User manual

Annex: Digital Video and Data Storage 63
For this, the playback device needs to be able to support the following formats:
• AVCHD disc: AVCHD 1.0
• AVCHD disc with 50p frames: AVCHD 2.0
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).
Blu-ray Discs come in three varieties:
• Only readable BD ROM (comparable to DVD video),
• rewritable BD-RE (comparable to DVD±RW or DVD-RAM),
• and as a disc that can be written to only once BD-R (comparable to DVD±R).
Interlace
For historical reasons, pictures in a movie are always recorded and transmitted in the
form of two fields, first the lines with even numbers and then those with odd numbers.
These fields are alternatively displayed with a double-frame rate. The (lazy) eye of the
viewer or the processing of the TV tube puts the two frames together to form one.
The output image First field Second field
You normally don’t have to worry about field processing. The video material goes
through the entire processing chain as fields and is exported again as fields or burned
onto DVD or shown on TV when played back on a DVD as a full picture. Only in