I/O Magic PC PVR Desktop TV/Personal Video Recorder - Manual (Page 43)

I/OMagic PC PVR
User’s Guide
- 43 -
Video Option
PowerVCR is able to control video formats and options for the WDM (Windows
Driver Model) drivers, so its settings will be disabled. However, if the Video
for Windows driver is being utilized, you may modify various options, formats
and the source depending on the manufacturer. All options below may fall
below any type of the following categories: Video Format, Video Source,
Video Display, etc. Listed below are some of these possible categories:
• Many options concern the capture format. Read the previous sections
and the paragraph below for more information.
Info: RGB is an additive color model (color system) consisting of the three
primary colors red, green, and blue. YUV is a color encoding-scheme for
natural pictures in which the luminance and chrominance are separate. The
human eye is less sensitive to color variations than to intensity variations, so
YUV allows the encoding of luminance (Y) information at full bandwidth and
chrominance (UV) information at half bandwidth. The YUV color model
luminosity and color values are processed separately. The YUV values are
calculated by addition or subtraction of specifically formed RGB values. RGB is
the default setting with 16 bit (the higher the bit, the better the quality but
with more memory consumed).
• For video source, choose the appropriate input such as SVHS, S-Video,
TV tuner, composite, etc.
• Some allow field order (even versus odd fields first) selections. These
do not have to be altered and do not impact the codecs.
• Output size or the image size of your video display is a prevalent
option. The larger the size, the more it will consume CPU resources so
select according to available resources.
Note: If you have modified the image size (output size) here, and the setting
is different from that of your recording profile, the profile's output size will
always act as the default. Go to
Video Signal Formats
for more details.
• Some allow adjustment of brightness, hue, color, and saturation. Click
on the slider and drag.
• You may also choose the type of video signal. Refer to
Video Signal
Formats
in selecting the appropriate one.