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Fun fact: The history of lossless editing goes back to the dawn of digital video on personal computers. For example, QuickTime Movies¹ have always been based on an EDL² model. Only when you "export" (vs. "save") is the content re-encoded.

The most popular tool in this category that I know of is https://mifi.no/losslesscut/.

¹ The object, vs. the QuickTime Movie file format ² https://en.wikipedia.org/wiki/Edit_decision_list

Only when you "export" (vs. "save") is the content re-encoded.

That's the way video editing in general has always worked.

Avidemux is another alternative existing for many years. I've used it a lot to quickly edit videos without recompression - saved me tons of time.

Yes, I recall using Avidemux for this purpose roughly 20 years ago.

There's also LosslessCut: https://github.com/mifi/lossless-cut

It does

https://avidemux.sourceforge.net/

It has existed for decades.