What formats of video file are supported in the Android emulator?
I understand that it probably won't play in real time, but what ones will play at all?
It supports H.263 encoding and decoding, H.264 AVC and MPEG-4 SP both only decoding.
On an emulator the playback quality in terms of speed or lags might be a bit cumbersome.
Checkout the chart of all supported media formats for more information.