Android not show the video

the video not shows
the server log shows
Cannot display video. Uri=file:///data/data/uk.org.xibo.client/files/288.avi. What=1. Extra=0.

you might want to convert that to mp4 H264 encoded video, as that’s the most android friendly video format.

but h264 don´t work on microsoft windows and the most of player, are windows