okay, so, i have been training the Katana Zero GE No Slow Mo run, and the thing is, how do i roll on "dropable" floors using down+move? I only fall down, and i need to roll everytime or else i will not get a faster time, like, Cherry Jam (the guy who holds the WR for my category) can roll on "dropable" surfaces even while using the mouse and keyboard, pls help me.

Okay, i am nee in speedrunning and OBS saves the video file as flv, but i can't post it on youtube because on the upload it is stuck in 6%!, so i am trying to find a way to convert a 56 minutes and 54 seconds speedrun to MP4 or any other supported youtube file formats, but i can-t find a converter that let me convert the ENTIRE flv file, that way, i have only half of the speedrun converted, someone plz help me, how do i fix youtube, or how do i convert a flv file to mp4 and etc without any file length limit? please help me