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Color/Overlay Pane

The Color/Overlay Pane controls how the colors are displayed and whether to display an overlay (basically, a black text box) on the screen.

colorspacepane

Color Space Description

Y/ G
Cr / R
Cb / B
Check displays the Y or G. Uncheck turns this color space off
Check displays the Cr or R. Uncheck turns this color space off
Check displays the Cb or B. Uncheck turns this color space off.
Y’CbCr is in Broadcast space; RGB is in Broadcast RGBA or DVI ARGB space.
Overlay This puts the overlay text over the video sequence. The overlay is a text file which has the same name as the sequence name with a .cvo extension. An overlay file is automatically created with the sequence name inside when you import or record a video sequence. The maximum length of the overlay is 35 characters. You can edit this using any text editor. The .cvo file is in the library where the audio & video reside.
Force 601 Checking this box tells ClearView that the video sequence was encoded using 601 regardless of resolution
Unchecking this box, SD uses 601; HD uses 709.
As Mono Check shows the image in B/W mode. Uncheck: shows all colors.
Gamma / Lookup Table Check lets you define your own Gamma/Look up table which redefines the values for Y’CbCr or RGB. The file where your own definition exists must be in the format as show in the LUT example below.
Filename You can type in the full path and filename or select Browse to find the fileNote: There are many examples under www.videoclarity.com/support/ (Miscellaneous Support Files).

The user can choose to display only the Red (R) in RGB space or the Luminance (Y) in YUV space.

The user can also define a more complex LUT (look-up table). The LUT is a tab delimited file ending in .lut. Several LUT files are provided with the installation. The columns are ordered as R-G-B or Cr-Y-Cb. As an example, a LUT in RGB 8-bit & Y’CbCr 8-bit, which only displays Red would look like the following (Note: that 0x10 is black for Y and 0x80 is black for Cr and Cb):

Example of RGB/Y’CbCr LUT

A 10-bit color space would have 1024 entries and values up to 1024. When using an A-B mode without Addback it is advised to use a LUT that spreads the small pixel values over a larger range.

Preview Update Pane

The Preview Update pane (at the top right corner of the GUI screen) controls the refresh of the preview displayed in the center of the ClearView GUI.

Note 1: This preview display is never updated faster than 30Hz so you should never rely on it as your only output.
Note 2: The preview is also decimated both horizontally and vertically. You cannot trust the image quality in this window.

Preview Update
PreviewPane

Preview Update Descriptions

Live Updates the Preview Window at up to 30fpsNote: all of these modes only affect the Preview Window. They have no affect on the hardware output. The Preview Window is decimated as we are only showing 1 in 4 pixels horizontally and vertically.
1 fps Updates the Preview Window at 1fps
10 fps Updates the Preview Window at 10fps
User Action Updates the Preview Window when the user clicks the mouse hits enter, etc.
Off Does not update the Preview Window

Split Pane

The Split pane controls the way that Viewports A and B are displayed.

Split Pane
SplitPane

Split Pane Descriptions

Horizontal Viewport A is displayed on top, Viewport B on the bottom
Vertical Viewport A is displayed on the left, Viewport B on the right
Split Point This changes the pixel number where Viewport A ends and Viewport B begins.Note: This defaults to the middle when you switch between horizontal and vertical
Swap A/B Show the video sequence assigned to A on Viewport B and visa-versa (for example, show clip A on the right and clip B on the left). The effect in A-B modes is that the math turns into B-A.Note: This gets very confusing. It is better to simply reload the sequences.
Multiple Outputs Checking this sends Viewport A to one SDI output and Viewport B to the other.Note 1: This mode works only with the CV-SDI-IO-DL module or with the ClearView Extreme with 2 Broadcast I/O modules
Note2: This only works if the View mode is A-only or B-only.

Zoom Pane

The Zoom Pane allows integer-based, pixel replication zoom in both X and Y.

