Welcome to TechIMO!
Wouldn't be downloading a pirated movie streamed from a satellite or Internet site would ya'? :/
Anyway, you have probably stumbled upon the Transport Stream container format. These are essentially Advanced Television Systems Committee stream files, thus they are often captured digitally from a network style source, such as digital satellite. This format is popular for HDTV sources.
The movies are likely MPEG-2 encoded. The format is similar to the PS format VOB files found on DVDs, though TS is optimized and restructured for delivery over a networked connection instead of fixed physical medium.
For a software player, VideoLan should play the files assuming you have the proper decompression codecs installed (likely MPEG-2).
http://www.videolan.org/
Now to VCD conversion. Here is the fun part! I just let ya' read the process, as you will need a few specialized applications to get everything working. I have a dedicated video filtering system, and I probably don't have half of these apps installed myself.
http://forum.doom9.org/showthread.php?threadid=49349
Related information...
http://www.inmatrix.com/articles/atsc.shtml
Now for possibly the worst news. Those might not be Transport Stream files at all. They could also be TeleSync formatted. TeleSync is used as a source format for camera's at theaters. If your files are TeleSync, then the best I can say is good luck on ever converting the files. The source quality will be horrid on a CRT or LCD display, and the output quality would probably be worse assuming it was possible to convert the format, even with the use of appropriate intermediate and post filtering routines.
And finally, as an avid fan of the A/V profession, I hope you are not pirating a copyrighted film. :/
Robert Richmond