This is from flip4mac's website: " There are reports that, with the update to 10.4.5, the installation of Flip4Mac will work on Intel Macs. We are being told that you can force QuickTime to run in Rosetta by clicking the QT icon, Getting Info and checking the "Run in Rosetta" box. Although we have not been able to confirm these reports, it may be worthwhile to try this! "
This statement is dated Feb 17, three days after 10.4.5 release. Despite the ease of the described procedure, they were not able to check it themselves for three days, which leads me to believe that they do not have an intel Mac in their posession. If that's the case, it'll be a long while before an Intel or universal binary is released.