M. V. <bored_to_death85-at-yahoo.com <at> ffmpeg.org> writes: > what I execute is : > root# ffmpeg -f h263 -i input_video.rtp output.flv I don't think forcing h263 format if you know that the content is not h263 makes sense. More important: If you want to transmit rtp, why do you have file input? Carl Eugen