Hello susinfo,
If you are having trouble saving long videos on your iPhone, you can try to share them via alternate means as explained here: Share long videos on your iPhone - Apple Support. Review these options:
"Send a video using AirDrop
With AirDrop
, you can send a large video to a nearby iPhone, iPad, or Mac. AirDrop sends information using Wi-Fi and Bluetooth, so before sending, make sure both you and the recipient have these controls turned on in Control Center.
Note: AirDrop requires iOS 7, iPadOS 13, OS X 10.10, or later.
- If the person you’re sending the video to isn’t in your contacts, have them do one of the following:
- On iPhone or iPad: Have them go to Settings
> General > AirDrop, then tap Everyone for 10 Minutes. - On a Mac: Have them go to Apple menu
> System Settings > General > AirDrop & Handoff, then click Everyone.
- Open your photo library, tap the video you want to send, then tap
. - If you want to send the video in its original format, including metadata, location, and any associated edit history or captions, tap Options, then turn on All Photos Data.
- Tap AirDrop, then tap the contact or device you want to share with.
- After you share, the recipient receives an alert to accept or decline the AirDrop transfer.
Send a video using an iCloud link
An iCloud link is a URL that you can use to send a large video with Messages or Mail.
To send an iCloud link, make sure you have iCloud Photos turned on. Then follow these steps:
- Open your photo library, tap the video you want to send, then tap
. - Tap Options, tap iCloud Link, then tap Done.
- Tap Messages
or Mail
, enter the recipient of the iCloud link, then tap
to send the message or email. - Recipients have 30 days to download a video sent with an iCloud link.
Send a video using Mail Drop
With Mail Drop, you can send a large video as an attachment in Mail.
Note: Mail Drop requires iOS 9.2, iPadOS 13, OS X 10.10, or later.
- Open your photo library, then tap the video you want to send.
- Tap
, then tap Mail. - Tap the To field, then enter the name or email of the recipient.
- If you want to add a subject or message, tap the Subject field or email body.
- Tap
to send. - Recipients have 30 days to download Mail Drop attachments."
We hope this helps. Let us know if we can assist with anything else at all. Take care.