46 Personal Video Recorder

Video

IBP

Minimum

I-Frame

Minimum

Frames

CPU

Only

CPU

Format

(Mbps)

Required

(Mbps)

Required

 

 

 

 

 

 

160x120

1.0

P200-MMX

1.0

P200-MMX

352x240

1.5

PII-266

2.0

P200-MMX

320x480

3.0

PII-400

4.0

PII-266

640x480

4.0

Athlon 600

6.0

PIII-450

720x480

4.0

Athlon 700

6.0

PIII-450

 

 

 

 

 

Mbps = Megabits per second, or millions of bits per second. 1 Mbps is approximately 125Kbytes/second.

If your system is not capable of achieving smooth-looking video, try the following:

Record I frames only.

Record using a smaller frame size.

ATI VCR is best suited for Personal Video Recorder use.

MPEG-1 decoders are widely used, so video encoded in MPEG-1 format can be played on many PCs. However, MPEG-1 playback on a PC uses the Microsoft MPEG-1 decoder, which may not provide the best performance.

MPEG-2 playback on a PC requires an MPEG-2 decoder. With ATI graphics cards, MPEG-2 decoders use the ATI hardware IDCT and motion compensation, which provides higher resolution video playback and less CPU loading than the Microsoft MPEG-1 decoder.

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ATI Technologies P/N 137-70268-20, ATI Multimedia Center 8.1 specifications 160x120, 352x240, 320x480, 640x480, 720x480