My Verizon vx8300 will play movies. I’ve never really used it for that, but I decided to try today, as I was fiddling around with other things anyway.
After a certain amount of googling and trial and error, I found I could turn a FLV video from Youtube into a 3GP video I could watch on the cellphone, using the following incantation:
ffmpeg -i papa_legba.flv -acodec libfaac -s 176×144 -ar 8000 -b 120000 -vcodec h263 -ab 10.2k -ac 1 papa_legba.3gp
Where the video happens to be of the Papa Legba song from True Stories.
I’m putting the incantation here so I can remember it and other people can find it.