iPhone videos are encoded in HEVC (H.265) and often won't play on Windows or Android. Convert them to universally compatible H.264 MP4 — entirely in your browser, no upload needed.
iPhones record video in HEVC (H.265) format, which Windows doesn't support natively unless you install the HEVC Video Extensions from the Microsoft Store (paid). Converting to H.264 MP4 makes the file playable everywhere with no extra software.
It accepts .heic, .mov, .hevc, .mp4, .mkv, .avi, and .m4v files. The most common iPhone case is a .mov file with HEVC encoding, or a .heic file exported from your Photos app.
It depends on your device and file size. A 1-minute 4K HEVC video typically takes 1–4 minutes on a modern laptop. FFmpeg runs in a single browser thread so it's slower than a native desktop app — but entirely private.
No. FFmpeg is compiled to WebAssembly and runs directly in your browser tab. Your file never leaves your device. InkTools has no backend that handles video files.
HEIC (High Efficiency Image Container) is Apple's file format. It can contain still images or short video clips. HEVC (H.265) is the video codec used inside those files. Both are different from the older H.264/MP4 standard that everything can play.
Not all HEIC files contain a video track — only Live Photos do. If your photo was taken in standard mode (not Live), it won't have motion data to extract, so there's nothing to convert.
The conversion uses the original video data from your file. Quality depends on the source — no additional compression is added beyond the H.264 re-encode needed for universal compatibility.
There's no hard limit, but very large files take longer to process — speed depends on your device, since everything runs locally in your browser tab.