cannot remember playback speed of each individual sites. I want youtube video to play at 1.3 but that speed carries to ALL video on ALL sites

It is not your extension. it stopped working.
I rebooted everything reinstalled , no good. Then I tried the flash player controls and it does not work either. chrome works fine. i think it may be firefox. can you help me out on this

deixou de funcionar no firefox.... já desisntalei e reinstalei tanto o firefox quanto a extensão, mas não voltou a funcionar

Stops working after 1-2 videos. Only way to make it work again is to remove and add it again.

good