Convert HEVC to H.264 Online — No Upload, No Watermark
HEVC (H.265) is half the file size of H.264 but unsupported on Windows 10 without a paid codec, in Chrome, on older Macs, and on most editing timelines. Converting to H.264 restores compatibility.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Where HEVC files come from
Every recent iPhone, most Android flagships, modern drones and current action cameras record HEVC by default. The files are efficient and awkward: editors stutter on them and Windows asks for a paid decoder.
What changes when you convert HEVC to H.264
| Video | HEVC re-encoded to H.264 at CRF 23 |
|---|---|
| Audio | Re-encoded to AAC |
| File size | Grows by roughly 1.5 to 2 times for equivalent quality |
Worth knowing first
Expect the file to get bigger. That is the trade: H.264 needs about twice the bitrate for the same picture, and you are buying playback everywhere with that space. If you want compatibility and a smaller file, convert first and then run the Video Compressor.
FAQ
Why does everything record in HEVC now?
Because it halves storage for the same quality, which matters enormously on a phone and for 4K in particular. The cost is that decoding needs hardware or licensed software, which not every device has.
Will my editor get faster?
Usually noticeably. HEVC is heavy to decode, especially at 4K, and many editors handle H.264 far more smoothly. Converting before editing is common practice for exactly this reason.
Can I avoid the size increase?
Not while keeping the same quality, since the efficiency difference is inherent to the codecs. You can choose to give up some quality instead by compressing afterwards, which is often the right call for footage that is only going to be watched on a phone.
Is this HEVC to H.264 converter really free and without upload?
Yes. The tool runs entirely in your browser using FFmpeg compiled to WebAssembly. Your HEVC file never leaves your device — open the DevTools Network tab to verify zero uploads. No signup and no watermark. The practical size limit is the memory your browser gives this tab, which is generous on a computer and a few hundred megabytes on a phone.