Chromakey | FOCUS Enhancements MX-4DV guide

CHAPTER 10

CHROMAKEY

Using Chromakey you can combine two completely separate images to create a composite image that might be impossible to create any other way.

You’ve probably seen the chromakey effect used in television weather reports. The weather person stands in front of a “blue screen” (a solid blue background) and the weather map then keys onto the background from some other source.

Chromakey combines two sources to create a composite image.

1One source has a solid colored

background, such as a blue screen.

2The other source can be any video

image.

3The chromakey effect replaces the solid colored background in the first image with the video

signal from the second image. The second image replaces the background only where the designated color appears.

Chromakey requires careful preparation of the input sources to achieve the desired effect. Keep the following points in mind:

Image 99

FOCUS Enhancements MX-4DV manual Chromakey

Contents

Page Disclaimer N T E N T S Glossary Index Contents Introduction Major Features Introduction Common Uses for MX-4 DV MX-4 DV MX-4 DV Package Contents Introduction About this User Guide Technical Specifications MX-4 DV User Guide Quick Start Quick Start Steps Setting Up Preview Screen Press any key to stop the demo at any time Running the Demo To change the color, press BG Color Setting up a TransitionCutting Between Sources Borders and Solid Color Backgrounds Running Transitions Using CUT Transitions Using Transition Categories Other FeaturesChoosing Transitions MX-4 DV User Guide Installing the MX-4 DV Preview and Program Monitors Sources and Output Preview Monitor Program MonitorNumber of Monitors Understanding MX-4 DV Connectors MX-4 DV Rear Panel Power Connector To connect the power cord and transformerCables and Adapters Microphones Good BAD Correlating Input Sources to MX-4 DV Jacks Installation Examples Using Headphones VCR Selector SwitchesGeneral Notes Post Production Configuration Preview Monitor Live Broadcast Configuration Preview Monitor To connect a microphone Using a Microphone with MX-4 DV Basic Operations Understanding the Keyboard Starting and Stopping the MX-4 DV MX-4 DV Keyboard MX-4 DV User Guide Changing the Display Configuration Using the Preview Screen Active Source Highlights Input Source Previews Color Selector Transitions MenuSelected Transition To identify the Current and Next sources Using Current and Next Sources Selecting Sources Using the VIDEO/AUDIO Selector To do this type of mixing Swapping SourcesSimple Cuts Swapping Between Two Sources To switch sources using this method Default Colors and NumbersWorking with Colors To make the selection Using Color BackgroundsIdentifying Colors Changing Colors and Styles Using Borders Creating Custom ColorsTo create a custom color To specify border color Border Styles DefaultsTo change a border style setting Changing Border Styles Move shadow down Keys for Changing Border AttributesPage Transitions To run a transition Basic Transition Concepts At this point, you can do one of the following Transition Category Buttons Transition Categories and Menus Shapes Transitions Category Basic Transitions CategoryEdges Transitions Category Misc. Transitions Category To restore the default set of transition to the User menu Changing User Transitions MenuTo change a transition in the User menu Setting the Current Source Setting the Next SourceSelecting Transition Sources Using the Transitions Menu Selecting TransitionsTo select a transition from the Transitions Menu To select a transition using transition numbers Using Transition Numbers To change the transition’s speed Adjusting TransitionsChanging Transition Speed Changing Transition Direction To reverse a transition To invoke the Auto-Reverse feature To run a transition automatically at a predetermined speed Running TransitionsRunning Transitions Automatically Running Transitions Manually Input Effects Input Effects Menu Input Effects Mode Key Combinations Main