Your .MOV won't play on Windows — here's why

What's actually missing

HEVC / H.265. Since 2017 iPhones record in HEVC by default. Windows 10 and 11 can open the container but not decode the video without the “HEVC Video Extensions” codec from the Microsoft Store — which costs about a dollar and which most people never install. The classic symptom is audio playing with no picture.

ProRes. Written by Final Cut, DaVinci and iPhone Pro models. Windows Media Player cannot open it at all; VLC usually can.

The container. Occasionally the file is fine and the recipient just needs a player that isn't Media Player. VLC opens almost everything and is free — worth trying before converting anything.

The fix that always works: convert to H.264 MP4

H.264 in an MP4 container is the closest thing video has to a universal format. Every Windows machine made in the last fifteen years plays it with no extra software, as does every phone, TV, browser and editing tool.

1. Open the .MOV on your Mac.
2. Convert it to MP4 with the H.264 codec (not H.265 — that's the format causing the problem).
3. Send that file. It will open on the other side with nothing installed.

QuickTime's Export As → 1080p also produces H.264, so for a single file you don't strictly need any app. For a folder of clips, batching it is the difference between one drag and forty exports.

Stopping it happening again

On the iPhone: Settings → Camera → Formats → Most Compatible. Your phone then records H.264 instead of HEVC. Files get roughly 40% larger, and they open everywhere without a conversation.

If you keep HEVC for the storage saving, just remember that anything leaving your Mac for a Windows or Android user needs converting first.

Common questions

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