Compress Video to 25 MB

File size is bitrate times duration: there is no other lever. Flippy converts your 25 MB budget into kilobits, takes 6% off the top for container overhead, hands 96 kbps to the audio, and gives the video stream every kilobit that remains.

A 25 MB budget buys around three minutes of decent-looking 720p video. Most email-bound clips run shorter than that, which is why 25 MB usually lands with quality to spare.

The fix for a long clip is length, not settings: trim to the part that matters, then compress. Sixty good-looking seconds beat five minutes of mush every time.

The 25 MB line is email's oldest border. Gmail and Yahoo Mail cap messages at 25 MB, classic desktop Outlook defaults to 20 MB, and iCloud Mail sits around 20 MB too. Cross the line in Gmail and your video is quietly swapped for a Google Drive link: which means sharing permissions, an extra click, and a recipient wondering why they need a Google account to watch your clip. A file genuinely under the cap simply arrives.

One catch worth knowing: email encodes attachments as text, which inflates them by roughly a third, and the limit is measured after encoding. A video that reads 24 MB on disk can bounce as a 32 MB message. Flippy already aims 6% below the number on the button; when the mail absolutely must not bounce anywhere, the 10 MB page is the paranoid choice.

Corporate mail is stricter still: plenty of company servers stop attachments around 10 MB regardless of what the sender's provider permits. If your clip is headed into an organization rather than to a personal inbox, smaller is safer: and past three minutes of footage, trimming before compressing protects the picture far better than pushing the size math.