If the video is choppy or hangs, thats usually a sign of a slow computer or internet connection. It can also be a sign of a corrupted video.
Try reducing the frame rate or resolution and see if it speeds up(plays smoother) even though the quality may not be a good.
It just might come down on what your willing to compromise with smooth/poor quality vs choppy/high quality.
If your lucky you can find an inbeween setting that you can live with.
I don't know about animations, but with H.264 video, YouTube can do nasty things to it when recompressing. Similar to the mayhem flickr wreaks on stills when downsizing them. Grrrrrr. Handbrake is a cool free app that does an amazing job of reducing file sizes while maintaining quality. I can't think of any reason why it wouldn't work with an h.264 animation, and it might get past YouTube's arbitary transcoding the upload. Just a guess though.
Vimeo is kinder to your work BTW
You need to read up on video CoDecs, datarates and all that stuff...
It's probably not a fair comparison, because I have been using Photoshop for so long, but ISTM that Premiere Pro and the whole format/wrapper/CODEC etc. etc. etc. thing was way more difficult to learn. You might as well tell someone the need to read up on quantum mechanics, except I am sure that would be easier to learn. Thank goodness for those long lists of export presets in Premier Pro CS6 and CC.
I guess the best place to find how to format stuff for YouYube, is YouTube.
Thanks for the helpful reply. I forgot to mention that I have it set at 24 fps. As you noted, I guess I need to experiment with different frame rates/resolution to see. A long and arduous task, but you gotta do what you gotta do.
Thanks. I was in the process of testing it on Vimeo and will do that. I'll look into Handbrake as well. I appreciate the response.
Definitely have been to that page...several times over. As I mentioned, it's time to put on the lab coat and do some deeper experimentation.