As for a suitable script for the sample you posted, this looks pretty good to me:
Code:
LWLibavVideoSource("vlc-record-2016-01-12-21h36m08s-20160110 rangers-cowdenbeath english.ts-.ts")
a = LWLibavAudioSource("vlc-record-2016-01-12-21h36m08s-20160110 rangers-cowdenbeath english.ts-.ts")
AssumeTFF()
QTGMC(Preset="Slow")
AudioDub(last, a)
This will result in a 50 fps clip. If you need the original 25 fps, add "SelectEven()" after the QTGMC() statement.