I have been using Kdenlive for over a year now on PC running Solus OS and have been loving it. I recently ran updates and now my render speeds are horrible. It's taking over 3 hours to render a video under 20 minutes long on the default settings (1080p .mp4). I have estimates of over 5 hours for a 30 minute video. Changing the render speed or quality does nothing at all. The time is the same no matter what the settings. I have searched online for answers and search through all the settings and can't figure out how to speed it up. Is this a bug and is there any way to fix Kdenlive to render like it use to?

Hello,

This is a problem we are discussing from quite a long time, but when I ran tried to run tests to determine when the change happened I couldn't find a faster setup, so I believed it might have come from progressively using heavier clips.

So if your project profile and source clips have remained the same, can you tell me from which version to which version of kdenlive+mlt+ffmpeg you have changed ?

And maybe have a version of the project before and after the change, to see if it comes from the programs or from our internal settings?

Thanks, I hope we can rapidly find an improvement, that would make many many people happier

Vincent

All I know is that I'm currently running 19.04.1 Using: MLT version 6.14.0, FFmpeg libraries?

It took 4 hours 41 minutes to render a 30 minute 1080p 59.94fps video last night. That seems excessive, doesn't it? When I change the quality settings or the threads or encoder speed it seems to have no effect on the render time. I'm not sure if those settings are actually doing anything.

All my video clips are shot in .mp4 format and are rendered to .mp4 under the same settings. I use very few filters or transitions. Mostly a couple uses of volume or fade. Any ideas are appreciated.