Datavideo DVK-400 Instruction Manual
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Datavideo DVK-400 Instruction Manual

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4K CHROMAKEY
DVK-400
Instruction Manual

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Summary of Contents for Datavideo DVK-400

  • Page 1 4K CHROMAKEY DVK-400 Instruction Manual...

  • Page 2: Table Of Contents

    Table of Contents TABLE OF CONTENTSDISCLAIMER OF PRODUCT & SERVICES ..................2 DISCLAIMER OF PRODUCT & SERVICES ........................3 FCC COMPLIANCE STATEMENT ..........................4 WARNINGS AND PRECAUTIONS ..........................4 WARRANTY ................................5 ................................ 5 TANDARD ARRANTY ..............................5 HREE ARRANTY DISPOSAL ................................

  • Page 3: Disclaimer Of Product & Services

    Datavideo Technologies will try to give correct, complete and suitable information. However, Datavideo Technologies cannot exclude that some information in this manual, from time to time, may not be correct or may be incomplete. This manual may contain typing errors, omissions or incorrect information.

  • Page 4: Fcc Compliance Statement

    AC adapter. If you are not sure of the type of power available, consult your Datavideo dealer or your local power company. 8. Do not allow anything to rest on the power cord. Do not locate this unit where the power cord will be walked on, rolled over, or otherwise stressed.

  • Page 5: Warranty

     The product warranty period beings on the purchase date. If the purchase date is unknown, the product warranty period begins on the thirtieth day after shipment from a Datavideo office.  All non-Datavideo manufactured products (product without Datavideo logo) have only one year warranty from the date of purchase.

  • Page 6: Disposal

    Disposal For EU Customers only - WEEE Marking This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment.

  • Page 7: Chapter 1 Product Overview

    The Datavideo DVK-400 4K Chromakey can be used in various live events where primary video sources are either HDMI or SDI. The DVK-400 supports up to 4K videos and is equipped with easy- to-use Spill Suppression and Color Enhancement features.

  • Page 8: System Diagram

    1.2 System Diagram...

  • Page 9: Connections And Controls

    Descriptions The power button can be found on the front panel. Before pressing the power button to turn on your DVK-400, make sure the power switch at the rear of the device has already been turned on. 2.2 Rear View...
  • Page 10 Use an RS-232 to USB adapter cable to connect your laptop to the device directly for remote control. DVIP The DVIP port allows the user to control DVK-400 on a laptop or PC computer from a remote location. Use any Ethernet cables to connect directly to the device or via a router.

  • Page 11: Chapter 3 Basic Setup

    Monitor remote control The DVIP and RS-232 ports allow the user to control DVK-400 on a laptop or PC computer from a remote location. Before establishing connection, the user should first download the User Interface Software from Datavideo’s official website (www.datavideo.com).
  • Page 12 3. Open the DVK-400 User Interface then at the top right corner of the interface, click the “Globe” icon.
  • Page 13 4. On the “CONNECT” window that opens, you will be able to view the device’s network settings. 5. Select DVIP from the “Interface” drop-down menu. 6. Select your laptop’s Ethernet card from the “EtherNetCard” drop-down menu, which is 192.168.100.5 in this example. If this is your first time using the device, click the “Scan” button on the right of the “EtherNetCard”...
  • Page 14 7. From the “IP Select” drop-down menu, select the IP address of the DVK-400 that you would like to connect. Once selected, the Host Name (DVK-400), Mac Address, Address Mode, IP Address and other network settings will be shown. 8. Click the “Connect” button to start connecting to the device. As soon as the connection to the device has been established successfully, you will see the message “Connected”...

  • Page 15: Rs-232 Interface

    PC via RS-232. 1. Use an RS-232 to USB adapter cable to directly connect your laptop to the DVK-400. 2. Open the DVK-400 User Interface then at the top right corner of the interface, click the “Globe” icon.
  • Page 16 4. From the “Comport” drop-down menu, select the device’s corresponding COM port which is COM7 in this example 5. Click the “Connect” button to establish connection. Note: In case of connection failure, check that the cable is properly connected and the laptop’s COM port is not occupied by other software.

