I'm working on a project in Flash CS5 with 4 scenes. When I test my movie in flash professional, it plays perfectly. When I export it as a .swf or .mov, the playback is slow and choppy. My movie is 24fps and I've matched the export fps when trying to make it a .mov. The only way it plays smooth out of flash professional is when it is published as an .html. I went back and tried other projects and they export fine. One thing I noticed when trying to export the .swf is that export process goes extremely quickly like it is not going through all the steps. The export bar appears for less than a second and then the file is complete, with poor quality. Any ideas on a fix? I even tried copying it into a new .fla, but it didn't work.
The only way it plays smooth out of flash professional is when it is published as an .html
You don`t publish a flash movie to html, html is only the wrapper around the swf-file, so if your swf works fine embedded inside an html and is choppy when testing as a standalone swf, it has probably to do with some background processes flash is running during the test (Auto-saving or whatever). Try to close the FlashPro IDE before running your swf file, you should get at least the performance that you get inside a browser.
How do you close the the FlashPro IDE? Another thing, I used a macbook pro to create the flash project and I emailed my .swf to my pc and it plays perfectly. On my pc I converted the .swf to a .mov and put it back on the macbook and it plays jerky through quicktime and imovie on the macbook. Seems really strange.