Mode Input Effects Key CombinationsSpecial Key Combinations To apply a parameter value Using Input Effects Posterize Flip HorizontalParameter Values Zero or one To use Color Correct MosaicColor Correct Color NEG Strobe Video AdjustmentChromakey Flip VerticalPage Functions To run the demo To run the demo in Locked modeDemo Running a Locked Demo Display Two Channel SHIFT+2 Setup Menu Navigation Keys Setup Force Field Freeze GPI Out ModeAudio Mode Dual Monitor Mode Route Configuring the MX-4 DV To change the routing Changing the Routing Example Changing the Routing To route audio through the Color or Background Channels Routing Audio Through Color or Background Channels Sub-Route Menus Background Graphics Menu Solid Color Gradients BackgroundsMenus Learn Field and Frame Freezes ComposeAudio MIX Freeze Major Freeze Functions Freeze ExamplesTo use Freeze with Single Source Editing To create a still montage MX-4 DV User Guide Pips To create and apply a single PIP Single PIPBackground Tile Foreground Tile Position Manipulating PIPs Tiles Manipulating PIPs Mask Using Other Effects with Single PIPs To create a multi-PIP image such as the one shown above Multi-PIP Screen Configurations To use the Freeze effect with Multi-PIPs Using Freeze Effect with Multi-PIPs Compose Backgrounds Basic Composition Steps Manipulating Tiles Foreground Tiles Sizing Tiles Composition Rules To create a composition Creating a Composed Image Exiting from Compose Mode Playing the CompositionTo play a composition on the output device Chromakey Preparing the Background Footage Preparing the Keyed Footage Preparing the Chromakey FootageTo prepare the chromakey footage Chroma Key Cursor Fine-Tuning Key Colors Performing the Chroma KEYEnding Chroma Key Page Create a Learned Environment Learn Mode 102 Learned Environments Learned Scripts 103To create a Learned Environment Using Learn Mode Learn mode involves the following steps104 Other Useful Information Aborting a Playback Session105 Page Working with Audio 108 Audio Devices YOU can USEWays YOU can Control Audio Controlling Audio Transitions Audio Accompanies Video Ways to USE AudioSelecting Audio Sources 109 110 Continuous AudioTo use continuous audio 111 Using the Audio Mixer Audio Mixer Controls Using Background AudioAdjusting Audio Levels 112 113 Using HeadphonesUsing the Analog Audio Adjustments Function Advanced Audio Steps Selecting Manual Levels Selecting Audio DelayTo adjust the audio delay for your analog sources 114 Advanced Operations To display the built-in color bars Using TitlesUsing Color Bars 116 Roll Edits Performing Roll Edits117 Cutting Between Scenes 118 Transitions to and from Solid ColorsTo run this type of transition Transitions to Modified Sources Operating in Live EnvironmentsSecurity Monitoring 119 120 Using a GPI Device Instructions for Building a GPI Trigger 121Parts Required 122 Resetting the MX-4 DV Factory DefaultsUsing a GPI Trigger Device To reset the MX-4 DV to its factory defaults Connecting with Ethernet 123To connect to a network Static IP IP Setup for a Computer or Laptop 124Select Local Area Connection and click Properties 125 126 127 128 To connect to a network Dynamic IP 129 Transferring Files to or from the MX-4 DV 130 131 Updating System Software Information About FTP Clients 132 133 134 Transitions List 136 Basic Transitions Basic Transitions 137 Descriptions of Basic Transitions 138 139 140 BRC 141 BLC 142 143 Edge Transitions 144 Misc. Transitions 145 Shape Transitions 146 147 148 149 150 151 Horizontal Compress A/Wipe BHorizontal Compress a to L edge Expand B from edge Page Dual TBC Mode Time Base CorrectorVertical Interval Data 154 TBC Technical Information Preview Image Quality Video Quality 156 Video Scaling ArtifactsFreeze Quality Video Processing Artifacts MX-4 DV Technical Specifications Technical Specifications Effects 158 MX-4 DV Defaults to Y/C on All 4-Channels Help for Mxpro DV UsersTransitions Organized Differently 160 Composite Video RollBetacam Camcorder Video Time CodeVideo Editing D E Index Strobe