<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/4.6.4"> </HEAD> <BODY> Le vendredi 12 avril 2013 à 00:30 +0200, stic@free.fr a écrit : <BLOCKQUOTE TYPE=CITE> I can encode it to a video file without any problem BUT the more I increase the framerate parameter the more the result video has a high playing speed ... !! </BLOCKQUOTE> It looks like your source is producing that same data regardless of the framerate. You need to produce more frames if you want to maintain speed. Nicolas </BODY> </HTML>