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- From: h9265058@hkuxa.hku.hk (Wong Yui Alex)
- Subject: FAQ: VIDEO CD AND MOVIES OF HK (JUNE '95)
-
- *2.1 What is MPEG ?
-
-
- MPEG (Moving Picture Image Coding Experts Group) is a new technology,
- under which video image can be digitalized and greatly compressed. The typical
- one is MPEG-I. MPEG-I can compress the video signal at a ratio of 1 to 100,
- and 1 to 6.5 for audio signal. FULL SCREEN video images can be replayed in
- 30 frames per second.
- The MPEG-I is a combination of System, Video, Audio. According to
- ISO CD 11172 standard, resolution of MPEG-I 352x240 (Ameiran), or 352x288
- (European) with 192KB/s transfer rate.
-
-
- "... TV quality image, CD quality sound..."
-
-
- 2.2 What is Video CD ?
-
-
- Video CD is a 5 inches disk, looks like a traditional CD, which
- contains compressed digital audio and video signal that can be viewed
- on TV or computer screen after decoded. Under compression by MPEG-I,
- a Video CD can store up to 74 minutes full screen movie.
-
-
- 2.3 Can Video CD overtake LD?
-
-
- Although, in fact, the quality of Video CD can only compare with
- a HQ VHS tape, there are several advantages of Video CD:
-
- 1. LOW PRICE - Cost of production, and hence the price, of Video CD
- is much lower than the LD, people are able to buy a Video CD at a
- price of audio CD nowaday.
-
- 2. EASY TO CARRY AND STORAGE - imagine how you deal with a CD.
-
- 3. MULTI-FUCTIONAL - Though video CD is mainly for movies collection,
- it is capable for Karaoke, MTV, cartoon, education, etc.
-
- 4. DURABLE - Unlike VCR tape, Video CD does not deteriorate due to
- high moisture and frequent replay.
-
- 5. Multi-Channel - Similar to LD, Video CD provide more than one
- channel for audio signal, it can be Stereo, Muti Audio or
- Bilingual. (Mono, you may sugguest)
-
-
-
- 2.4 How to view Video CD ?
-
-
- As I mentioned before, Video CD can be played in a computer or on TV.
-
- For PC
- ------
- - A MPEG decoder boards is recommended
- - A single or double speed CD-ROM
- - Minimum CPU requirment vary from 386 to 486SX
- - VGA monitor
-
- For TV
- ------
- - A MPEG decoder machine
-
-
- *2.4.1 Why MPEG Decoder Boards? Can't I use software to do the job?
-
-
- Some software can play MPEG files without Decoder Boards. You may
- have tried XingIT or VMPEG. These program can play tiny MPEG-I files.
- However, if you are asking for the playback of VCD, the answer is NO...in
- common configuration of today.
- "If I have Pentium 100, 32MB Ram, 6x CD Rom Player..., can I..."
- Well, why bother if you are rich?!
-
-
- *2.4.2 How to select a correct PC MPEG Decoder Boards ?
-
- These are the criteria in selecting a good MPEG Decoder Board:
-
- - Can it works in both Dos and Windows environments?
- - Can VGA signal overlaid with MPEG Screen?
- - Does it provide track selection function which is used in
- playback of Karaoke?
- - Is it too long?
- - Does it have S-output and AV output?
-
- In the U.S.A, the following MPEG card is quite typical and economical.
- According to the Digital Video Magazine (May 95), the properties and the price
- are listed below:
-
- Min CPU RAM(MB) CD-ROM Display Price(US$)
- ======= === ====== ======= ==========
- Video Blaster 386DX/33 4 2X 32000 349
- MP400
- (Creative Lab)
-
- MPEG Master 486/33 4 2X 24-bit 349
- (Visionetics
- Int'l)
-
- VICPlayer 486SX 4 2X 24-bit 349
- (VIC Hi-Tech
- Corp.)
-
- Full Video 386SX/25 2 1X 128000 329
- Elite
- (Digital
- Equipment
- Corp.)
-
- MPEG Real 386 2 2X 24-bit 299
- Video
- (MRV Comm.)
-
- OptiVideo 386 4 2X 24-bit 895
- MPEG
- (OptiVision
- Inc.)
-
- MovieWave 386DX 4 1X 24-bit 329
- Studio
- (Multiwave
- Innovation)
-
- "The quality of the playback is really based on the quality of the encoded
- MPEG file,... I found the playback quality of the same MPEG file to be
- almost identical in quality among these boards," Steven Blaize.
-
-
-
- *2.4.3 How can I get a high quality MPEG board with a lower price ?
-
-
- Price is important to the customers. For similar quality, MPEG board
- produced in Taiwan is more affordable. I am not saying that you must
- by a Taiwanese board. You must also consider the difficulty of maintance
- and technical support of the product.
-