I'm not sure where to post this question, so I'm putting it in here. It might be more of an FFMpeg question, but I am using Kdenlive for as many things as I can, and it also uses FFMpeg as a back end for many things.
My system is:
Hardware: Dell Inspiron laptop 1420 N series;
OS: Ubuntu Linux 10.04 LTS
Kdenlive: Version 0.9.2
Let's assume I have a DVD from which I want to rip about 20 minutes of video and convert it to HD 1080p, 25 fps format before editing it further in a Kdenlive project with those settings. I can do it all in FFMpeg, but what is the most efficient way of doing it in Kdenlive? Right now I am stuck in a scaling + padding run with FFMpeg which is going at 2 frames per second (that's right, 2 frames per second!)
First of all, I extracted the desired material from the DVD (which is in NTSC format, aspect ratio is 4:3) and converted it to 25 fps, deinterlaced and resized to 768x576 with a pixel aspect of 1:1 with codec libx264 and "-sameq" quality flag. That took a reasonable amount of time at approx. 10 fps.
Next, I have that input video (called "Ballet.mp4") and this command line in ffmpeg:
ffmpeg -i Ballet.mp4 -s 1440x1080 -vf pad=1920:1080:240:0 -vcodec libx264 -sameq -y Ballet_1080p.mp4
It is working correctly, but it is so SLOW! Can I do this faster in Kdenlive??