Learn how to reduce video file size while balancing resolution, visible quality and the final download size.
EditFull practical documentation · edition reviewed: 26 October 2026
When this task helps
Good compression is not simply the smallest possible file. The goal is to reduce size while keeping faces, text and important details easy to see.
Worked example
A 60-second, 30 MB video needs to fit within 10 MB. Its approximate total bitrate budget is 10 × 8 ÷ 60 = 1.33 Mbit/s, before MB/MiB differences and container overhead. Leave room for audio. A five-minute clip at the same target has a much smaller bitrate budget.
What to check before starting
Start with a moderate reduction and review the result before aiming for a much smaller file. Messaging and social media usually tolerate more compression than presentations or archival copies.
Choosing the settings
Trim unnecessary waiting first, choose a moderate target and export. Compare fast movement and small lettering. Increase the target if important detail disappears. Reducing resolution again may offer little benefit when the source is already small.
Limits that affect the result
Target size is an estimate rather than an exact byte guarantee. Compression cannot restore missing detail; repeated lossy exports accumulate damage.
Mistake to avoid
Avoid repeatedly compressing an already heavily compressed video because blur and visible artifacts become easier to notice.
Illustrative example: size and quality depend on the source file.
Try an EditFull example
This eight-second clip has text over a photograph. Compare the motion and legibility. Choose MP4, select a custom size and enter 1 MB. The sample kept its 720p resolution. Final size depends on the source and settings.