Best way to edit DVB TS, extract Subs, fix Aspect Ratio and output to Mpeg?

[Gibson's Squares]

I have some MPEG-TS files of DVB-T TV broadcasts. The channel generally broadcasts in SD, 544x576, 16:9, and swaps to 4:3 AR for certain broadcasts. The files I have swap between the two AR flags on the fly, for ad breaks and intros, etc, but ultimately I'm only interested in the 4:3 content.

For each file I'd like to be able to:
* Check for any errors in the transport stream and fix them
* Edit ads out (on i-Frames so the file doesn't get re-encoded)
* Extract the subtitles of my final edit
* Output to Mpeg2 file without re-encoding
* Ensure the whole file is set to 4:3 and any 16:9 flags are not present.

What is the best way and order to do this? I have access to VideoRedo, Womble MPEG Video Wizard.

[netmask56]

ProjectX (for SDTV MPEG-TS files) or TSDoctor a more modern solution that will handle HDTV as well as SDTV or VideoRedo