Quick answer: your video is bigger than the app you’re sending it with allows. Either shrink the file to fit (compress it, lower the resolution, or trim it) or send a link to it instead of the file itself. Which one is best depends on where it’s going.
Why it happens
Every app caps the size of a single file. Gmail stops at 25 MB, Outlook at around 20 MB, and free Discord accounts at 20 MB. Meanwhile, your iPhone records far more data per minute than most people expect:
| Camera setting | Approximate size per minute |
|---|---|
| 720p, 30 fps | 40 MB |
| 1080p, 30 fps (default on many iPhones) | 60 MB |
| 1080p, 60 fps | 90 MB |
| 4K, 30 fps | 170 MB |
| 4K, 60 fps | 400 MB |
Those are Apple’s own estimates from Settings › Camera › Record Video. So a 30-second 4K clip is already around 85 MB — more than three times what Gmail will accept.
Fix 1: Send it as a link instead
If the person just needs to watch it, a link avoids size limits entirely.
- Open the video in Photos and tap the Share button.
- If you use iCloud Photos, choose Copy iCloud Link and paste it into your message.
- Not on iCloud Photos? Upload to Google Drive or Dropbox and share the link from there.
The catch: links expire (iCloud links last 30 days), and some people never click them. For anything they need to keep or post, sending the file is better.
Fix 2: Use Mail Drop for email
If you send from Apple’s Mail app, iPhone offers Mail Drop automatically when an attachment is too large. It uploads the file to iCloud and sends the recipient a download link — up to 5 GB, available for 30 days, and it doesn’t count against your iCloud storage. This only works from the Mail app, not Gmail or Outlook.
Fix 3: Send as a document in WhatsApp
WhatsApp limits normal videos to around 100 MB and recompresses them. If you attach the video as a Document instead (tap + › Document › Choose from Photos), you can send files up to 2 GB at full quality. The recipient gets a file to download rather than an inline video.
Fix 4: Compress the video
Compressing re-encodes the video at a lower bitrate, and usually a lower resolution, so the file shrinks while the clip stays the same length.
Free option — Shortcuts: Apple’s Shortcuts app has an Encode Media action that can re-save a video at a smaller resolution like 720p or 540p. It works, but you have to build the shortcut yourself and guess which resolution will hit your limit.
Faster option — a compressor app: an app like Squeezius does the math for you. You choose the destination (“Email”, “Discord”, or an exact number of MB), and it picks the resolution and bitrate that fit. Everything runs on your phone, which matters if you’d rather not upload family videos to a random website.
Fix 5: Trim it
If only part of the video matters, trim it first. In Photos, tap Edit, drag the yellow handles on the timeline, and tap Done. Halving the length roughly halves the file size — and often gets you under the limit without losing any quality.
Which fix should you use?
- Recipient just needs to watch it: share a link.
- Emailing from Apple Mail: let Mail Drop handle it.
- WhatsApp at full quality: send as a document.
- Discord, Gmail, Outlook, forms and uploads: compress to fit.
- Only a few seconds matter: trim, then send.