Manatee

A video that was not copied to the iPhone because it cannot be played

· 6 min read

The message that a video “was not copied to the iPhone because it cannot be played on this iPhone” means the sync itself worked and the file is intact, but the phone cannot decode the way that video is encoded. Convert it to an MP4 with H.264 video and AAC audio, at 1080p if the phone is an older model, add the new copy to the TV app, and sync again. Nothing is wrong with the cable, the phone or your library.

What the message is telling you

On macOS Catalina and later, syncing runs through Finder: the iPhone appears in the sidebar, and its Movies tab lists the videos held in the TV app’s library. Before copying each one, the Mac compares the video with what that particular model can play. A video that fails the comparison is skipped with this message, and the rest of the sync carries on.

A Mac can decode far more than a phone can, which is why the same file plays happily in QuickTime Player. The usual reasons a video passes on the Mac and fails for the phone:

  • Resolution or frame rate beyond the model’s limit. 4K at a high frame rate is a common example on older phones.
  • A codec that model does not support. HEVC on a very old phone, or an editing codec such as ProRes on a model that was never built to play it.
  • An unusual variety of a common codec. H.264 comes in many profiles. The 10-bit and 4:2:2 versions, which some cameras and some downloaded files use, play on a Mac and not on a phone.
  • An audio track the phone cannot handle inside that kind of file.

The file extension tells you none of this. An .mp4 or .m4v is a container, and what matters is the video inside it. Container vs codec explains why.

A related symptom has the same cause and the same fix: you drag an MKV, AVI or WMV into the TV app and nothing happens. The TV app only imports what it can play, and it declines everything else without comment.

Find out what is inside the file

  1. Open the video in QuickTime Player.
  2. Choose Window, Show Movie Inspector.
  3. Note the resolution, the video codec and the frame rate.

Or ask Spotlight in Terminal:

mdls -name kMDItemCodecs -name kMDItemPixelWidth -name kMDItemPixelHeight ~/Movies/clip.mp4

A 1080p file with ordinary H.264 video and AAC audio is almost always fine on any iPhone still in everyday use. Anything else is a suspect: HEVC, a resolution above 1080p on an older phone, or a codec name you do not recognize.

Convert it to something the phone can play

With QuickTime Player

  1. Open the video in QuickTime Player.
  2. Choose File, Export As, 1080p.
  3. If the sheet offers a choice between greater compatibility and smaller file size, choose greater compatibility, which is H.264.
  4. Save the copy.

The result is a MOV that the TV app accepts. The limit is that QuickTime Player can only export what it can open, which rules out MKV, AVI, WMV and several other types.

With Manatee

For those, or for a folder of videos, Manatee converts in one drop. Open it, choose Convert, drop the videos in, and pick MP4. It accepts MKV, AVI, WMV, FLV, WebM, MOV and many more, and writes an H.264 MP4 with AAC audio beside each original. The originals are never modified, and nothing is uploaded: the conversion runs on the Mac. It is free for 24 hours with every feature, then $9 once.

One honest limit. Manatee keeps the video’s resolution when it converts. If the phone is old enough that 4K itself is the obstacle, export a 1080p copy from QuickTime Player instead. How to convert MKV to MP4 goes into more detail for that format.

Sync the new copy

  1. Open the TV app and choose File, Import. Pick the converted video. It appears under Home Videos in the Library section of the sidebar.
  2. Right-click the old version in the library and choose Delete from Library, so it stops failing on every sync.
  3. Connect the iPhone and select it in the Finder sidebar.
  4. Open the Movies tab, turn on Sync movies, tick the video, and click Apply.
  5. On the phone, open the TV app and look in Library, Home Videos.

Ways to skip syncing altogether

Syncing through Finder is the old route, and for a single video it is rarely the fastest.

  • AirDrop. Send the video from Finder to the phone. A video the phone can play is saved to Photos.
  • The Files app. Copy the video into iCloud Drive, or connect the phone, select it in Finder, open the Files tab and drag the video onto an app that accepts files. The Files app plays common MP4 and MOV videos itself.
  • A player app. For a format the phone cannot play natively, a video player from the App Store can open it without any conversion. Converting once to MP4 has the advantage that the same file then plays almost everywhere, including on a TV or a Windows PC.

Questions

Why did other videos from the same source sync without trouble? Each file is encoded separately. Two downloads or two camera clips with the same extension can differ in resolution, profile and bit depth, and only one of them needs to cross the phone’s limit.

Will converting reduce the quality? A conversion that re-encodes the video is lossy, but at sensible settings the difference is hard to see on a phone screen. Keep the original file as your master. Remux versus re-encode explains when a conversion costs quality and when it does not.

The message appears for a movie I bought. Can I convert that? No. Purchased and rented movies are copy protected, and Manatee, like any legitimate tool, does not remove protection. Download the purchase directly on the phone from the TV app’s Library instead of syncing it.

Does this apply to an iPad as well? Yes. The same check runs for every device, and the message names whichever one you are syncing.