Hello, recently i found this amassing program, but i have a problem rendering .flv files. They are just too big.
I create a screen record whit integrated gtk-record-mydesktop,
-region is 1024x768
-15FPS
-full shots
-audio
I create a project whit this parameters:
Size: 1024/768
Frame rate: 15/1
Pixel aspect ratio: 4/3
Display pixel ratio: 1/1

On render i use Flash->4000K, force progressive and export audio.

Video is 30 seconds, and render file is 10.1 MB. This is too big.
Before i use Windows tools, and whit this resolution, same FPS and audi i have about 1MB per minute.
Can you explain me where i do wrong, and how i can fix this.
20MB per minute is a really big file, especially for streaming video from my video blog.
I use Kubuntu 9.04 whit kdenlive 0.7.3
Thank you for tha answer, and for this amassing tool.

Under windows, your movie is also flash encoded? The encoding can have a big impact on the movie size (as well as the quality, normally -> more quality = bigger file)

Yes, under windows (whit camtasia) i do a flash encoding, and file is 1MB/minute. Quality is good. In kdenlive is 20MB/minute same quality. If i use flash->200K file is about 4MB/minute, but quality is very bad. Of course, it is normal to be bad whit this low bitrate, but again, is very big.
If i use mencoder or ffmpeg whit some very long list of options, that i don't realy understand, taken from internet i have about 1.5MB/minute. I try to add this ffmpeg parameters to kdenlive, but it seems that they don't affect the rendering process.
So i think, that i just miss something small that make all the difference.