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Lossless video editing (also known as direct editing or non coding editing) is a video processing method that saves time and resources. It allows you to complete video and audio trimming, connection, and sequencing without changing the encoding of the original file, so as to ensure that the edited file remains consistent with the original quality.

Lossless video editing is especially suitable for users who only need to perform basic adjustments (such as removing unnecessary parts, adjusting the sequence of clips, etc.) but are unwilling to sacrifice video quality. Because when the video file is recoded, it may lead to poor picture quality, increased compression loss and other problems. Although lossless video editing has these advantages, it may not support all video coding types, so attention should be paid when selecting appropriate tools.

Several video editing software provide lossless video editing functions, such as: Avidemux 、LosslessCut、 MKVToolNix Etc. These tools are easy to use and can help users quickly complete video editing.

The following describes LosslessCut:

LosslessCut is an open source project. The so-called non recoding cutting, or lossless cutting, is based on the cutting of GOP intervals (Group of pictures),
The GOP interval between two keyframes can be independent of all other pictures in the video, so you can cut and output without recoding. Keyframe based cutting is lossless cutting,
If you cut based on a specific non key frame, most of them need to re code the output. The following official introduction is quoted:
Lossless cutting of most video and audio formats
Intelligent shearing (experiment)
Lossless cutting of some video/audio (for cutting advertisements, etc.)
Lossless reordering of video/audio clips
Lossless merge/concatenation of any file (with the same codec parameters, such as from the same camera)
Lossless stream editing
Combine any track from multiple files (for example, add music or subtitle tracks to a video file)
Delete unwanted tracks
Replace or recode only some tracks
Extract all tracks from a file (extract videos, audio, subtitles, attachments, and other tracks from a file into a separate file)
Fast multi file workflow (note: no batch/batch export yet)
Keyboard Shortcut Workflow
Lossless remixing of video/audio into different container (file) formats

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