  • Page 17: Chapter 4 User Interface

    Chapter 4 User Interface In this chapter, various functions of the user interface will be described. Note: You can also use TPC-700 Touch Panel Controller to control DVK-400. See the TPC-700 user manual for setup instructions. 4.1 Output Source The Output Source row located at the very top of the UI allows you to configure the video source for your output ports.

  • Page 18: Pgm (Hdmi)

    FG: FOREGROUND CAMERA video source. BG: BACKGROUND video source. AUX: Video source connected to the AUX port. Matte: The Foreground’s Luma MATTE (Black = Transparent, White = Solid, Gray = translucent) PFG: Processed Foreground, i.e. the background color of the foreground image will be gray or color reproduced.

  • Page 19: User Memory

    FG: FOREGROUND CAMERA video source. BG: BACKGROUND video source. AUX: Video source connected to the AUX port. Matte: The Foreground’s Luma MATTE (Black = Transparent, White = Solid, Gray = translucent) PFG: Processed Foreground, i.e. the background color of the foreground image will be gray or color reproduced.
  • Page 20 At this time, you can remove the input source of the frozen screen without affecting the display of the output screen. Note: If the DVK-400 is turned off, the frozen screen will be removed, this function can not save the frozen screen in the device.

  • Page 21: Chromakey

    4.3 Chromakey In this section, we will show you how you can adjust the chromakey settings which involve the following:  Matte Generation  Dark Enhancement...
  • Page 22  Bright Enhancement  Shadow Enhancement  Spill Suppression  Edge Fix (HD only)

  • Page 23: Matte Generation

    Once you’ve selected the desired screen color, you can either click “Auto” or “OK” on the “Pick Back Color” window to confirm the selected color and allow the DVK-400 to adjust the chromakey parameters accordingly then apply the key to the foreground image.
  • Page 24 Open Angle The “Open Angle” allows you to set the chromakey color range. In most cases, ±77 will be appropriate. For example, when yellow/green objects become translucent, decrease the chromakey color range until they become opaque. You can use the slider or left and right arrow keys to adjust the “Open Angle”.

  • Page 25: Dark Enhancement

    Dark Enhancement Turning ON this option enables Dark Enhancement. Dark Level The Dark level is 200 by default. If it is increased, the black object or hair will become more apparent. You can use the slider or left and right arrow keys to adjust the “Dark Level”. Click “Reset”...
  • Page 26 Default Depending on the amount of the spill, click Spill Low, Spill Mid or Spill High to select one spill suppression mode, thereby allowing the DVK-400 to automatically remove the spill. Spill Suppression Spill suppression removes the green or blue color reflected onto the foreground subject from the screen.

  • Page 27: Edge Fix (Hd)

    Edge Fix (HD) The Edge Fix (HD) function allows you to adjust the left and right edges for the foreground object which is Chromakeyed by using the “Shrink Left” and “Shrink Right” functions. Moreover, it also provides the “Soft Edge” function for you to apply the soft edge effect on the foreground object which is Chromakeyed.

  • Page 28: Post Processor

    4.4 Post Processor FG PostAmp Enable FG PostAmp to adjust Hue, Saturation, Contrast and Brightness for the foreground subject. Use the slider or left and right arrow keys to change the respective values. To reset, simply click the Reset button. FG Corrector Enable FG Corrector to perform RGB color calibration for the foreground subject.

  • Page 29: Blur

    BG Blur Enable BG Blur to create a fuzzy background for BG and PFG video sources. Use the slider or left and right arrow keys to adjust the blur level. 0 means no blur and 100 is maximum blur. Blur time sets the fuzzification time, ranging from 0 to 20. For example, if the blur time is set to 20, multiply this number by 0.1 to derive the fuzzification time of 2 seconds.
  • Page 30 “Border” allows you to “soften” the mask edges. Increasing the border value creates round soft gradient edges as shown below. The Border value ranges from 0 to 100. Use the slider or left and right arrow keys to change the value. Invert, when turned ON, reverses the default garbage mask (swapping its opaque and transparent areas).

