Ulead VIDEOSTUDIO 11 User Manual page 149

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ULEAD VIDEOSTUDIO USER GUIDE
HD DVD (High Density Digital Versatile Disc) Developed as a standard for
high-definition DVD, HD DVD is similar to the Blu-ray Disc, which also uses a 120
mm diameter optical data storage media and 405 nm wavelength blue laser.
Digital Versatile Disc (DVD) is popular in video production because of its
quality. Not only does it guarantee superb audio and video quality, it can also hold
several times more data than VCDs and SVCDs. DVDs make use of the MPEG-2
format, which has a much bigger file size than MPEG-1, and can likewise be
produced as single or dual-sided, and single and dual-layered. They can be played
on stand-alone DVD players or on the DVD-ROM drive of your PC.
Video Compact Disc (VCD) is a special version of a CD-ROM that uses the
MPEG-1 format. The quality of the exported movie is almost the same, but usually
better than VHS tape-based movies. A VCD can be played back on a CD-ROM
drive, VCD player, and even on a DVD player.
Super Video CD (SVCD) is commonly described as an enhanced version of VCD.
It is based on MPEG-2 technology with Variable Bit Rate (VBR) support. The typical
running time of an SVCD is about 30-45 minutes. Although you could extend this
to 70 minutes, you will have to compromise sound and image quality. SVCDs can
be played back on stand-alone VCD/SVCD players, most DVD players, and all CD-
ROM/DVD-ROM with a DVD/SVCD player software.