If anyone is interested i have finally managed to encode videos for the X20 to .avi with VirtualDub.
All you need is VirtualDub, Xvid 1.1.2 and Lame-ACM 3.97. You can get them from
www.free-codecs.com.
The settings that I've used and seem to work for most videos are:
- for video: profile@level = advanced simple @ L3, but i've changed it by deactivating B-VOPs; a bitrate of 480;
- for audio: Lame MP3 @ 44.1Khz, 128kbps CBR, Stereo
+ and the resize filter to change the video size to 320xZZZ
It is much faster than transcoding with iriver 3.