User manual

Glossary
Nero Recode 66
Deinterlace
The deinterlacing process converts interlaced video files into complete frames (progressive),
since computer displays and modern televisions do not work with the deinterlaced system
anymore, but rather with complete frames.
Encode
Encoding refers to creating a video in a defined video format, e.g. MPEG-2 or Nero Digital™
(MPEG-4) through data compression. A corresponding encoder is required for each video
format.
GOP
A Group of Pictures refers to a group of consecutive individual pictures in the picture flow of
a video file. Each movie or video flow consists of consecutive GOP's. The viewable individual
pictures are generated from them.
Interlace
The interlacing process, which is used to display a TV picture in PAL standard, displays two
half frames in succession. As the frame is generated, only the odd lines from the output de-
vice are displayed for the first half frame. When this is complete, the second half frame is
generated from the even lines. The two frames are encoded separately. The relatively high
refresh frequency means that the eye picks this up as a single frame.
Lanczos interpolation
Lanczos interpolation refers to an image enlargement method. The method was developed
according to an algorithm created by Cornelius Lanczos. This interpolation method provides
high quality and good sharpness levels. However, the actual visual resolution of the images
is not increased.
Letterbox
Letterbox refers to an aspect ratio transferring method with which, e.g. a video file with 16:9
aspect ratio is adjusted for the 4:3 television aspect ratio. Black bars are placed above and
below the picture.
Macroblock
A macroblock refers to a block consisting of 16x16 pixels, and constitutes the basic unit in
the MPEG standard, on which motion encoding is based as well. A macroblock contains in-
formation regarding the brightness and color distribution of a video picture.
MPEG-2
The Moving Picture Experts Group defined this industry standard for video and audio co-
decs. There is little difference between MPEG-1 and MPEG-2: MPEG-2 is a broadcast stan-
dard and better for televisions that are interlaced. MPEG-2 is used as a video format for
DVDs.
MPEG-4
The Moving Picture Experts Group defined this industry standard for video and audio co-
decs. MPEG-4 is the latest MPEG standard for video and audio. MPEG-4 combines several