Avermedia AVer MediaCenter Uživatelský manuál stáhnout pdf (Strana 60)

Appendix

¾ Glossary

AV I

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

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Avermedia AVer MediaCenter Uživatelský manuál Strana 60