Please especially in case of OneCD encodings, ... do not encode your mpegs at 29,97FPS and full hight (480). In my opinion this means trashed quality ...
Read my posting:
http://www.kvcd.net/forum/viewtopic.php?t=5729
Theres explained why in case of NTSC we should convert at 23,97 FPS.
By doing this you have to add a puldownflag to your MPEG2! stream.
We know that mpeg1 gives us more compression and so better Quality, but its in no relation to a 23,97 FPS amount of videoinformation we have to encode as if encoding at 23,97 using mpeg2.
Well in my opinion I don't understand the usage of mpg1 when encoding using full hight (480px) NTSC streams and muxing them in BBmepg as SVCD VBR.
Progressive NTSC Streams = encoding at 23,97 incl. pulldown (mpeg2 needed)
Interlaced NTSC streams = encoding at 29,97 (mpeg2 needed to maintain interlacing).
So I changed my opinion in case of NTSC to keep interlacing when encoding just to avoid "blending"-blur in case of deinterlacing.
There exist a lot of adaptive deinterlacing plugIns to receive a very good deinterlacing quality.
Well, ... I think this "thought" is correct. ........ hmmmm
Ok VCD 352x240 @ mpeg1 does not allow 23,97 pulldown and no interlaced streams ... so I refer to 1/2 DV Sizes like 352x480 and so on