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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

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- Install a VPN network with OpenVPN
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Email management

- Receiving mail and making it available (POP, IMAP and webmail)
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LAMP

- Use a DBMS with MariaDB
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- Analyse logs Apache

Securing

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

Troubleshooting performance issues with kdenlive

Troubleshooting Performance Issues with Kdenlive

Last modified August 4, 2024

his 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:

Presentation

If you are experiencing performance issues with stuttering video and laborious editing with monstrous waiting times during which everything freezes, you have three ways to improve this. The first is proxy clips, the second is to use certain timeline tools , and the third is to enable the GPU option in the preferences mentioned above . We will first try the GPU option which gives excellent results, however if it brings instability, we will favor the second method which is simpler to use and takes less time than the first method of proxy clips.
We enable the proxy Clips function by going to Project->Project Configuration and checking the proxy Clips box.



In the encoding profile we can choose to use the processor of the GPU graphics card, in this case it is using an NVIDIA with an H265 (HEVC) video codec.


We go back to the Project Sources level and select the problematic video clips and from the context menu we check the proxy clips box



It is not immediate, it will launch a calculation (task) with a progress bar at the clip level, for large HD files, it is also costly in time and resources. Then the processed clips will have a black P in a yellow square clearly visible as below. If nothing happens, you will probably have to reload the clip Clip->Reload clip. You can see that you can also apply this treatment to clips that have been previously stabilized. If you view them in the clip monitor, it is normally much smoother but with a degraded image quality but which will be sufficient to edit comfortably, do not worry about the rendering of the final video, by default kdenlive returns to the original resolution.


Enable proxy clips by default

For all new projects, proxy clips can be enabled by default by specifying this in the kdenlive configuration tool by checking the Enable proxy clips box.

Timeline tools

You can downgrade the viewing resolution in the clip monitor from the menu shown in the image below, by default it is on 1:1 so for HD in 1080p for example at the clip monitor level you can lower the resolution drastically to make it smoother by switching to 360p or even 270p. This will only downgrade the viewing but absolutely not the final video.


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