Here's my basic video workflow. I've added a few items since that post:
A. Click the little gear in the lower left corner of the beginning of each clip and select Clip Adjustments. Under Video Effects, select Cartoon for OGTV videos and Hard Light for TA-TV videos. Cartoon has a dreamy look and saves video size because the soft focus means adjacent pixels are more similar. Hard Light is bigger, but necessary for the details in TA-TV.
B. I've changed my opening title method so that the opening title is now overlaid on the first 3.5 seconds of the clip. The closing title is still on a gradient background.
C. To finish, I export the movie using QuickTime. A few people don't have QuickTime, but it's a free download, and offers much more flexibility than the other options. In the export dialog box, click Options in the lower right. Under Settings in the Movie Settings dialog box that comes up, select Compression Type: H.264, Frame Rate: Current, Data Rate: Automatic, Compressor: Medium, and Encoding: Best Quality. Under Size, I use 512x288. This doesn't work with older iPhones, but does work on 4's and on all browsers with QuickTime. The reason for selecting this size is because it's my title image size used elsewhere on the website. Under sound settings, I leave all defaults. Under Prepare for Internet Streaming, I select Fast Start.