I use a
Hauppauge WinTV Primio-FM card in my PC. It is a BT881-based PCI board but it doesn't feature hardware encoding. With a medium to high-end PC, you won't need to pay the extra for hardware encoding anyway. The card has S-Video, Composite Video, and aerial inputs. The quality of the picture from any of the inputs is outstanding, but obviously is only as good as the source! For the sound, I bypass the TV card and plug the stereo input directly into my sound card (for quality reasons - less connections!). The spec of my PC is in my sig below.
I use
Showshifter 3 to capture live inputs from my VCR and NTL cable box through the Composite Video input into
DivX 5.11 video (the video is captured at a resolution of 640x480 at 25 frames per second and is encoded into DivX 5 at 1100kbps with 'light' clean-up of the source). I then edit the video in
Virtual Dub to remove adverts and trim the beginning and end.
I have converted a large percentage of my VHS collection and have also recorded hundreds of programmes from digital TV to DiVX AVI files with relative ease. Using the above setup, the quality of the video is outstanding, almost as good as DVD!
Virtual Dub can do most if not all of what you have mentioned and is free, I've never needed to try an alternative such as Adobe Premiere.
Steve.
PS. Having a TV card with a S-Video input also means that you can use the highest quality output available from an Amiga CD32!