支持的视频格式：
AVI file
picture width: 320 or 212 (for Nokia 7710), or 208 pixels (for the other phones);
DivX orXviD encoded video
8kHz or 16kHz, MP3 encoded audio
interlaced, max. 15 frame per second.

Recommended bitrates:
video bitrate 80 - 200 kbps
audio bitrate 16- 32kbps, 16kHz, mono
using these settings, a 2-hour movie will be about 70Mbyte - 150Mbyte.