(1) Mencoder Version: MEncoder SVN-r34573-4.4.4 (C) 2000-2012 MPlayer Team (2) Video Format:  MPEG4 encoded in TS format (3) Mencoder Command: mencoder   -ss 13 -endpos 15 -nosound -ovc copy  -of lavf -lavfopts format=ts -o outts.ts sgvideo.ts (4) Problem:  When playing result video 'outts.ts', first 0s frame of source  video sgvideo.ts was displayed for about one second(this part is not correct), then began to play from 13s  of  source video(this part is correct).   If needed , I can upload my source video and resulted video.  But I don't know where I should upload the video files.