Video compression
A 4K, one-minute video can easily eat a few hundred MB. When phone storage runs low, video is usually one of the biggest offenders. The Compress tool does one thing: make the video smaller without obviously throwing away picture detail.
Three presets
The presets come in Low, Medium, and High:
- Low - smallest size. Good for email attachments, chat sends. Visible quality loss, suitable for footage where you don't care.
- Medium - the sweet spot for most cases. Output is roughly a third to half the original size, no obvious difference in everyday viewing.
- High - mild compression, quality first. Right for footage you want to keep, archive, or re-edit later.
The difference between the three isn't a brute-force "more quality = bigger file" scale; it's a judgment call about which matters more in your scenario.
Custom bitrate
When the presets don't quite fit, drag the custom bitrate slider. Bitrate directly controls how much data goes into each second: higher bitrate -> better quality but larger file; lower bitrate -> smaller file but maybe mushy. Pick a number that looks good to you, then go.
Batch processing
You can compress multiple videos at once; they're processed sequentially. Each video is compressed independently - the next one starts after the previous one finishes. Processing time depends on video length and target bitrate - a one-minute clip at Low finishes in seconds.
Compress vs. Convert
Compress changes the bitrate, so the picture moves; Convert only swaps the container, so the picture stays put. Need to slim down before sharing? Compress. Need a format your player accepts? Convert.