Any tool can cut youtube time?

Anyone knows a tool or online downloader where I will download specific video from youtube but in specific time stamp (start - end)

I've never heard of a tool that does both.

I say this from a programmers point of view:

As far as I know, the video would have to be downloaded in full first, and then clipped to the desired length.

You could combine youtube-dl and the code from this stack overflow answer. If you know some python or someone who does.

https://github.com/ytdl-org/youtube-dl

https://stackoverflow.com/a/37323543/6716264

There are many online websites, don't know about the tool

Any issues with cutting a video on a local computer?
Anyway look at ytcutter.com seems it does what you need.