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Home/Zoom or Teams recording too big to share? Shrink it to 25 MB

Zoom or Teams recording too big to share? Shrink it to 25 MB

Zoom and Teams recordings are made for speed, not size. A one hour call can be several hundred MB, far past what email and most chat apps accept.

  • Nothing is uploaded. Your browser does the compression, so the file stays on your device.
  • Lands under the real limit. We aim a little below it, so the upload goes through first time.
  • Fast. A 30 second 1080p clip fits into 10 MB in about two seconds on a desktop.
Where are you sending it?

Custom size 25.00 MB. We aim for 24.25 MB, a small safety margin so the file never lands just over.

Sent to our servers: 0 bytes. It all happens in this tab.

When you need 25.00 MB

Meetings are mostly still: a speaker and a slide. That compresses extremely well. The 25 MB target is our choice so it fits a normal email, not a limit set by Zoom or Microsoft.

What to expect

A ten minute call at 480p to 540p fits in 25 MB, with speech staying clear. Longer calls need a bigger target or a trim first.

How much video fits in 25 MB

Worked out with the same maths the compressor uses, for a typical 1080p phone or screen clip with sound. Fast motion needs more room, still scenes and screen recordings need less.

Clip lengthResolution we pickHow it looks
10 seconds1080pSharp
30 seconds1080pSharp
1 minute720pSharp
2 minutes540pGood on a phone
5 minutes360pWatchable, small
10 minutes270pWatchable, small

How we hit the number

We work out how many bits each second of video can use: the target size, minus a safety margin, divided by the length, minus the audio. Then we pick the largest resolution that still looks clean at that rate and encode with your browser's built-in video encoder. If the result is still over, we automatically try once more at a lower rate.

The target we aim for is 24.25 MB, which is 750 KB under 25.00 MB, so the file is not turned away over a few bytes.

Questions people ask

Will I still hear everyone clearly?

Yes. Audio is kept at a speech-friendly rate, and speech needs little room.

Is there a better way to share a long recording?

A cloud link works for an hour-long call. For short clips, a small file is simplest.

Related

Limits change. We link the official page wherever there is one, and the safety margin means a small change is unlikely to matter. Last updated 2026-11-09.