ViewCast 240E, 450E manual Granularity, Format Horizontal Vertical

Page 68

Setting Driver Properties

The reference width and height represent the full uncropped size of the incoming video. Your crop settings are interpreted relative to this reference size. For example, if you are capturing 525-line video, with a reference size of 640 x 480, and your crop rectangle is (0, 0, 640, 480), then your video is effectively uncropped. But if you are capturing 625-line video, with a reference size of 768 x 576, the same (0, 0, 640, 480) crop specification truncate the right and bottom edges of the video.

Granularity

Most video data capture formats impose restrictions on the possible width and/or height of the video, referred to as granularity restrictions. For example, the I420 capture format requires that the capture width be a multiple of 4 and the capture height be a multiple of 2.

The granularities for the various color formats are as follows:

Format

Horizontal

Vertical

 

 

 

RGB32

4

1

 

 

 

RGB24

4

1

 

 

 

RGB555

4

1

 

 

 

Greyscale

4

1

 

 

 

YUY2

4

1

 

 

 

UYVY

4

1

 

 

 

I420

4

2

 

 

 

YVU9

4

4

 

 

 

[none]

4

1

 

 

 

[any]

4

4

 

 

 

The Granularity controls show the granularity restrictions for the selected video format, and assist you in choosing crop and output sizes that observe those restrictions.

Figure 58. Capture drop-down list

Because you can set the preview and capture pins to different color formats, they can have different granularities. When you open the Size and Crop tab, the Capture and Preview fields are initialized to the current or most recently used format for the selected pin (Figure 58).

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Contents Osprey 240e/450e User Guide Page Contents AVStream driver reference information Osprey 240e Environmental specifications Osprey 450e Page Limited Warranty OverviewWarranties Reseller Pass ThroughSystem requirements Minimum system requirementsInstallation Steps Installing the driverCustom installing AVStream Installing the video capture cardTo install the video capture card Digital Signature Not Found Window Setting Driver Properties Accessing the Osprey Config UtilityOspreyConfig’s initial processing sequence Initial OspreyConfig user interfaceSelecting a device for configuration Control used to open the properties Understanding the device properties window Osprey Video Device Properties window tabsInput Video Proc AmpVideo Decoder RefSizeOspreyConfig utility to access devices Devices and global controlsInput tab Input tabCancel Video InputVideo Present Video StandardOsprey 450e AV option hardware add-on-device Input tab without AV optionVideo input Osprey 450eVideo standard Video Standard fieldInput Format analog inputs Composite cameraVideoCheck VideoGraphVbiGraph VideoGraphVideo Proc Amp tab Video Proc Amp TabColor Enable PowerLineFrequency Anti Flicker Default BrightnessVideo Decoder tab Video Decoder tabSignal Detected Output EnableLines detected VCR InputHorizontal Delay RefSize tabHorizontal FormatCCIR-601 Horizontal FormatSquare Pixels Horizontal Delay Signal WSSWide Use WideScreenSource Width Source WidthReference Size for Crop and Logo Placement Video Type Format HW or SW Adds CPU GranularityLine Ntsc Vertical Format Line Ntsc Vertical FormatCurrently Using Filters tabSimulStream DeinterlaceSimulStream SimulStream optionMultiple instances Osprey 240e/450e User Guide Adjust… DeinterlaceInverse Telecine Motion AdaptiveBackground − telecine and inverse telecine Currently Using group Current Using settingsFrame Algorithm Adaptive Deinterlace windowMotion Threshold Close Test ModeRestore Defaults Osprey 240e/450e User Guide Device tab No-Video Test Pattern Buffers RequestedDiagnostic logging Diagnostic LoggingTypical section of data Device Info Board NumberingBoard Numbering Setting Driver Properties Extras Timecode Video MarkingClosed Caption TimestampingCaptions tab Captions tabPin Select Render Ntsc Closed Captions On Video Render Logical White AsCC Pin CC PinEnable Logo on File and Color sub Tab Enable Key ColorLogo tab On File and Color Sub tabOsprey 240e/450e User Guide File and Color Pin SelectEnable Key Color Enable Key ColorWeighting Position and SizeOsprey 240e/450e User Guide Size and Crop tab Size and Crop tabEnable Cropping Default OutputReference Size Reference SizeGranularity Format Horizontal VerticalEnable Cropping Enable CroppingRecalc button Default Output Size Default Output SizePage AVStream driver reference information DirectShowAVStream Driver Reference Information Post-Processing mode Post-Processing modeAVStream Driver Reference Information Preview Pin to Overlay Mixer to Video Renderer Efficient Video RenderingPreview Pin to Video Renderer Preview Pin to VMR7 Video Mixing RendererPreview Pin to VMR9 Some Data PointsAVStream Driver Reference Information Video standards and sizes Color formatsYUV format details Captioning via CC or VBI pins Closed captioning CCDirect CC rendering on video CC streaming interface Vertical Interval Timecode VitcVertical Blanking Interval VBI capture Timecode Video MarkingSelecting the audio source and input volume Audio driverAudio Driver Audio properties Audio propertiesAudio configuration Mono Source ModeAudio formats Audio playbackDual Mono Audio level Input reference levelOsprey 240e Appendix a Osprey hardware specificationsEnvironmental specifications Osprey 240e long back plate Osprey 450e Osprey 450e back plateAppendix a Osprey Hardware Specifications Mini-DIN Signal RCA Connectors Appendix B Osprey 450e audio cablePage Scrambled video image Appendix C TroubleshootingColor bars on video screen Cannot play back recorded audio Poor video quality at large frame sizesMultiple horizontal lines across video image Osprey 240e/450e User Guide Page Index Appendix C Troubleshooting Osprey 240e/450e User Guide Viewcast.com
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