Tvheadend

Hello all, I have a question about streaming a local file through tvheadend. I have a local movie set as channel 101 and it works but if I start watching channel 101 now and in 20 min. someone also wants to watch channel 101 they start watching my stream at the +20 min. mark. is there a way to make tvheadend 'start a new stream from the start' or 'create new pipe for new subscriber' any time someone tunes to the local files/channels. Thanks much

pipe:///usr/bin/ffmpeg -loglevel fatal -i /home/movies/01.mp4 -vcodec copy -acodec copy -f mpegts pipe:1

if this has already been answered in the forums great just point me there, my search returned install stuff and stream profiles for recording. Thanks