This is a much more simple version of the sponsorblock mpv plugin.

There are no other functions in this other than the sponsor skipping.
Also this uses curl rather than python to get the ranges.
There is also no cache so the ranges may get redownloaded
if you watch a video more than once.

b toggles between on/off

Here is a link to the original one:
https://github.com/po5/mpv_sponsorblock