Kosta Vlotis <kosta.brazzers <at> gmail.com> writes: > ffmpeg ... > ".\output\%root_folder_name%\vids\hd\%1_1080p_12000_no_outro.mp4" Please note that ffmpeg does not support outputting VFR in mp4 since November 2010. (All mp4 files produced by FFmpeg since November 2010 are CFR). Carl Eugen