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.
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Taille max: ~2 Go (selon mémoire)
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.
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.