Mageia forum

I am trying to use Kdenlive (official release) for Mageia 4. On attempting to render a small AVCHD clip the following message appreared:
Cannot find the melt program required for rendering (part of Mlt)
A similar issue to this was raised in
Kdenlive, Openshot and xvid support
Postby papa33 » Sep 4th, '11, 09:54
I was unable to find a bug resolution in Bugzilla, so I am raising the issue again.
Here are the diagnostics requested then as they relate to my situation:

Code: Select all

[root@localhost vlad]# rpm -qa | grep ffmpeg
ffmpeg-2.0.2-2.mga4
gstreamer0.10-ffmpeg-0.10.13-14.mga4
ffmpegthumbs-4.11.4-1.mga4
[root@localhost vlad]# rpm -qa | grep avformat
libavformat55-2.0.2-2.mga4
[root@localhost vlad]# rpm -qa | grep mlt
mlt-kdenlive-0.9.0-2.mga4
mlt-0.9.0-2.mga4
libmlt6-0.9.0-2.mga4
libmlt++3-0.9.0-2.mga4
[root@localhost vlad]# rpm -qa | grep xvid
x11-driver-video-vboxvideo-4.3.6-1.mga4
gstreamer0.10-xvid-0.10.23-14.mga4.tainted
libxvidcore4-1.3.2-5.mga4.tainted
libxvidcore-devel-1.3.2-5.mga4.tainted
xvidcap-1.1.7-6.mga4

I have minimal experience in package management but I can raise this as a Bugzilla report if none already exists. To deal with my immediate problem, I could try rebuilding ffmpeg and mlt as described in the referenced post, but I currently do not know where or how to get the source packages for these modules to do the amended ./configure etc steps. I would greatly appreciate any help. Thank you.

Hmmm, seems weird, as you have mlt and kdenlive installed ...
Only bug for kdenlive that seems loosely related is https://bugs.mageia.org/show_bug.cgi?id=8594 but that's about a crash when rendering.

Can you run kdenlive in a terminal and post the output here please?
Also please provide some steps so that I can try to reproduce this.

Thank you for focussing my thinking. In short, I found that all the fields in
Kdenlive > settings > configure_kdenlive > environment
were blank. I don't understand why this happened, but adding the path to melt was sufficient to fix the problem. I then uninstalled Kdenlive with its directories and reinstalled the application. After stepping through the first-run wizard, the environment fields were correctly populated and rendering worked. I can only put this down to something strange on my specific machine, perhaps during upgrade. In any event, the issue is not reproducible and I appreciate your help in solving the matter.