Zoom Pane Descriptions

Zoom Zoom is a global parameter and effects both Viewport A and Viewport B. This is an integer-based zoom. No pre-processing is done as ClearView does not affect the video quality.Note: Zooming in/out can also be done with the mouse wheel. Move the mouse to the center-point for the zoom, and roll the mouse roller in/out. Use the left mouse button to pan and the roller to zoom +/-.
Disable Zoom/Split Disable Zoom/Split returns the system to single stream mode.Note 1: This mode is used to run in ultra-high frame rate/resolution mode as it directly connects the file system (or memory) to the input buffer of the output module (DVI or Broadcast I/O).
Note 2: This effectively removes zoom, split, color space, PSNR, (i.e., everything). It should only be used if told to by a Video Clarity Sales/Support Engineer.

Play Mode Pane

The Play Mode pane controls whether the clip is played 1x, forever in a loop, or forward then backward repeatedly. The Alternate A/B plays sequence A, then sequence B repeatedly.

Play Mode

Field/Frame Mode Pane

The Field/Frame Mode pane allows various options for viewing fields and frames. This is mainly used for interlaced material. These options are independent for Viewport A and Viewport B.

Field/Frame Mode
FieldFramePane

Zoom Pane Descriptions

Field Mode A This has 3 radial button choices:

  • F1 only: This plays field 1 when displaying field 1 and field 1 when displaying field 2. In other words, it plays field 1 for both fields.
  • F2 only: This plays field 2 when displaying field 1 and field 2 when displaying field 2. In other words, it plays field 2 for both fields.
  • F1/F2: This plays field 1 when displaying field 1 and field 2 of frame 1. Then plays field 2 when displaying field 1 and field 2 of frame 2.

Note: Blacken Duplicate Pixels turns off the other field so F1 only means field 1 when displaying field 1 and black when displaying field 2. F2 only means black when displaying field 1 and field 2 when displaying field 2.

Field Mode B This has 3 radial button choices:

  • F1 only: This plays field 1 when displaying field 1 and field 1 when displaying field 2. In other words, it plays field 1 for both fields.
  • F2 only: This plays field 2 when displaying field 1 and field 2 when displaying field 2. In other words, it plays field 2 for both fields.
  • F1/F2: This plays field 1 when displaying field 1 and field 2 of frame 1. Then plays field 2 when displaying field 1 and field 2 of frame 2.

Note: Blacken Duplicate Pixels turns off the other field so F1 only means field 1 when displaying field 1 and black when displaying field 2. F2 only means black when displaying field 1 and field 2 when displaying field 2.

Blacken Duplicate Pixels This displays black for the field that is being duplicated above. Please read the note sections above.

HotKeys Pane

The HotKeys pane allows the user to set various parameters and to see some attributes about the system.

HotKeys Controls
HotKeyPane

HotKeys Control Descriptions

Drop This indicates if any frames have been dropped. There are 2 numbers and they relate to where the frame was dropped.
Config This lets you set various general parameters for the ClearView . These settings are saved globally.
Hotkeys This lets you set various keystrokes to do repetitive actions. These settings are saved globally.
fps This is the measured frame rate.
Reset This restores ClearView to the startup state
Exit This exits ClearView (as does the X at the top of the screen and the ESC key)

