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Miscellaneous

- Presentation of my configuration
- Controlling a garmin GPS watch

Multimedia

- Definitions and other concepts in video
- Basic tools for video
- Video container
- Video players
- Transcoding and DVD ripping
- Audio and karaoke players
- Managing audio metadata and playlists
- Kodi mediacenter

Video editing

- The basics of video editing
- Installation of video editing software
- Editing your video with Kdenlive
- Editing your video with Cinelerra
- Editing your video with OpenShot Video Editor
- Editing your video with Pitivi Video Editor
- Editing your video with Flowblade Video Editor
- Editing your video with Shotcut

Edit your video with kdenlive

- Introduction
- Presentation and configuration
- Project preparation
- Fixing performance issues
- Roughing
- Applying effects
- Adding transitions
- Managing titles and subtitles
- Managing keyframes
- Video grading
- Exporting your video

Network and system

- OpenLDAP
- User authentication system with OpenLDAP
- Install a VPN network with OpenVPN
- System and data backup tools
- Cloud backup with infomaniak kdrive and Google Drive (with encryption)
- Check the integrity of your disks with smartmontools

Email management

- Receiving mail and making it available (POP, IMAP and webmail)
- Fighting spam and viruses
- Managing mail transport with sendmail

LAMP

- Use a DBMS with MariaDB
- Apache PHP MariaDB (with sources)
- Analyse logs Apache

Securing

- A word about cryptographie
- Securing your linux workstation
- Video surveillance system

Video calibration with kdenlive

Video Calibration with Kdenlive

Last modified August 2, 2024

This site has been automatically translated with Google Translate from this original page written in french, there may be some translation errors

Object

This page is part of a tutorial to explain video editing with kdenlive and which includes the following topics:

What is called video calibration is often the last step of editing, the finishing touch so to speak, it allows you to modify the contrast, brightness or colors of your video to give it a particular rendering. kdenlive offers powerful tools and not necessarily very easy to use. By switching the display mode to color, you can see on the left the main analysis tools, from top to bottom as well as the histogram on the right.


  • RGB display: an image is made up of a mixture of the primary colors Red, Green and Blue, this tool allows you to visualize the distribution of its 3 components, we call this chrominance.
  • the waveform : which gives the brightness of the image or luminance
  • the vectorscope: which allows you to display a color wheel to make colorimetric corrections to the image, a saturated (intense) color will be further from the center unlike a dull image which will be closer to the center.
  • the histogram : these curves give the histogram of the luminance of each color component of the video, the luminance evolves from 0 to 255 on the abscissa axis, the ordinate corresponds to the number of pixels with the luminance concerned on the currently selected image. Basically at 0, the image has no luminance, so it is black and at 255, the color is very intense.
Setting all this up is very complex so I can only refer you for now to the kdenlive manual ( Histogram Manual , RGB Spread and Waveform Manual , Vectorscope Manual ).

To make it simple, we can simply apply certain color correction effects such as white balance or apply a LUT (Look Up Table) model which is a set of preconfigured values ​​to modify the rendering of the video. We will use the Apply LUT effect, 4 models are available by default.


By clicking on the button   you can download other models made available to the community or you can find them on the internet, kdenlive supports LUTs created by After Effects ( .3dl ), Iriadas ( .cube ), DaVinci Resolve ( .dat ) and Pandora ( .m3d ) that you can download by choosing Custom... in the drop-down list of models. Sites like this one offer them for download, you will have to register but it is worth it.

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