FFmpeg + Nokia 7210 Video Clips.
Nokia 7210 supports video clips of container mp4 with following specifications.
Video Codec: mpeg4 Video Size: 320x240 Bit Rate: 500 Frame Rate: Auto Aspect: Auto Same Quality: False
Audio: Audio Codec: mpeg4aac Bit Rate: 96 Sample Rate: 44100 Channels: 1 (Mono) Disable Audio: False
So to make a clip playable in phone,
Use
** ffmpeg -i