Does PowerCinema 4 support analog capture function?

Yes, PowerCinema 4 supports analog capturing. But it is still up to the specification of TV tuner card and PowerCinema program. In general, 4.00.1723 or later version support this function. But some bundled versions may remove this function. I would recommend that you update PowerCinema program if the patch is available.
For bundled version, please contact OEM vendors to get latest patch program.

The following patch programs may not fully suitable for all. Please check its update information accordingly. Or you can check here:
http://www.gocyberlink.com/multi/download/patches_12_ENU.html