Configuration Settings
ClearViewConfiguration

Configuration Setting Descriptions

Memory Usage ClearView uses memory for itself to draw the GUI and to display images on the GUI. For the most part it uses about 60% of the available memory. You can change this number to regain some memory for writing video sequences into RAM
Playback These are the default playback parameters for both broadcast and DVI. You may want to change the default broadcast audio playback (turning it on or off if you have audio), broadcast playback/record with VANC (turning it on or off if you want to include the VANC which is a bigger raster than without VANC, default DVI format which is the native format that the DVI monitor accepts so that it can be restored if the EDiD codes are not acknowledged, and Playback using spatial offsets (turning this on automatically shifts the image during playback to show you the offsets as you adjust them or as you allow the automatic algorithm to work).
Note: The others items in this group should be checked only after talking to Video Clarity customer support.
Record You can change the default broadcast audio record setting (turning it on or off during record) and you can place the audio in a different directory than the default library where the audio is placed. You may need to change the default directory if instructed by a video clarity customer support professional.
Import This lets you import audio. It should be on by default.
It changes where we place the video sequence if the raster size is larger than the video sequence.
It changes where we start the video sequences if the raster size is smaller than the video sequences.
Note: The others items in this group should be checked only after talking to Video Clarity customer support.
Objective Metrics
  • Addback Negative Color – When B-A > Threshold in Addback mode, we show the pixel in a color. The default color is Yellow. You can change this.
  • Addback Positive Color – When A-B > Threshold in Addback mode, we show the pixel in a color. The default color is Green. You can change this.
  • JND Field Mode – This should be set to Auto which allows the system to do the right thing. For interlaced video sequences, the field mode should be field. For progressive video sequences, the field mode should be frame. If you override this, then you may want to set the Deinterlace flag below.
  • JND Deinterlace Flag – If you are calculating interlaced data in frame mode, then you need to choose a de-interlace method. In general, you should use JND Field Mode = Auto.
    • Average – averages to the top field and bottom field
    • Duplicate – duplicates the top field when active or the bottom field when active
    • Hybrid Average – Creates a new line that is 1/4 of the summation of the top and bottom fields
    • Median – calculates the median average as opposed to the arithmetic average above
  • JND Color Modeling Flag – This is automatically set based on whether we are in HD or SD. This is an override.
    • SMPTE274M – HD Color Mode (default)
    • SMPTE240M – SD Color Mode
    • EBU-625/50 – European Color Mode
  • JND Viewing Modes in Picture Heights – This is how far the human tester was standing away from the display. JND has two defined distances based on the ANSI specification 2x (Expert) and 5x (Normal). Measure the height of the display and stand either 2x or 5x the height from the display. Video Clarity interpolated the results to achieve 3, 4, and 6x
  • JND Max Display Luminance – This is the luminance of the viewed display.
  • Output JND Maps – This check box enables JND display maps to be written to disk. The maps give an indication of what the algorithm “saw” when calculating the metrics. It is useful for figuring out why the score is the score for video processing vendors.
  • JND Map Location – This is where the map files are stored on the hard disk array. The files are viewed using a command line program called vpseqw32.exe.
  • DMOS Field Mode – This should be set to Auto which allows the system to do the right thing. For interlaced video sequences, the field mode should be field. For progressive video sequences, the field mode should be frame. You can override this.
  • DMOS Max Value – DMOS is a scale from 0 (perfect) to X (very poor). The X is normally 4, but it can be 7 or 10. This sets the value to 4, 7, or 10. The numbers are linearly equivalent as we are using 4 digits of accuracy after the decimal place.
  • PSNR Numerator Limited to Legal Broadcast Values – The PSNR numerator is the maximum legal value. Normally, this is set to 255 for 8-bit and 1023 for 10-bit. ANSI suggests using 235 for 8-bit and 940 for 10-bit, which is the setting used if you select this option.
  • Maximize Align Length – Setting this should be done with caution. After calculating the temporal alignment with this set, the first and last frames will be adjusted to the maximum number of frames in the video sequences. For example if the video sequence in Viewport A has 10 frames and the video sequence in Viewport B has 20 frames. If the Alignment is sequence A’s frame 5 is the same as sequenceB’s frame 10. The ViewportA’s first will be set to 0 and last to 9. ViewportB’s first will be set to 5 and last to 14.
    Note: this might be great unless you record in a loop where this would be very wrong.

HotKeys
HotKeys

To change a Hotkey (aka keyboard shortcut), place the mouse in the space next to the function and type the keyboard sequence. Please remember that the keyboard sequence must begin with Ctrl or Alt. After changing the Hotkey, press OK. It will be saved for future use.

Note: Enable is set off by default so HotKeys are not active. You need to enable them.

FPS is the current frame rate.

Reset restores ClearView to its state when first entered. It removes the video sequences from memory as well.

Exit causes the ClearView application to quit.

 
 
 
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