I download yours software (Kdenlive) install it and works fine. While i need use speed effect i can't because in menu i can not find this https://cdn.discordapp.com/attachments/697372522571890799/697372554905649162/unknown.png ^^^Print Screen^^^

hi!, viewtopic.php?f=270&t=164212&hilit=speed+change

usually i use the CTRL key ... but there is also a 3rd method.. that is to click on clip (timeline) with right mouse button and select "change speed" to enter manually a value. (maybe if you want to REVERSE a clip)