X3

342 Annex: Digital Video and Data Storage
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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 342), MPEG-4/AVC codec (view page 346) 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.
Companies that were involved in developing Blu-ray technology have united
themselves into the Blu-ray Disc Association (BDA).