Hi!
I'm completely lost with the following situation.
I've a basic kdenlive project which renders without problem in the appimage 19.12.1 (under linux)
As I'm running from a terminal, I can see the message
Started render process: "/tmp/.mount_kdenli1BSILB/usr/bin/melt" "-progress /home/david/Vídeos/kdenlive-renderqueue/cNuevo.mlt"

If I run
> /tmp/.mount_kdenli1BSILB/usr/bin/melt -version the output is
melt 6.19.0
Copyright (C) 2002-2019 Meltytech, LLC
<https://www.mltframework.org/>
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

But trying /tmp/.mount_kdenli1BSILB/usr/bin/melt -progress /home/david/Vídeos/kdenlive-renderqueue/cNuevo.mlt
gave:
Failed to load "/home/david/Vídeos/kdenlive-renderqueue/cNuevo.mlt"
Failed to load "/home/david/Vídeos/kdenlive-renderqueue/cNuevo.mlt"
Usage: melt [options] [producer [name=value]* ]+
.......

I've tested
.- moving cNuevo.mlt to other folder, same result
.- running my local install of melt 6.18, same result

I'm having the same problem with other mlt files which I assummed to be due to a conflict of melt versions, but as I can run the one "packed" with kdenlive, I do not understand which is the problem.
Any help is appreciated.

Regards
David

Hello,
Strange...
Have you checked the mlt file is not empty? Are the file authorizations OK for the user you use in terminal?

Dear vpinon:
thanks for replying. Everything looks correct in the mtl file. In fact, if I run the script from kdenlive, it works.
Regarding permissions, everything is in my home folder, so there should be no problem.

I'll make a fresh install of linux in a virtual machine and test if the same behaviour arise.

All the best

David

Seems to be a problem with melt installation.
I can not play any single file video from the command line.

Sorry for the inconveniences

dp