  • Page 31: Holdout Mask

    4.6 Holdout Mask The holdout mask allows you to define the area of the image that would remain unkeyed, for example a green area on the TV screen. First enable the Holdout Mask (OFF by default), then set the area where it is blocked from chromakey by adjusting its left, right, top and bottom edges using the respective sliders or the left and right arrow keys.

  • Page 32: Aux Lumakey

    4.7 AUX Lumakey The “AUX Lumakey” performs lumakey on the input source from the AUX interface. Various parameters of the AUX lumakey will be described in this section. First enable the AUX Lumakey then adjust the following parameters. To reset the parameters, simply click the Reset button.

  • Page 33: Setup

    This switch allows you to switch the output resolution automatically according to the Foreground resolution. The default value of this option is “OFF”. If this option is set to “ON”, the DVK-400 will switch the output resolution automatically according to the Foreground resolution.
  • Page 34 HDMI Output Format Select the HDMI output format from this drop-down menu. The available options are RGB444, YUV444 and YUV442. FW Version Firmware version is shown in this field. FPGA Version FPGA Version is shown in this field. Bootloader Version Bootloader version is shown in this field.

  • Page 35: Reset To Factory Defaults

    Reset to Factory Defaults Follow the steps below to reset the DVK-400 to Factory Default Settings. 1. Click the “Factory Default” button. 2. Click the “Reset” button to reset the DVK-400 to Factory Default Settings.

  • Page 36: Chapter 5 Advanced Applications

    AUX lumakey. 5.1 Video Chromakeying First set up your device according to hardware setup instructions described in Chapter 3. Then follow the steps outlined below to perform video chromakeying. 1. Open DVK-400 User Interface. 2. Open the “Chromakey” page.
  • Page 37 3. Connect your foreground camera to DVK-400. 4. In “Backing Color” on Chromakey page of the UI, you either click “Auto” to generate the key automatically or the dropper icon to manually select the key color. See Section 4.3 Chromakey for more information about key generation.
  • Page 38 7. Open the Setup window by clicking the gear icon at the top right corner of the UI then set the output resolution to the resolution of the foreground camera. Click the Save button after that. 8. Run the background video.

  • Page 39: Crop Using Garbage Mask

    9. Set one of your outputs to “COMP” to show a combined view of the chromakeyed foreground and the background video as shown in the diagram below. 5.2 Crop using Garbage Mask After you apply a key, you may need to crop unwanted background elements that cannot be keyed, such as (1) the screen edge, (2) lighting stands that appear in the background and (3) uneven distribution of light.
  • Page 40 and adjust the mask until the unwanted elements are completely removed. The yellow rectangle specifies the mask edges and is drawn for illustration purpose. In the red rectangle at the bottom left corner of the diagram below, because of uneven distribution of light, the mask edge is vaguely seen.

  • Page 41: Restore Foreground With A Holdout Mask

    5.3 Restore Foreground with a Holdout Mask The holdout mask allows you to define the area of the image that would remain unkeyed, for example a green area on the TV screen. In this section, we will show you how you can cover the green area of the image that should be kept.
  • Page 42 Now, follow the steps outlined below to restore the foreground with a holdout mask. 1. The diagram below is a foreground camera view consisting of a teacher presenting the slides using a TV. 2. As shown in the diagram below, the green components in the pictures and the title of the slide shown against a green rectangle at the bottom left corner of the TV are incorrectly removed after chromakey is applied.
  • Page 43 4. In the following image, green components of the TV are kept after chromakey is applied.

  • Page 44: More Applications Of Garbage And Holdout Masks

    5.4 More Applications of Garbage and Holdout Masks In this section, we will show you more examples of using garbage and holdout masks in a chromakey. Example 1 Please note that in this example, the Invert option should be turned OFF for both Garbage and Holdout masks.
  • Page 45 After you’ve defined the garbage and holdout masks, you will see the chromakeyed foreground overlapped on the background with the desired effects shown in the diagram below.

