Hi, all I'm test about ftp output. When I setting to AVI file format(output), file play is well.. But, mp4 is not play(using VLC). My option is.. ffmpeg -i inputfile -pass 1 -y -strict experimental -vcodec libx264 -vprofile main -b:v 3072k -s 320x240 -ftp-write-seekable 1 ftp://128.0.0.1/1.mp4 somebody help me T.T