Duration multiplies everything

At a constant bitrate, a ten-minute video needs about ten times the data of a one-minute video. This is why a target like 25 MB can be generous for a short clip and extremely tight for a long one.

Bitrate is the main size control

Video and audio bitrates combine to determine how quickly data accumulates. Lowering either reduces size, while the video bitrate has the largest effect in most normal clips.

Resolution influences the bitrate you need

Higher resolution does not automatically create a specific file size, but it generally needs more bitrate to preserve detail. When the bitrate budget is small, lowering resolution can improve perceived quality.

TRY IT

Put the idea into practice.

Choose a target size and let FitMyVideo calculate the technical settings.

Open video compressor