alg.cubing.net also has a feature where you can end with the cube being solved, i.e. there's no need to generate a scramble unless you plan on looking at the solution on a real cube. Where it initially says "Moves" in the settings, change it to "Reconstruction (no scramble)".
You can now go back/foward one frame at a time on YouTube (using , and .)
Scrambles for official comps are available on wcadb.net