I'm new in Kdenlive (my first work with this software) and it seems to render bad and very slowly.
My first project on this software is a short movie. I used the big file I recorded and then made 150 virtual clips, and added some more small mpeg files and wav sounds. I use a P-IV, 2.8Ghz, double core, 2Gb RAM. running Ubuntu 9.04.
I've been working with a low-res 150 Mb. (320x200) file made from the big 3,5 Gb. (720x576) because it takes about 15 minutes to open the project and see the clips. The conversion was made using ffmpeg.
Well, if I render the project from the low resolution file it produces a correct output in reasonable time (5 minutes). After renaming files to produce a high-res output it takes more than 15 hours to render (sometimes it hangs) and most of the images in the first third are black. I've tried different codec outputs with the same result and, also, reviewed the big the big file using Avidemux to see if there were any problem on it.
Does anyone have an idea of what may be happenning?