MENCODER.EXE error is most likely you don't have the proper codec to process the files you want to convert using AVConverter that comes from that player.
There are 2 solution:
1. Downloag CCCP
http://en.wikipedia.org/wiki/Combine...ity_Codec_Pack
Install it, then try the AVConverter again.
or
2. Download Xilisoft Video Converter 3.1
(
http://www.xilisoft.com/) its a trial,
you can purchase or "God knows how" to make it full version.
and Use this settings to convert video:
Profile: XviD Movie (*.avi)
Zoom: Full (Keep aspect ratio)
Video : (Similar to High Compress settings in AVConverter)
Video Codec: Xvid
Video Size: 224x176 (It has to be
224 not 220)
BitRate: 200 (above 500 quality gain isn't noticeable)
Frame Rate: 20
Aspect: Auto
Same Quality: False
Audio : (Equal to High Compress settings in AVConverter)
Audio Codec: mp2 (
MP3 won't work)
Bit Rate: 64 (96 is the high quality seetings in AVConverter)
Sample Rate: 44100
Channels: 2 (Stereo)
Disable Audio: False
With these settings you should get a file roughly the same size and compression that the AVConverter gave. The beauty about this Xilisoft software is that you can do batch encoding so converting multiple video for the PMP is a snap.
*The advantage of using AVConverter is that I found the Video converted using the AVConverter has better quality than the Xilisoft result (For the same file size and bit rate). So its up to you.
If anyone can recommend a better converter software, please post it. Cause I'm not etirely satisfied with Xilisoft quality.