When I was on Kubuntu, I had more luck not using the backports, sticking with kdenlive 0.9.10 and then compiling mlt-0.9.6 from the wily source package.

Couldn't give you the step-by-step though as I've recently moved to suse.

Hi, I have experienced a similar issue with kdenlive 18.12.3 on Debian 10.3 when rendering a 1080p project on a slow computer.

In my case the rendering is working perfectly, it's just the 'Waiting...' message appears in the render window while the computer calculates the estimated rendering time. If the CPU is already maxxed out by the rendering process, it can take a minute or two for the estimated rendering time to appear in that window.

I would suggest checking your render output directory to see if the output file has been created. If the output file exists and is growing in size every minute, and your CPU usage is close to 100%, that's just kdenlive doing its job correctly

It might be more obvious what is going on if the 'Waiting...' string was changed to something like 'Calculating render duration...' if that is indeed the case.

Thanks for this awesome video editor!

No output file, nothing at all but "Waiting". And it already worked on this machine one or two years earlier - I don't use kdenlive too much -, I only upgraded my Ubuntu sometimes.

So, five years later there the same problem still exists. Cringy. Also, the suggestion to change the distro. Every other program works on it, and I have a lot installed.

Non snap version works, although it looks very different. Themes under snap... Giving all permission did not help.

Having this same problem on Kdelive 20.04.0 with Kubuntu 18.04 Intel i7 9700 Nvidia 1660 Ti

On all my projects if I try to render it just stays on waiting....... forever. No file is generated. I've let it sit there for hours and nothing happens.

I'm dead in the water here.

Paul

Having the same issue.

On Ubuntu 18.04 but the stock version in that distro is really old like 17.12, and I needed Auto Mask working - so used snap install to get 20.04

Everything seemed great until I went to render, and now it just says "waiting".

Waiting for what? There is no other job... Not sure what to do next

I had the same issue with Kubuntu 20.04.

I tried capslock solution from 1 to 4 and nothing, so I started to try different versions for this steps and still the same problem.

Since nothing else worked, I did step 5 and changed to openSuse as he recommended and now is working perfectly and so fast that I can't even see the Waiting message anymore.

Thanks a lot capslock, not even now kdenlive is working, but also everything else in my system got a lot faster with openSuse Tumbleweed.

this happens also to me on Windows... after replacing the MLT .. i have displayed "waiting..." but afetr a while the rendering ends.. and it's fine... take a look to your hard drive LED to be sure that there is not an intesive activity of disk.

P.S.

dannotdaniel wrote:Having the same issue.
On Ubuntu 18.04 but the stock version in that distro is really old like 17.12, and I needed Auto Mask working - so used snap install to get 20.04

BTW the new "motion traking" is way better that the old auto-mask (developer of old automask is not responding to messages or mails)

[edit] just made some test and seems that when there is a Kdenlive_render process active (not killed at the end of rendering.. or maybe active after a crash) .. starting a new rendering create another "kdenlive_render" process and the state of rendering become "waiting..." .. i have to close kdnelive.. kill oll Kdenlive_render processes.. and then start again kdenlive. [/edit]