Integrated Video Subsystems
visual workstation
The integrated Video Subsystems of the Silicon Graphics 320 and 540 provides state of the art video capture and playback capabilities in its base model configuration.
Base Model Video Specification
| Video standard | CCIR 601 525 (NTSC), CCIR 601 625 (PAL), SMPTE 259M |
| Video Input | 1 x Composite Video, 1 x S-Video (Y/C) |
| Video Output | 1 x Composite Video, 1 x S-Video (Y/C) |
| Video Capture Rate | 29.97 fps for 601-525 timing, 25 fps for 601-625 timing |
| Capture Area | Arbitrary Clipping, including 720 x 486 (525) and 720 x 576 (625) |
| Output Placement | Arbitrary Placement, including 720 x 486 (525) and 720 x 576 (625) |
| Square-Non-Square Pixel Conversion on Input & Output | Hardware Mitchell Filter, including 640 x 486 (525) and 768 x 576 (625) |
| Downscaling on Input | Arbitrary Scaling Ratio |
| Controls | Brightness, Contrast, Saturation, Hue, Sharpness, Gain Control |
Application Support
| Video For Windows | Video In for all formats. Video Out for UYVY format |
| QuickTime (3.0.2 or higher) | Full support of Video In, Video Out and Video Effects Components |
Uncompressed capture/playback minimum configuration requirements
Formats for Real-Time Video Capture/Output
| Video for Windows Capture | Video for Windows Video Output | QuickTime Capture | QuickTime Video Output | |
| RGB uncompressed | 32-bit BGRA 16-bit BGRA |
N/A | ‘BGRA’, 'ABGR' | 'BGRA', 'ABGR' |
| YCrCb uncompressed | UYVY | UYVY | ‘2vuy’ | '2vuy' |
| JPEG | N/A | N/A | ‘mjpa’, ‘jpeg’ | 'mjpa', 'jpeg' |
| DV | N/A | N/A | very soon | 'dvc ', 'dvcp' |
Our YCrCb support expects the components to be in CCIR 601 nominal range.
The Silicon Graphics optimized JPEG compressor/decompressor can provide up to 1.5 MB/s data rate in real time. The Silicon Graphics optimized DV decompressor is compliant to industry-standard DV specification, interoperable with consumer DV cameras. These software modules come installed on all base model configurations, and is accessible via the Video for Windows and QuickTime components.
Our QuickTime components support requires QuickTime 3.0.2 or higher revision.
Real Time Video Effects
RealTime video effects (3D DVEs) support is provided via our QuickTime effects component.
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