I just this morning worked out how to encode video using MeWiG (a frontend for mencoder) for the X20, so I thought I'd share this guide with you folks.
You'll need to download
MeWig as well as
Mplayer.
Open MeWiG.exe. On first opening it will prompt you to set up the config file.
Enter the locations of mplayer.exe and mencoder.exe.
MeWiG will open on the Files tab. Enter the location of the file you want to convert and the intended location of the finished, encoded file.
Click Next.
At the Sound Settings tab, select Encode as MP3 (using Lame), change the bitrate to 128kbps, then tick the Resample box and change the value to 44100.
Click Next.
At the Video Settings tab, select "Encode using ffmpeg", and under FourCC tick "Force FourCC" and select XV[D. Then go to Options for ffmpeg and select mpeg4 from the codec drop-down list, select Single Pass - Match Bitrate, and enter 512 as the Average Bitrate value.
Click Next.
At the Video Filters tab, tick the "Scale Image" box and enter Width: 320 and Height: 240. Tick the "Align by" and make sure it's at 16. If you're adapting a widescreen image for the X20 you might have to play with the Crop settings too. You can click Preview to get an idea of what your output video should look like.
Click Next
On the Encode tab, select your priority and whether you want it to shut down after encoding or not. Then click on encode. It shouldn't take too long, and it isn't quite as flaky as iriverter.
If you have any questions or comments feel free to leave a response here.