How trim a video in windows 11 without losing quality?

Avidemux is an open-source video trim video without losing quality through its stream copy mode, as this mode completely avoids re-encoding the original video footage.

It allows you to trim multiple video clips in batches, but to use this lossless export feature, you must set both the video and audio tracks to copy output mode.

• First, download and launch the software.
• Go to File → Open and select the video file you want to edit.
• Switch the Video Output drop-down menu to Copy, then set the Audio Output to Copy as well.
• Click the A button to mark the start point of the clip, and click the B button to set the end point.
• Go to File → Save → Save Video, and wait for the export task to complete.

Once the save is complete, you can open the trimmed, lossless video directly.

If you change encoding parameters such as resolution or bitrate, this trim video without losing quality; therefore, it is only suitable for users who need to perform simple video editing.

Cons

• The software's user interface design appears outdated and lacks modern visual optimization.
• It offers only basic cutting and filtering features, with no advanced editing modules.

If you don’t want to install complex, paid editing software, you can try this tool. Its interface looks a bit outdated, so it’s recommended that you familiarize yourself with the layout before you start editing.