Prepare a smaller video for Outlook while leaving room for message overhead.
Video compressor
Choose your target
Checking your clips…
Drop a video here
MB
480p720p1080pOriginal
24 fps30 fpsOriginal
For this 10 MB maximum
Checking the compression service…
Status updates every 30s
No processing servers are connected yet. You can still check whether your video already fits.
One clip. A clear maximum.
How to make your video smaller
Choose a preset
Start with a target above, or open Full controls for a custom maximum and video settings.
Select your video
Choose a local file. Review the selected maximum, any resolution cap and the advice before compressing.
Download and review
Save the result and check its quality. Upload or attach it in your destination app yourself.
Message size includes more than video
Microsoft’s Outlook guidance describes a 20 MB message limit for internet accounts and a 10 MB default for Exchange, including the attachment and message. Actual account and administrator settings vary. A video at exactly the message ceiling can still be too large once attached.
Leave room for the recipient
Email transport and other attachments consume space too. Choose a smaller target than the applicable total message limit. If it still fails, try a lower maximum or use an approved OneDrive sharing link with suitable permissions.
Questions about Outlook
Why not offer a 20 MB limit preset?
The cited limit is for the whole message, not a promise that a 20 MB raw video will fit. The suggested targets leave more room.
Is Outlook.com the same as every Exchange account?
No. Product, account and organization settings can differ. Follow the limit shown by your account.
Can I change a preset?
Yes. Full controls opens the normal size ruler, custom maximum, resolution, frame rate and audio settings. Switching controls keeps the selected file. Presets set a maximum; the actual result can be smaller.
Will every video reach this size?
No. Very small targets can be unsuitable or fail for a long or detailed clip. Read the advice, try lower resolution or choose a larger maximum. Compression does not trim video or bypass a destination’s content and account rules.