Samsung Gravity 2

I haven't been able to find a list of exact specs listed from Samsung, so there is conflicting information out there. However, there are a few things I do know.

For 3GP video, it supports h263 at 15 fps, and qcf (176×144). Audio is mono, rate has to be 8000hz, and the max bitrate is 12k.

It does support MP3 and AAC playback!

You can also do playback with H.264 video on baseline profile. Pretty awesome for a little guy. :)

Here's me with my Sony eye candy video again, encoding to 3GP (MPEG-4 simple + AMR), keeping the aspect ratio by padding it with black bars:

avconv -i Sony_Bravia_-_Eye_Candy_HD_1080p-jfdMo4b0U_Y.mp4 -ac 1 -ar 8000 -vf scale=176:100,pad=176:144:0:22 -vcodec h263 -ab 12.20k -r 15 video.3gp