Compress Video for Email and Social Upload Limits

Why videos exceed attachment limits

A minute of four K screen recording can exceed hundreds of megabytes because video stores full frames plus temporal compression. Email providers cap attachments around twenty-five megabytes; messaging apps recompress aggressively. Creators need deliberate downscaling and bitrate targets instead of hoping zip archives help—they rarely shrink H.264 streams meaningfully.

Social platforms re-encode uploads on ingest. Feeding them a thoughtfully compressed master reduces generation loss compared with uploading uncompressed screen captures. For archival, keep camera originals separate from delivery copies.

FFmpeg in the browser

DigitalConverter video tools compile FFmpeg to WebAssembly, enabling trim, transcode, and compress locally. You choose resolution caps, constant rate factor or average bitrate, and audio AAC bitrate. Processing time scales with duration and hardware threads; laptops outperform phones on ten-minute clips.

Codec choice matters: H.264 in MP4 maximizes compatibility; H.265 or AV1 may shrink further but break older players. Unless you know your audience players, H.264 with AAC audio remains the pragmatic default for email and slide decks.

Suggested presets

Screen tutorials: one thousand twenty-eight pixel width, four to six megabits per second video, one hundred twenty-eight kilobits per second mono audio. Talking head interviews: seven hundred twenty pixel width, two to three megabits per second. Always preview on the target device before sending to executives on flights with limited bandwidth.