Technical

Tips, Tricks and Technical Information

Controlling DrasticPreview

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DrasticPreview and DrasticPreview Pro can be called by external applications with command line parameters.  If there is already an instance of the application running, the parameters will be transferred to the running instance, and the called one will exit.  This is especially useful where the workflow requires the system to display particular aspects of a clip in an automated fashion.

 

Command Line Parameters

 

DrasticPreview[Pro].exe -t <timecode> -c <framestart> -f -o [-h]

 

-t 01:00:00:00 - Seek point in time code, based on the time code track in the file

-c 1800 - Seek point in frames, based on the absolute position in the file

-f - Start in full screen mode

-o - Disable time code overlay in full screen mode

-h - Disable hardware (AJA/BlueFish444/Blackmagic) output.  DrasticPreview Pro only.

 

For selected time code source, display page (metadata, time code, etc), audio meter type and other settings, they will be remembered between runs from the last selection.  To modify these setting programmatically, the registry (Windows) or prefs (macOS) must be changed.  The basic settings are:

 

Windows (registry)

DrasticPreviewPro:  HKEY_CURRENT_USER\Software\Drastic\DrasticPreviewPro

DrasticPreview:  HKEY_CURRENT_USER\Software\Drastic\ClarionDT

 

macOS (~\Library\Preferences\)

DrasticPreviewPro:  com.drastic.DrasticPreviewPro.plist

DrasticPreview:  com.drastic.ClarionDT.plist

 

Linux (~\.config\)

DrasticPreview Pro:  DrasticPreviewPro.xml

DrasticPreview:  ClarionDT.xml

 

Settings:

actionsafe - what overlays, if any, are shown on the video

filter - the default file filter

filtercc - the default closed caption file filter

fullscreen - set for full screen mode

loadpath - last path a file was loaded from

loadpathcc - last path a closed caption file was loaded from

metertype - which audio meter type is displayed

scopemode - what video scope is displayed, if any

sdoutersafe - show the sd action safe

sdsafe - show the sd title safe

show_mini - show the mini transport controls, instead of the full set

show_tips - enable tip display while idle

titlesafe - show hd title safe

viewmode - information panel to display

 

Keyboard/Clipboard Commands

DrasticPreview and DrasticPreview Pro have a full set of keyboard commands available.  Key press events can be sent to control playback like:

c = play
v = pause
b = reverse play
z = fast reverse
x = fast forward

 

A full set of keyboard commands is available here:

 

http://www.drastic.tv/images/software/drastickeyboard.pdf

 

DrasticPreview also supports using the system clipboard.  A cut/copy on the application (via keyboard or programmatically) will pull the current time code in a ##:##:##:## format.  Pasting a time code into the application will cause it to seek to that absolute (0 based) point in the file.  If the pasted buffer contains a file URL, then that file will be loaded into that application.

 

Mouse Control

DrasticPreview Pro also includes extended mouse controls.  These include:

  • <MouseWheel> - zoom in and out
  • <CTRL><MouseWheel> - volume up and down (0..200%)
  • <CTRL><LeftClick> - volume to 100% (unity)
  • <CTRL><SHIFT><MouseWheel> - change background luminance
  • <LeftClick>Drag - pan and scan the video image in the app
  • <ALT><LeftClick> - view magnifying window
    • <LeftClick> - bring up colour selector with colour under cursor
    • <RightClick> - exit magnify mode
  • <DoubleLeftClick> - enter and exit full screen mode
  • <T> - enable or disable time code display in full screen

Trademarks, Registered Trademarks, and Copyrights
AJA Video Systems, Inc. - AJA® is a registered trademark of AJA Video Systems, Inc. AJA™ is a trademark of AJA Video Systems, Inc. Corvid Ultra®, KONA®, IO®, KUMO®, U-Tap®, and T-Tap® are registered trademarks of AJA Video Systems, Inc.
Apple Inc. - Apple, the Apple logo, Final Cut, Final Cut Pro, Apple TV, iOS, iPad, iPhone, iPod touch, iTunes, Mac, Mac OS X, macOS, Shake, Final Cut Pro, ProRes, High Sierra, Mojave, M1, M2, and QuickTime are trademarks of Apple Inc., registered in the U.S. and other countries.
Blackmagic Design Pty. Ltd. - DaVinci Resolve, DaVinci Fusion, UltraStudio, DeckLink, Intensity Pro 4K, UltraScope, and RED are either trademarks or registered trademarks of Blackmagic Design Pty. Ltd. or its subsidiaries in the United States and/or other countries.
Bluefish Technologies - Bluefish444, IngeSTore, Symmetry, Kronos, Epoch, Epoch:Neutron, Fury, Lust, Vengeance HD, Deepblue, Envy SD, and Epoch:SuperNova are trademarks of Bluefish Technologies
Drastic Technologies, Ltd. – Drastic Technologies, Drastic, Drastic.tv, videoQC View, videoQC Pro, videoQC Inspect, videoQC Workstation, FlowCaster, Network Video Analyzer, 2110Scope, HDRScope, 4KScope, sdiScope, Net-X-Code Server, Net-X-Code Channel, Media File Scanner, MediaReactor, MediaReactor Workstation, MR Lite, ccConvert, Net-X-Proxy, Net-X-Convert, MediaNXS, ndiScope, DrasticPreview, QuickClip, DDRConfig, and SyncControl are registered trademarks of Drastic Technologies, Ltd.
Linus Torvalds - Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
Microsoft Corporation – Microsoft: Windows®, Video For Windows (VFW), DirectShow, Microsoft, Skype, Microsoft Azure, Microsoft Teams, Wave Mapper, Microsoft, Windows NT|2000|XP|XP Professional|Server 2003|Server 2008 |Server 2012, Windows 7, Windows 8, Media Player, Media Encoder, .Net, Internet Explorer, SQL Server 2005|2008|2012|2014, Windows Media Technologies and Internet Explorer are trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.

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For more than two decades, Drastic™ has been developing cutting edge solutions for television, post production and sports broadcasting, from real time web delivery to 8K broadcast.

We offer standalone software for the end user or enterprise, integrated solutions for automated workflows, and OEM tools for custom applications or branded devices.

Contact Us

Address:
523 The Queensway, Suite 201
Toronto, ON
M8Y 1J7, Canada

Phone: +1 (416) 255 5636

Email: info@drastictech.com

Fax: + 1 (416) 255 8780