Freely set the start and end time to loop. No other sites used.
Demo (v0.1, 20190128): https://www.youtube.com/watch?v=cil8t6SR_LQ
- Save repeat part as list.
- Import / export list.
- Fine tune the start and end time by keyboard.
- Preview with end time to start time. (is it smoothly?)
- Fix bug: Now reload page from any link can successfully add buttons.
- Add English: (Default).
- Select language: From tampermonkey button.
(Bad English sorry)