Labelled as: Either RGB
or YUV, YPbPr, YCbCr or Y/B-Y/R-Y.
Some U.S. and Japanese
players output interlaced component YUV
video via 3 Phono or BNC connectors
European players usually
provide RGB via scart or 3 Phono.
80% of European TV may
lose control of colour saturation.
Note: RGB (European) and
YUV (US) are non-compatible variants of component video.
A transcoder is needed to link up the YUV player and RGB
DVD stores a component video signal in
digital format. Since this is the native video format that
is stored on DVD, this is also the best format to use to display
the picture, if your equipment is capable of dealing with
this type of signal. In Australia, virtually no equipment
exists that is compatible with a component signal, though
there is some that is compatible with an RGB signal. Many
DVD players are capable of converting their native component
signal to an RGB signal, but this varies on a player-by-player
Problems with the Component signal
As discussed above, DVD stores its video
information in the component form, but unfortunately the great
majority of us cannot take advantage of this format. The designers
of the DVD format anticipated this, and made allowances for
it in the specification. All DVD players are capable of downconverting
a component video signal into a more suitable format for display
on the current generation of consumer display devices. The
first such downconversion step is to S-Video, which
is a connector that will always be found on any DVD player.
What comes out of a TV camera?
A TV camera outputs a video
signal that is split into the three primary colours; red, green and
blue (RGB). The entire
colour spectrum can be represented by varying intensities
of these three colours. This signal needs to be modified before
it can be further processed or broadcast. Why?
RGB signal has two specific problems associated with it in
the professional video world. Firstly, it has a very high
bandwidth. Secondly, the colour and the black and white picture
information are combined within the RGB signal. This is dealt
with in the professional video world by converting the RGB
signal into a component
signal, also referred to as
signal. The Y
of this signal is the black and white information contained
within the original RGB signal. The Pb
signals are colour difference
signals, which are mathematically
derived from the original RGB signal. For our purposes, it
is sufficient to understand that the Y
full bandwidth black and white picture information, and the
colour difference signals contain bandwidth reduced colour
It is important to realize
that component video output and RGB video output
are not the same and are not directly compatible with
each other, however, they are easily converted either way
using a transcoder.