How is performance? Right now I use Handbrake to do video optimization. However, I'm not a video expert and all the options are pretty daunting to me. I don't know how to get the right mix of optimization without having the video encoding take forever. I would guess running the conversion in browser would just make everything slower. I wish there was something simpler for video, like ImageOptim. Just drag the video in and it compresses it using the best options based on compatibility needs.