znalazlem na zachodnim forum fajny sposób:
program to darmowy "MediaCoder"
opis jak najfajnie przekonwertować:
Go to Audio tab
Select LAME MP3, Original Hz (Resample), Stereo
On the right side select Average Bitrate (ABR) with 128 Kbps
Go to Video tab
Select Two-Pass with 300 Kbps in XviD, AVI (ja widze róznice i daje u siebie 900 zamiast 300)
Goto Picture tab
Set resolution to 400x240.
Crop
Now it becomes a bit tricky...
My video in this example is 640*336. But it has to become 400*240.
We have to get the same ratio! Not resolution!!
400 / 240 = Original width / 336
New width = (400/240) * 336 = 560
That means that we must cut off 640-560=80 px, following 40px on each side.
=> 40:0:560:336 (first x:first y:width:height)
czyli zakładając ze konwertujemy z HD:
1280x720
1,67*(wysokosc)=x
400/240*720=X
x=1200
1280-1200=80
czyli w pole wpisujemy:
40:0:1200:720