[Kdenlive-devel] custom ffmpeg parameters question

[Harry van der Wolf]

Hi,

I can't say anything about the quality, but I can give a little hint on 
size.
Avidemux defaults for DVD with mpeg mp2 audio output with 192 KBps bitrate.
Kdenlive, using ffmpeg, and ffmpeg itself (using -target pal-dvd or 
-target dvd) use AC3 448 KBps output rate. This will give a substantial 
difference in file size especially in smaller mpg's.
If you open the files in avidemux, take a look in the audio/video file 
information and see what is said about the audio codec and bitrate.

Kind regards,
Harry

Jan Uhlir wrote:
> Just a notice:
> Source video has around 7MB
> Output video from Kdenlive has around 10 MB 
> so there is like 30% increase in size. Isn't the bitrate quality in DVD export profile set too high?
> Output video from Kdenlive reencoded again using ffmpeg -target dvd has around 10 MB too.
>
> Avidemux uses ffmpeg or mencoder in background? Hmm, there could be some catch too.
>
> I'm still not giving up. I try some experiments again. I try to compile Kdenlive & comp. from svn/cvs. I can try to put target=dvd directly to Kdenlive libavformat parameters in export profile. I will keep you informed.
>   
>