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Annex: Digital Video and Data Storage 367
http://pro.magix.com
miniDVD
The miniDVD is nothing more than the DVD data format burned onto a CD-
ROM. Thus the MPEG-2 encoder and all other specifications of the DVD data
format are used, and only the data carriers are different. Because the CD-ROM
can only save about a sixth of the quantity of data a DVD can hold, the
capacity of a miniDVD is accordingly limited to approx. 20 minutes of movie.
MiniDVDs are particularly suitable for playing on the computer. For stand-alone
devices they must be tested on an individual basis as to whether the device
can handle the DVD format on a CD-ROM.
AVCHD disc
Use this format to create a high-resolution video. You can burn Blu-ray (BD-
R/RE) blanks as well as conventional DVD±R/RWs. In contrast to Blu-ray Discs
(view page 367), MPEG-4/AVC codec (view page 371) is applied as the video
format, which
requires less memory at a comparable image quality.
Compatibility
AVCHD disc on Blu-ray blank: Since this is a BD-conformant format, the disc
created can be played back in any conventional Blu-ray player. Playback
problems can almost always be traced to incompatibilities between Blu-ray
blanks and Blu-ray players. In this case, consult the instructions for your Blu-
ray player or ask the manufacturer which blanks are compatible with the
device.
AVCHD disc on DVD blank: The DVDs created with AVCHD video are not
supported by all Blu-ray players. The behavior of the devices is quite different.
Normal DVD players cannot replay AVCHD discs, since the AVC format is not
supported.
Blu-ray Disc
Since early 2008, Blu-ray Discs are viewed as successors to DVDs and offer
especially high storage capacity of up to 27 GB in a single layer (double-layer
up to 54 GB) with very few write errors.
The term Blu-ray Disc comes from the blue color of the laser. Because a color
cannot be registered as a trademark, the letter "e" was removed from the word
"blue".
The high storage capacity of the Blu-ray Disc suits high definition videos and
slideshows in high quality perfectly, since these are characterized by large file
sizes (depending on material approximately 40 MB/sec) and very high memory
use. The MPEG-2 codec is used to create video.