AVerMedia AVerTV Volar Hybrid Q MTVVOLARQ User Manual
Product codes
MTVVOLARQ
Appendix
83
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Glossary
AVI
AVI is the most common video file format for
playback on the computer. It can be saved in
uncompressed form if you want high quality
video, or compressed using any of the available
codecs if you want to minimize the file size.
Aspect Ratio
Aspect ratio indicates the ratio of the width of an
image to its height. The two most common
aspect ratio of home video is 4:3 and 16:9.
DVD
When you choose this format, the recorded
video file will be saved in MPEG-2 format that is
compliant with DVD standards. Standard DVD
frame size and frame rate are 720 x 480 pixels at
29.97 fps for NTSC and 720 x 576 at 25 fps for
PAL.
DxVA
DxVA stands for DirectX Video Acceleration,
which is an application programming interface
(API) defined by Microsoft. It allows decoders to
accelerate video playback directly on the
graphics processors instead of the main CPU.
This means DxVA technology can reduce the
CPU usage.
H.264
Videos compressed using MPEG-4 standard are
two or three times more efficient than MPEG-2.
This format can be applied to a wide variety of
applications or networks and systems like
HD-DVD, Digital TV, Broadcast and Streaming
applications.
Hibernate
Hibernation is a state in which your computer shuts
down to save power but first saves everything in
memory on your hard disk.
iPod
A video format base on H.264 standard but has
smaller video bit rate. It’s an iPod -compatible
format.
MPEG-1
Choose MPEG-1 format for video files that are
intended for CD-ROM playback on a computer or
for Internet transmission. MPEG-1 allows file
compression and offers VHS quality picture. Just
about every system available today can play
MPEG-1 and does not need special software or
hardware.
MPEG-2
Videos compressed using MPEG-2 have
extremely high quality pictures and full
CD-quality sound. Choose MPEG-2 format for
video files that are intended for DVD-ROM
playback on a computer or if you want
broadcast quality videos.
PIP (Picture in Picture)
PIP allows you to view two or more video
sources at the same time wherein the small inset
screens overlaid on the main screen.
PBP (Picture by Picture)