What to use for cel phones?

[FreierGeist.]

Hi all,
I'm quite off this subject and since I'm planing to do this professionally I'd like to nknow what's the specifications/codecs/resolution/stardard for encoding video for this kind of "support".
I searched throug the Forum but didn't find this specifications or standards for this kind of media.
If someone could enlighten me on this subject or point me where to find those infos I'll be really thankfull.

THANKS!

[Zero1]

I unfortunately don't have any concrete specs for you, I can tell you of a few observations though.

For Symbian series 60 OS' there is a player called Smartmovie which can handle MPEG-4 ASP (ie XviD) and MP3 contained in AVI. This is obviously very convienient. Decoding speed is very good. A video will play quite smoothly at 208x176@15fps (approx 140kbps ABR) with Mono MP3 @ 16/22.05/24KHz @ 32kbps. This isn't really standard and requires a 3rd party player.

Recently however, I've been playing around with a more standard format. This time I am using XviD again, but at 176x144 (which is a common resolution for mobile phones, another is 128x96). The internal Realone player didn't seem to want to play my MPEG-1 Layer 2 stream, and nor did some media players. VLC handled it fine. In view of this I tried LC and HE AAC, both worked fine when contained in MP4. Playback was not satisfactory though, it was sluggish and seemed to skip frames. This might be from me using AAC now instead of MP3, but I didn't think it would have such a large bearing. The only other thing I could think of is that the player is just poorly optimised.

[FreierGeist.]

Thanks Zero1!
I'll play around with some settings.

Thanks again.

[Elias]

176x144, Stereo or Mono AAC, XviD ASP, 1 audio/video stream, 15 FPS (you can raise the FPS if you lower the resolution though), and of course: mp4.