To send mms video on a 3G the same way as on 3GS would something like this be possible?: 1. Record a video with cycorder. It makes an MP4 file. 2. Use ffmpeg to convert the MP4 to 3GP. 3. Hex edit/modify the carrier file to put the 3GS style interface instead of the simple 3G style 4. Send the converted video The difficult part would seem to be number 3 since its never been done before.