Preparing the Background Footage | FOCUS Enhancements MX-4DV

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MX-4 DV USER GUIDE

CHAPTER 10

•The color used for the background must not appear elsewhere in the image. For example, if Kong’s head (in the example above) contains colors close to the chromakey background, the picture of the bridge would appear in those areas. (Professionals often use a special “blue screen” paint for the backdrop when filming the image.)

•The color of the background must be evenly distributed. Glare from camera lights and shad- ows of the subject can alter the background color. MX-4 DV’s chromakey circuitry might not be able to handle the different values, thereby spoiling the illusion.

This chapter explains how to prepare footage for use with the chromakey feature. Of course, screen images appear in grayscale in this book.

Background	Keyed
Footage	Footage
	Chromakey
	Footage

The Background footage shows traffic moving along a freeway or highway.

The Keyed footage, specially prepared, shows our intrepid hero flying against a solid colored background.

The Chromakey footage is the result of combining the background footage and keyed footage using the MX-4 DV chromakey feature.

PREPARING THE BACKGROUND FOOTAGE

Preparation of the background footage does not require anything special. It might be footage of automobile traffic taken from a bridge.

TIP

The more unusual or dramatic the Background footage the greater the final effect of the chromakey.

Image 100

FOCUS Enhancements MX-4DV manual Preparing the Background Footage

Contents

Page Disclaimer N T E N T S Contents Glossary Index Introduction Major Features Introduction Common Uses for MX-4 DV MX-4 DV Package Contents MX-4 DV About this User Guide Introduction Technical Specifications MX-4 DV User Guide Quick Start Setting Up Quick Start Steps Preview Screen Running the Demo Press any key to stop the demo at any time Setting up a Transition Cutting Between SourcesBorders and Solid Color Backgrounds To change the color, press BG Color Using CUT Transitions Running Transitions Other Features Using Transition CategoriesChoosing Transitions MX-4 DV User Guide Installing the MX-4 DV Sources and Output Preview and Program Monitors Program Monitor Preview MonitorNumber of Monitors Understanding MX-4 DV Connectors MX-4 DV Rear Panel To connect the power cord and transformer Power ConnectorCables and Adapters Good BAD Microphones Installation Examples Correlating Input Sources to MX-4 DV Jacks VCR Selector Switches Using HeadphonesGeneral Notes Post Production Configuration Preview Monitor Live Broadcast Configuration Preview Monitor Using a Microphone with MX-4 DV To connect a microphone Basic Operations Starting and Stopping the MX-4 DV Understanding the Keyboard MX-4 DV Keyboard MX-4 DV User Guide Using the Preview Screen Changing the Display Configuration Input Source Previews Active Source Highlights Transitions Menu Color SelectorSelected Transition Using Current and Next Sources To identify the Current and Next sources Using the VIDEO/AUDIO Selector Selecting Sources Swapping Sources Simple CutsSwapping Between Two Sources To do this type of mixing Default Colors and Numbers To switch sources using this methodWorking with Colors Using Color Backgrounds Identifying ColorsChanging Colors and Styles To make the selection Creating Custom Colors Using BordersTo create a custom color Border Styles Defaults To change a border style settingChanging Border Styles To specify border color Keys for Changing Border Attributes Move shadow downPage Transitions Basic Transition Concepts To run a transition At this point, you can do one of the following Transition Categories and Menus Transition Category Buttons Basic Transitions Category Edges Transitions CategoryMisc. Transitions Category Shapes Transitions Category Changing User Transitions Menu To restore the default set of transition to the User menuTo change a transition in the User menu Setting the Next Source Setting the Current SourceSelecting Transition Sources Selecting Transitions Using the Transitions MenuTo select a transition from the Transitions Menu Using Transition Numbers To select a transition using transition numbers Adjusting Transitions Changing Transition SpeedChanging Transition Direction To change the