Embedding SWF in web page with linked MP4 files

If the content is loading the videos from a path relative to the SWF, then it should work in theory.  You could confirm that by disassembling the SWF if you don't have source.

A couple things might help:

- Install a content debugger variant of Flash Player to see if any useful error messages are displayed (the release Flash Player suppresses content error dialogs)

- Look in your browser's developer tools to see if the videos are getting loaded, or if there's just something simple like an underlying network issue (missing mime-type, etc) that's causing the requests for the videos to not be fulfilled correctly

- If the requests for the videos aren't getting made at all, then something a little more nuanced is going on, but in those cases, my guess is that the SWF is hard-coded to load those videos from a specific host and path that isn't the domain where you're hosting the SWF.  Again, a SWF disassembler (I'm a fan of SWFWire Investigator) should make that pretty plain.