Notices

I'm watching videos on my WinXP machine that look great. I convert them using Media Convertor for 770 to use with that device, but I notice on the 770 the colour isn't very vibrant.

Does Mplayer have any colour settings that can be manipulated while video is playing?

The backlit TFT on the 770 has a completely different gamma curve compared to CRT. Dark areas of videos and pictures are always brighter, than on CRT due to the display technology.

Try the mplayer command-line options -vf eq or -vf eq2 and change contrast with 1&2, brightness with 3&4 keys.

On my 770 build of mplayer however, these only respond in the first frame of playback. I haven't been able to find a way to specify an equaliser filter setting from the command line.

Just as ArnimS said, currenly you can use various video filters in mplayer though I can't advise anything to manipulate them at runtime. Also filters introduce additional cpu load and can make video unwatchable. If you are converting video anyway, you can try to use some filters to change colors at the conversion stage.

By the way, Nokia 770 graphics chip has some support for gamma correction in hardware, though I'm not sure if this functionality is supported in the current version of Nokia 770 framebuffer driver.

Here is a link to epson mobile graphics chip documentation for those who may be interested:
http://www.erd.epson.com/index.php?o...d=36&Itemid=40