter
iPhone HEVC exports, GoPro HERO 7+ files, and DJI drones are all supported.
Pick H.264 / MP4 as the output codec
AAC is selected automatically for the audio track.
Download — file now plays on Windows, in Chrome, on Smart TVs
Verify in any player to confirm. The new MP4 is universally compatible.
What to watch out for
| The file gets bigger | H.265 is roughly twice as efficient, so the H.264 version of the same quality is roughly twice the size. That is the trade you are making for compatibility. |
|---|---|
| 10-bit becomes 8-bit | iPhone HEVC is often 10-bit HDR. Converting to 8-bit H.264 can wash out highlights or shift colour — check a bright scene before deleting the original. |
| It is slower than it looks | HEVC has to be decoded before H.264 can be encoded, and browser decoding of HEVC is the slow half. Expect longer than a same-codec operation. |
FAQ
Why does HEVC not play in my browser?
HEVC requires patent-licensed decoders. Chrome and Firefox refuse to bundle them; Safari plays HEVC because Apple holds licenses. H.264 has no such restriction.
How much bigger will the H.264 file be?
Roughly 1.5–2× the HEVC source for visually-equivalent quality. A 100 MB HEVC clip becomes a 150–200 MB H.264 clip.
Does this run in my browser?
Yes — the tool uses FFmpeg compiled to WebAssembly. Your file never uploads to a server, never leaves your device, and there is no signup or watermark.