when burnt to an svcd, is the svcd a universal format that will play on all players that play svcd's, or do the files need odd codecs sometimes?
No matter what codec you're using to create the file (Xing/TMPGEnc's/Ligos) the resulting file should still be mpeg2 complient in all respects. If it's not, like some of ATI or Creative's bundled codecs can sometimes be, then it won't work anywhere but on a computer that has their codecs.
i want to back up a bunch of old 8mm's, and be sure that in the long future the format is still workable. would it be better for me to burn the files as an mpeg-2 for future reliability?
As above, if they're SVCD, they are mpeg2. With a VCD or SVCD the mpeg file is still on the disc in it's original form, just find the big .dat file, copy it over, rename to mpg and you've got your mpeg back. Even if another encoding standard somehow displaces mpeg2 in the next few years I still have a hard time imagining a computer in the future not being able to work with the mpeg. Not that I think you'd have to, the worst that'll happen is DVD players quit playing VCDs and SVCDs, at which pont you put a couple in the closet like meefmah was saying.
if so, i want to get a card that doesn't import the video into an mpeg format that needs an unusual codec. thanks for the info, please share all ya can.
That's a different issue though. If you're getting a pro level realtime mpeg card then it's an option of course. If you're looking at something like a GF4/ATI AIW - consumer level cards then the ones like ATI's that do mpeg on the fly are what I call handy cards. It's handy for when you want to import some video quick and be done with it, no hours of reencoding to do. But the quality of realtime captures on handy cards isn't as good as recording to uncompressed and then crunching it down later - at which point you can do mpeg1 or mpeg2. Get a DVD-R drive and make those mpeg2's DVD complient and you're almost assured of easy playback for the rest of our lifetimes. (Everyone may not have a record player, or even an 8 track deck, but if you need one it'd take little time to find one. Same with DVD in the furture when we've all gone to something else)
--Mc