MP4 to MOV

Re-encode an MP4 file into a QuickTime-friendly MOV container with H.264 video and AAC audio. MOV is preferred by Final Cut Pro, iMovie, and many Apple workflows. We also set the moov atom to the start of the file (faststart) so the video can begin playing while it's still downloading. The conversion runs locally via ffmpeg.wasm, so your file never leaves your device. Performance depends on your CPU: expect roughly real-time encoding for short clips (a 5-minute 720p video may take 1–2 minutes). Very large files or 4K sources may be slow or run out of memory — for best results keep inputs under about 500 MB.