simple VLC solution for HLS
or as UDP downstream via ffmpeg/multicast :
ffmpeg -i my_movie.ts -vcodec mpeg2video -pix_fmt yuv420p -me_method epzs -threads 4 -r pal -g 45 -bf 2 -trellis 2 -cmp 2 -subcmp 2 -s 4cif -b 3000k -minrate 3000k -maxrate 3000k -bufsize 1835k -threads 0 -bt 300k -acodec mp2 -ac 2 -ab 192k -ar 44100 -async 1 -metadata service_provider="Some provider" -y -f mpegts udp://239.0.0.1:1234
or via VLC:
--vlc -vvv my_movie.ts sout="#transcode{vcodec=mp2v,vb=3500,fps=25,scal=1,width=768,height=576,cbr, \
acodec=mpga,ab=192,\
vfilter=croppadd{cropleft=0,croptop=2,cropright=0,cropbottom=0}}\
:standard{mux=ts,dst=239.0.0.1:1234,access=udp,sap,name="test"}"