[Mister_Snuggles]

When I need to trim part of a clip in Kdenlive, I just use the Cut tool on the timeline and delete the portion I don't need. This doesn't create a separate file, it just tells it to only use a portion of the original file. It's been a while since I've used it though, so there might be an even easier way.

For muting you can apply the Mute audio effect for the required portion of the video.

[j_s]

I think I was expecting cutting to work with a selection (a click + drag to select a range) rather than clicking to cut at the start, then again at the desired end, and finally removing the newly segmented portion.

Appreciate the help as I learn how to properly use this tool!

[ConfucianNardin]

You can also just drag the edges of the clip in the timeline.

[Mister_Snuggles]

Nice - I forgot about that!