CineView Pro LE是一个入门级的4:2:2的MPEG-2解码器,在可以承受的价格范围内提供了最高质量的专业性能。CineView Pro LE可以运行于Windows NT和Linux操作系统下。它在一块半长规格的PCI板卡上配有模拟复合(PAL/NT-SC)视频输出,平衡式模拟立体声音频输出以及一个GenLock同步输入。CineView Pro LE可以在计算机的VGA显示器上输 出MPEG-2解码的视频。具有板上的MPEG数据流解析功能和同时支持播放4:2:0和4:2:2形式MPEG-2数据流的能力。CineView Pro LE的开发工具包括一个非常全面的32位SDK,一个MPEG播放器的演示应用程序以及一些MPEG-2演示片段。
CineView Pro LE特性 :
· 运行于WindowsNT4.0下
· 可以在VGA显示器中播放视频
· 模拟复合视频输出
· 平衡式模拟立体声音频输出
· 支持32KHz,44.1HKz和48KHz等采样频率的MPEG第一和第二层音频的播放
· 板载MPEG数据流解析功能
· 支持最大码率为50Mbps的MPEG数据流播放(具体性能依赖于系统性能)
· 支持多种MPEG数据流方式:MPEG-1系统数据流,MPEG-2节目数据和MPEG-2传输数据流
· 支持播放嵌入于MPEG-2格式的节目数据流和传输数据流中的MPEG-1压缩视频
· VGA视频的亮度,对比度及饱和度可进行调整
· 左右声道音量可独立进行衰减调整
· 可重组I,B,P帧的结构
· 提供32位WindowsNT软件开发工具包
· 可以支持多块板卡同时工作
· 支持Linux操作系统
· 有软件选项,可以从MPEG-2数据流直接转编码至MPEG-1数据流(达到帧精确度)
视音频功能 :
· SMPTE 259M component serlal digital video output.
· Video playback on VGA monitor.
· Simultaneous digital AES/EBU and analog stereo audio ·outputs.
· Stereo audio output with individual left/right audio attenuation (63 Steps@2dB/Step)
· MPEG audio layers 1 and 2 at 32kHz, 44. 1kHz and 48kHz.
· Brightness, contrast and saturation adjust.
· Supports MPEG stream types:
MPEG-1 System Streams
MPEG-2 Program Streams
MPEG-2 Transport Streams
· Supports MPEG-1 video compression encapsulated in MPEG-2 Program and Transport streams
· MPEG data rates up to 50 Mbps(system dependent).
· Reconstruction of I, P and B frames.
· Decodes image resolutions
| Decodes image resojutions |
| |
NTSC:
352*240
352*480
480*480
544*480
640*480
704*480
720*480
720*512 |
PAL:
352*288
352*576
480*576
544*576
720*576
720*608 |
视音频特性 :
DIGITAL VIDEO*
· Standard
259M-C:270Mbps, 525/625 component SDI
· Connector
BNC
· Impedance
75 Ohms
· Return Loss
18Db to clock frequency
· Signal Level
800Mv+/-10%
· Rise and Fall Time
400 to 1500Ps (20 to 80% amplitude)
DIGITAL AUDIO*
· Standard
AES3-1992: 110 ohms, balanced
75 ohms, unbalanced
· Connector
15-pin high density
ANALOG VIDEO
Output Level
1 volt peak-to-peak
Frequency Response
NTSC: 0 to 4.0 MHz+/-1 Db
PAL: 5.8 MHz+1,-7Db
Differential Gain
+/-2%
· Differential Phase
+/-1.3%
· Signal to Noise
>65Db, unweighted
· Color Burst Amplitude
NTSC: 40 IRE+/-1 IRE
PAL: 43 IRE+/-1 IRE
· Luminance Level Accuracy
+/-1 IRE
· Chrominance Level Accuracy +/-1 IRE
· Sync Amplirtude
NTSC: 40 IRE+/-1 IRE
PAL: 43 IRE+/-1 IRE
ANALOG AUDIO
· Connector
15-pin high density
· Frequency Response
20Hz to 20kHz +/-0.2Db
· Line Output Level
OVU=+4Db
· Signal-to-Noise Ratio
88Db minimum
· Total Harmonic Distortion
THD+N<0.05%, 1kHz@+4dBm output level
· Stereo Separation
>80Db
电源要求 :
· +5VDC+/-5%@1.7A(typ)
· +12VDC+/-5%@0.15A(typ)
· -12VDC+/-@0.03A(typ)
物理特性:
| EXTERNAL CONNECTORS |
|
DIMENSIONS |
|
· Standard PCI connector
DB-15 high density audio output:
· Balanced analog audio
Digital AES/EBU 110 ohm balanced/75 ohm unbalanced(CineView Pro only)
· BNC composite video output(PAL/NTSC)
· BNC component serial digital video output(CineView Pro only)
· BNC genlock input
|
· PCI half-legth form factor
|
软件开发包 :
· Vela offers a full-featured 32-bit Software Development Kit (SDK) for its CineView family of PCI MPEG-2 decoders.
· The SDK features an Application Programming Interface (API) based on the Microsoft Common ·Object Model (COM) running under the Windows NT operating system. Functions are made available · through a set of COM objects supplied with the API.
· The API offers the developer complete comtrol over the MPEG decoding process and process and provides everythingneeded to integrate MPEG playback capability into a variety of video applications.
· Included with the SDK is a sample decoder player application and source code, as well as a number of sample MPEG-2 clips.
适用领域:
· 广告
· 广播电视
· 视频节目分发
· 后期制作
· 有线电视
· 信息终端(POI)
· 信息终端(POS)
· 新闻收集
· 视频存档
· 远程教
· 视频网络
流程图 :

| COMPARSION BETWEEN OPTIBASE AND VELA DECODER |
| |
Video Plex Plus |
Video Plex Pro |
Cineview Pro LE |
Cineview Pro |
| Chip set |
C-Cube |
C-Cube |
IBM |
IBM |
| 4:2:0 MaxBit Rate |
15
|
15
|
15
|
15
|
| 4:2:2 Max Bit Rate |
Not support |
Not Support |
50
|
50
|
| 4:2:0 Max FD1 resolution |
720X576 |
720X576 |
720X576 |
720X576 |
| 4:2:2 Max FD1 resolution |
Not support |
Not support |
720X608 |
720X608 |
| DVB compliant |
No |
No |
Yes |
Yes |
| Composite |
Yes |
Yes |
Yes |
Yes |
| SDI |
No |
No |
No |
Yes |
| VGA |
No |
No |
Yes |
Yes |
| Closed Caption suppot |
No |
Yes |
Yes |
Yes |
| OSD support |
No |
No |
Yes |
Yes |
| NT 4.0 driver |
Yes |
Yes |
Yes |
Yes |
| Win 2000 |
No |
No |
Yes |
Yes |
| Linux Driver |
No |
No |
Yes |
Yes |
|