transition’s speed To invoke the Auto-Reverse feature To reverse a transition Running Transitions Running Transitions AutomaticallyRunning Transitions Manually To run a transition automatically at a predetermined speed Input Effects Input Effects Menu Main Mode Input Effects Key Combinations Input Effects Mode Key CombinationsSpecial Key Combinations Using Input Effects To apply a parameter value Flip Horizontal PosterizeParameter Values Zero or one Mosaic Color CorrectColor NEG To use Color Correct Video Adjustment ChromakeyFlip Vertical StrobePage Functions To run the demo in Locked mode DemoRunning a Locked Demo To run the demo Display Two Channel SHIFT+2 Setup Setup Menu Navigation Keys GPI Out Mode Audio ModeDual Monitor Mode Force Field Freeze Configuring the MX-4 DV Route Changing the Routing To change the routing Example Changing the Routing Routing Audio Through Color or Background Channels To route audio through the Color or Background Channels Background Graphics Menu Solid Color Gradients Backgrounds Sub-Route MenusMenus Learn Compose Audio MIXFreeze Field and Frame Freezes Freeze Examples Major Freeze FunctionsTo use Freeze with Single Source Editing To create a still montage MX-4 DV User Guide Pips Single PIP Background TileForeground Tile To create and apply a single PIP Manipulating PIPs Tiles Position Using Other Effects with Single PIPs Manipulating PIPs Mask Multi-PIP Screen Configurations To create a multi-PIP image such as the one shown above Using Freeze Effect with Multi-PIPs To use the Freeze effect with Multi-PIPs Compose Basic Composition Steps Backgrounds Foreground Tiles Manipulating Tiles Composition Rules Sizing Tiles Creating a Composed Image To create a composition Playing the Composition Exiting from Compose ModeTo play a composition on the output device Chromakey Preparing the Background Footage Preparing the Chromakey Footage Preparing the Keyed FootageTo prepare the chromakey footage Chroma Key Cursor Performing the Chroma KEY Fine-Tuning Key ColorsEnding Chroma Key Page Learn Mode Create a Learned Environment Learned Environments 102 103 Learned ScriptsTo create a Learned Environment Learn mode involves the following steps Using Learn Mode104 Aborting a Playback Session Other Useful Information105 Page Working with Audio Audio Devices YOU can USE Ways YOU can Control AudioControlling Audio Transitions 108 Ways to USE Audio Selecting Audio Sources109 Audio Accompanies Video Continuous Audio 110To use continuous audio Using the Audio Mixer 111 Using Background Audio Adjusting Audio Levels112 Audio Mixer Controls Using Headphones Using the Analog Audio Adjustments FunctionAdvanced Audio Steps 113 Selecting Audio Delay To adjust the audio delay for your analog sources114 Selecting Manual Levels Advanced Operations Using Titles Using Color Bars116 To display the built-in color bars Performing Roll Edits 117Cutting Between Scenes Roll Edits Transitions to and from Solid Colors 118To run this type of transition Operating in Live Environments Security Monitoring119 Transitions to Modified Sources Using a GPI Device 120 121 Instructions for Building a GPI TriggerParts Required Resetting the MX-4 DV Factory Defaults Using a GPI Trigger DeviceTo reset the MX-4 DV to its factory defaults 122 123 Connecting with EthernetTo connect to a network Static IP 124 IP Setup for a Computer or LaptopSelect Local Area Connection and click Properties 125 126 127 128 129 To connect to a network Dynamic IP 130 Transferring Files to or from the MX-4 DV Updating System Software 131 132 Information About FTP Clients 133 134 Transitions List Basic Transitions 136 137 Basic Transitions 138 Descriptions of Basic Transitions 139 140 141 BRC 142 BLC 143 144 Edge Transitions 145 Misc. Transitions 146 Shape Transitions 147 148 149 150 Horizontal Compress A/Wipe B 151Horizontal Compress a to L edge Expand B from edge Page Time Base Corrector Dual TBC ModeVertical Interval Data TBC Technical Information 154 Video Quality Preview Image Quality Video Scaling Artifacts Freeze QualityVideo Processing Artifacts 156 Technical Specifications MX-4 DV Technical Specifications 158 Effects Help for Mxpro DV Users MX-4 DV Defaults to Y/C on All 4-ChannelsTransitions Organized Differently 160 Roll BetacamCamcorder Composite Video Time Code VideoVideo Editing D E Index Strobe