A single video will not sync to iCloud from my iPhone photo album

What's up Garth254,

If the MP4 video you downloaded from OneDrive to your iPhone’s Photos app isn’t syncing to iCloud or appearing on your iPad, try these steps:

1. First, ensure iCloud Photos is enabled on both devices: go to Settings > [Your Name] > iCloud > Photos and toggle on “Sync this iPhone/iPad.”
2. Confirm both devices use the same Apple ID. Check your iCloud storage (Settings > [Your Name] > iCloud) to ensure you have enough space, as a full iCloud can block uploads.
3. Verify your iPhone has a stable Wi-Fi connection, as syncing may not occur over cellular or weak network.

Also, ensure Low Power Mode is off (Settings > Battery), as it can pause syncing.

Since other videos sync fine, the issue might be specific to this MP4 file. Check if the video is in a supported format (Apple supports H.264 or HEVC for MP4s) by viewing its details in the Photos app (tap the “i” icon). If unsupported, convert it to a compatible format using a third-party app like iMovie or a converter on a computer, then re-import it. Try manually triggering a sync by opening the Photos app on your iPhone, selecting the video, and waiting a few minutes. If it still doesn’t sync, delete the video from Photos, redownload it from OneDrive, and reimport it to Photos.

You mentioned the video doesn’t appear on iCloud.com, which suggests it’s not uploading to iCloud. To rule out a glitch, sign out of iCloud on your iPhone (Settings > [Your Name] > Sign Out), restart the device, and sign back in.

If the issue persists, contact Apple Support for help with potential file-specific or account-related issues.

Let us know how it goes.

Forever,

Freddy.

I wonder if this video file is fully in the control of the Photos app. Files added in non-standard ways (other than through iCloud, for instance,) can appear in Photos without being part of the Photos Library. If you go into Edit mode on the video, will it let you edit and revert the movie?

Vide files are notoriously flaky-- formats change, even when they keep the same extension. I think that I would try Save to Files and then import from there, hoping the transfer might clean up the file.

How long is the movie?