Hi, This has just started happening, I'm using Windows 10 64 bit edition. The video preview screen will play the video and audio of the first clip on my timeline, but if you then drag the timeline bar to another clip, it will only play the audio and not the video of the other clip, almost like the preview screen has frozen. Thanks.
It started working for a while, but now exactly the same thing has happened. Any ideas?
Please try with the actual Kdenlive version 18.08.2
It seems that this report is related to very old unmaintained version. A lot changed since then, especially the timeline got a complete rewrite and it is likely that this has been fixed. Feel free to reopen this bug or create a new report if this is still happening with the latest version (https://kdenlive.org/en/download/)