How to convert MOV to MP4 on Mac without losing quality
Updated 2026-06-11 · Runs locally — nothing uploaded
Got a .mov straight off an iPhone or QuickTime that something won’t accept? MOV is Apple’s container; MP4 plays just about everywhere. Converting between them doesn’t have to mean a quality hit or a trip to a sketchy upload site.
FFmix re-encodes your .mov to a clean, widely compatible .mp4 at near-lossless quality — or remuxes it instantly when the video is already H.264. Either way it runs on your Mac, and nothing is uploaded.
Steps
- 1 Drag your .mov file into FFmix.
- 2 Choose the Convert task and pick MP4 (or the Anything → MP4 preset).
- 3 Confirm and click Start — the .mp4 appears next to the original.
Advanced: the real ffmpeg command
This is exactly what FFmix runs. Copy it, tweak it, or just use the one-click preset.
ffmpeg -i input.mov -c:v libx264 -crf 20 -pix_fmt yuv420p -movflags +faststart -c:a aac -b:a 160k output.mp4Drop a file and go — all local, nothing uploaded.
FAQ
Will converting MOV to MP4 reduce the quality?
Barely. FFmix re-encodes at CRF 20, which is visually near-lossless. If the .mov already uses H.264 it can remux without re-encoding at all, for a bit-for-bit identical video.
Why convert MOV to MP4 at all?
MOV is Apple's QuickTime container. MP4 plays on virtually every device, browser, and platform, so it's the safer choice for sharing and uploading.
Is anything uploaded to a server?
No. The conversion runs locally on your Mac through the bundled ffmpeg engine.