Sample with Farsi teletext from videolan ticket #8594
$ mplayer IRIB602MHz.ts -demuxer lavf -vid 3 -aid 5 -sid 0
$ mplayer IRIB602MHz.ts -demuxer lavf -vid 5 -aid 6 -sid 1
$ mplayer IRIB602MHz.ts -demuxer lavf -vid 7 -aid 8 -sid 2