Hi all,
Since nobody presented a working solution to above problem, I would like to show how I resolved it. All I did is I selected Full Project radio button, unchecked Parallel processing and the blank black frames disappeared from rendered output file.
Kdenlive Version 20.04.0
An open source video editor.
Using:
MLT version 6.21.0
FFmpeg libraries

Regards,
Saleh.

None of the previously mentioned suggestions worked for me.


In my particular scenario, when rendering videos with Kdenlive, the black would not appear. It would only occur when using the script option or calling melt from the command line that I would have this problem.

I found that the newer versions of Kdenlive is creating a "black track". This is being done in the kdenlive and script files.

What I ended up having to do is to remove the "black_track" property and track from the kdenlive or script (mlt) file. Then when you do the rendering via script, the file would not contain the black at the end.

I created a video about the issue and what I did to fix that black from showing up at the end going forward.

https://youtu.be/C0oeZAUjlbw

Thanks for investigating this. Has anyone reported it? I could not find it when searching https://bugs.kde.org/buglist.cgi?quicksearch=black%20track.