avisynth with a programme recorded off the TV (satellite STB)

[pooksahib]

Hi. I recorded a TV programme and now have it on my HD (a .ts file). It has 2 audio streams (one being 'audio description') and 3 text streams. All I want is the video and the main audio in my edit. So far, the only way I've been able to do that is to run the ts file through toolnix (de-selecting all the unwanted streams) and then use avisynth on the new mkv file. Is there a better way e.g. a script to use on the ts file that only processes the video and main audio? Thanks.

[LigH.de]

You can use FFMS2 or L-SMASH Works as source plugins; FFAudioSource or LwLibavAudioSource allow to specify one specific audiostream if the container contains several.