  • Page 46: Example 2

    Example 2 There are times when we want to remove the area inside the garbage mask and keep the area outside the holdout mask from being keyed. In these cases, the Invert option must be enabled to reverse the order for both masks. In the foreground shown below, the ceiling lamp (1) can be removed by a reversed garbage mask and the green screen (2) can be chromakeyed with a reversed holdout mask.
  • Page 47 The background image is shown below. Apply the chromakey to the foreground image then set the output source to COMP on one of the output monitors, you should see a combined view of the chromakeyed foreground and the background image as shown below.

  • Page 48: Animate Your Program

    5.5 Animate your Program The DVK-400 has a layer swap function that can be found on the AUX Lumakey page of the UI. This function swaps the Chromakey and AUX Lumakey Layers with a fade transition. Please note that the fade transition time can be predetermined by setting the Swap Time.
  • Page 49 After the teacher moves the hand away from the simulated 3D Earth, turn ON the Layer Swap to move the Chromakey layer on top of the AUX Lumakey. When the teacher walks to the Earth, it would look as if the teacher walks to the front of the Earth.

  • Page 50: Example 2

    Example 2 The diagram below illustrates a second teaching scene. The lectern is the AUX Lumakey layer and the teacher is the chromakeyed foreground. With the Layer Swap enabled, the Chromakey layer is above the AUX Lumakey layer, therefore it looks as if the teacher is moving in front of the lectern. Turn OFF the Layer Swap as soon as the teacher moves to either sides of the lectern.
  • Page 51 Now, when the teacher walks to the lectern, it would then seem as if she walks to the back of the lectern as shown in the diagram below.

  • Page 52: Chapter 6 Appendices

    3. Connect an SDI or HDMI monitor to the DVK-400 for viewing the upgrade progress. 4. Insert the thumb drive with the latest firmware files to the USB FW Upgrade port located at the rear of the device then turn ON the power of the DVK-400 to start the firmware upgrade automatically.

  • Page 53: Appendix 2 Frequently-Asked Questions

    Appendix 2 Frequently-Asked Questions This section describes problems that you may encounter while using the DVK-400. If you have any questions, please refer to related sections and follow the suggested solutions. If the problem still exists, please contact your distributor or the service center.
  • Page 54 2. On the “Advanced display settings” window, select “Display 2: DVK-400” and you should see that the active signal resolution being 3840 x 2160 with a refresh rate of 29 Hz. To modify the resolution, click “Display adapter properties for Display 2”.
  • Page 55 6. Click “Keep Changes” to save the change. 7. You should now see the “Active signal resolution” and the “Refresh rate (Hz)” changed to 1920 x 1080 and 59 Hz respectively and DVK-400's BG Input Status showing the expected “1080p59”.
  • Page 56 In the diagram below, white smokes in the chromakeyed foreground show black edges on the rims. Background brightness set to 99% of the maximum brightness. Foreground brightness set to 70-83% of the maximum brightness, thus looking greyish to human eyes. To solve this issue, set the background brightness to a value lower than than the foreground brightness, yielding a more natural look of the smoke as shown below.

  • Page 57: Appendix 3 Dimensions

    Appendix 3 Dimensions Unit: mm...
  • Page 58 Appendix 4 Specifications Model DVK-400 Product Name 4K Chromakey Video Standard 4K/3G/HD Video Process 4:4:4 10 bit Video Format 3840 x 2160p 60/59.94/50/30/29.97/25 1080p 60/59.94/50/30/29.97/25 1080i 60/59.94/50 Foreground Inputs 1 x 12G/6G/3G-SDI 1 x HDMI 2.0 Background Inputs 1 x HDMI 2.0...
  • Page 59 Note...

  • Page 60: Service And Support

    Apr. 26 2021 Version E9 Datavideo Technologies Co., Ltd. All rights reserved 2020...

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