The portal says maximum 25 MB. Your phone clip is 180 MB. Email caps out around 25 MB too, and a lot of forms are stricter. Video is a different animal from photos — the tricks that shrink an image barely touch a video — so it’s worth knowing what actually moves the number.
Why Videos Are So Big
A video’s size is roughly bitrate × duration. Bitrate is how much data each second of video uses, and it’s driven by resolution (4K vs 1080p), frame rate (60fps vs 30fps), and the codec doing the compressing. A 4K/60 clip from a modern phone burns through data fast — which is why a one-minute video can be well over 100 MB.
What Actually Shrinks It
- Lower the resolution. Dropping 4K to 1080p (or 1080p to 720p) is the biggest single lever — and for most uploads, 1080p is plenty.
- Lower the bitrate. Re-encoding at a lower target bitrate directly cuts size; too low and it gets blocky, so there’s a floor.
- Use an efficient codec. H.264 is universal; H.265 (HEVC) squeezes the same quality smaller, if the destination accepts it.
- Trim the length. The cheapest megabytes are the seconds you don’t need — cut dead air at the start and end.
Free Tools
HandBrake (free, desktop) is the powerful option — it can re-encode to H.264/H.265 at a chosen resolution and quality. The catch: hitting an exact target size means guessing a bitrate, exporting, checking, and adjusting. QuickTime (Mac) can export at lower resolutions, and phone editors can trim and downscale. All of these work; they just take trial and error to land under a specific cap.
The $1 version
If you just want it under the limit without running the encode loop by hand, Video Under Size takes your clip and a target (say, 25 MB) and encodes an MP4/H.264 to fit — $1, no desktop software, no bitrate math. Agents can call the same operation over x402.
When You Shouldn’t Crush It
If the video is evidence, a demo where detail matters, or something a client will scrutinize, don’t nuke the quality to hit a tiny cap — trim length first, drop to 1080p, and only then lower bitrate. If you genuinely can’t hit the limit without ruining it, upload it to a link-sharing service and send the link instead.
FAQ
Will compressing ruin the quality?
Not if you’re sensible. Going 4K→1080p and trimming dead time often gets you under the cap before quality suffers at all. It’s only aggressive bitrate cuts that get blocky.
What format should I use?
MP4 with H.264 is the safe, universally accepted choice. Use H.265 only if you know the destination supports it.
My video is barely over the limit — what’s fastest?
Trim a few unneeded seconds or drop one resolution step; that’s usually enough for a small overage.
The Takeaway
Video size is bitrate and duration — lower the resolution, trim the length, then encode to the number. Free tools like HandBrake can do it with some trial and error; when you just want it under a specific cap in one step, use the $1 video compressor, or browse the full $1 tools catalog.