Controlling 4KScope

4k 1004KScope supports both command line parameters and keyboard control.  This command line parameters can be used to allow 4KScope to open automatically on startup in the mode and size required. The keyboard commands can be used to capture compressed and uncompressed frames directly from the incoming signal.


Command Line Parameters


4kScope -f -m -s D H P R W V

-f Open in full screen mode

-m Open in maximized mode

-s Open in standard mode

D Show Data view on open

H Show Histogram view on open

P Show Picture view on open

R Show Waveform RGB on open

W Show Waveform on open

V Show Vectorscope on open

Keyboard Commands

<SPACE> Freeze/Thaw data view

<ALT>-A - Display mode alpha only

<CTRL>-A - Set to audio vector

<ALT>-B - Display mode blue only

<ALT>-C - Display mode clipping

D - Show the frozen frame

<CTRL><SHIFT>-D - set the interface dimming for HDR display screens

<ALT>-D - Display Mode flip flop

<CTRL>-D - Show data view

<ALT>-E - Display mode edges

<CTRL>-E - Show scope view

F - Toggle full screen

<ALT>-F - Display mode focus assist

<CTRL>-F - Freeze and thaw

<ALT>-G - Display mode green only

<CTRL>-G - Set to chromaticity

<ALT>-H - Display mode HDR false color

<ALT>-I - Display mode calibrate

<CTRL>-I - Set to audio histogram

<ALT>-J - Display mode luma key

<ALT>-K - Display mode chroma key

<ALT>-L - Display mode luma only

M - Show mix of live and frozen signal

<ALT>-M - Display mode false color

<ALT>-N - Display mode none

<ALT>-O - Display mode opacity

<ALT>-P - Display mode chroma key despill

<CTRL>-P - Set to picture

<CTRL>-Q - Set to audio phase

<ALT>-R - Display mode red only

<CTRL>-R - Set to waveform RGB

S - Show the live signal

<ALT>-S - Display mode green screen

<CTRL>-S - Set to status

<CTRL>-T - Set to timing

<ALT>-V - Display mode buffer weighted

<CTRL>-V - Set to vectorscope

<ALT>-W - Display mode weighted RGB

<CTRL>-W - Set to waveform

<ALT>-X - Display mode expt

<CTRL>-X - Set to audio wave

<ALT>-Y - Display mode zebra chroma

<ALT>-Z - Display mode zebra luma

1 - set first scope for flags and type

<ALT>-1 - set to single scope

2 - set second scope for flags and type

<ALT>-2 - set to two scopes

3 - set third scope for flags and type

4 - set forth scope for flags and type

<ALT>-4 - set to four scopes

5 - set fifth scope for flags and type

6 - set sixth scope for flags and type

<ALT>-6 - set to six scopes

<ESC> Leave full screen mode

<CTRL>-0 Capture uncompressed frame as YUV (8 bit), v210 (10 bit), RGB10 (10 bit)

These are headerless frames, with only the raw data in them.  They can be viewed or read in Drastic software like videoQC, DTMediaRead, MediaNXS, etc.  Please contact Drastic for the bit format of these files.

<CTRL>-1 Capture a full size JPG image (in 8 YCbCr bit only)

<CTRL>-2 Capture a 50% size JPG image (in 8 YCbCr bit only)

<CTRL>-3 Capture a 25% size JPG image (in 8 YCbCr bit only)

<CTRL>-4 Capture a 10% size JPG image (in 8 YCbCr bit only)

<CTRL>-9 Capture a 1% size JPG image (in 8 YCbCr bit only)

Mouse Control

4kScope also features extended mouse controls.  These include:

  • <MouseWheel> - zoom in and out symmetrical
  • <MouseWheel><Alt> - zoom X axis
  • <MouseWheel><Ctrl> - zoom Y axis
  • <RightClick> - reset zoom to view all
  • <LeftClick>Drag - pan and scan the video image in the app
  • <MiddleClick> - zoom 1:1
  • <DoubleLeftClick> - enter and exit full screen mode
  • <T> - enable or disable time code display in full screen


Making Marks/Guides (cross, line and box)

  • <SHIFT><LeftClick> - Make a point/cross
  • <SHIFT><ALT><LeftClick> - Undo last
  • <SHIFT><CTRL><LeftClick> - Drag to make a line
  • <SHIFT><CTRL><ALT><LeftClick> - Drag to make a box
  • <CTRL><ALT><LeftClick> - Drag to make a circle
  • <SHIFT><RightClick> - Clear all markers/guides

Configuring Graticules

The Action Safe, Title Safe and Graphic Safe graticules can be configured to custom sizes.  All sizes are based on a percentage of the video active picture, and are expressed as a value between 0.0 and 1.0.  They are saved in the registy (Windows), 4kscope.plist (OS-X) and 4kscope.conf (Linux).  For each (SafeAction, SafeGraphic, SafeTitle), there is a group of setting: left, right, top, bottom.  If the settings and group are deleted, the setting will recreated with the default/SMPTE/EBU values.  To move the graticule in 10% on all side, you would set top/bottom/right/left to 0.1.

Configuring Logging Limits

When using the 4kScope/HDRScope logging feature, there are some default limits used to trigger events in the log.  If you wish to change them, they are available in the main config.xml file, which can be edited with the included (Windows/Linux) DDRConfig tool:



Both 4kScope and the Network Video Analyzer include an HTML/REST API and HTLM UI pages.

WebSix PicVectorChromaticityWaveLumaWaveRGB 1080

The documentation for the REST API is available here:


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