Question: What tools have you already tried to use to convert the mpg files to qt? I'm not familiar with VCDgear. I assume you already tried to use it to do your converstion. Are the mpg files mpg1 or mpg2? It they are mpeg 2 then I'm not suprised that the conversion to vcd didn't work. I believe that VCDGear only deals with mpeg-1 files. I'm not sure though. FYI: VCDs have the following parameters (taken from VCD Helper)
Video:
1150 kbit/sec MPEG-1
352 x 240 pixels
29,97 frames/second
(23,976 frames/second NTSC Film)
Audio:
224 kbit/sec MPEG-1 Layer2
The tools listed hear may be of help-->
http://www169.pair.com/lukifer/dvd.html
There are several tools that will do various conversion/manipulations on mpeg files. I've listed a few below. You can get these at
http://www.versiontracker.com
MPEG Stream Guillotine 0.2b - Fixes MPEG-2 files with bad headers (it may work for mpeg1 files)
MPEG2Decoder 1.4 - Decodes MPEG-2 files into usable QuickTime movies
Movie2MPEG 0.1d6 - QuickTime movie to MPEG-1 converter
MacMPEG2Decoder 1.0b5r2 - decodes MPEG-2 files into QuickTime movies
bbDMUX 1.0b-d1 - MPEG 1/2 demultiplexer into the original component streams
From your message it seems like your trying to go from PAL to NTSC. To do this you may need a more advanced tools such as: Media Cleaner MPEG Charger from
http://www.terran-int.com. It's expensive ~$1,100. But from the description on their website, it sounds like it'll do what you're looking for.
From terran website:
"Cleaner MPEG Charger is the software-only MPEG encoding option for Cleaner 5. Charger integrates seamlessly with Cleaner 5, adding comprehensive control over MPEG-2 encoding and enhancing Cleaner 5's MPEG-1 and MPEG-2 support with variable bitrate encoding. Use Cleaner 5 and Charger to turn all popular video, audio and animation file formats into MPEG streams for DVD Video, Video CD, CD-ROM, digital broadcasting and broadband webcasting. Together, Cleaner 5 and Cleaner MPEG Charger enhance your MPEG-enabled streaming workflow."