Too bad that didn't work.
Do you know about this site:
This fellow has a bunch of command line tools to work with CC and subtitles.
The one you need to try first is called scc_rip.exe. It lets you check (and extract) an mpeg to see it contains CC in it. If they aren't there then at least you will not waste time trying to activate them.
To check and extract CC line21 / line 22 using a txt editor like notepad ...you only need to set up a bat file like this:
scc_rip -d -12 yourvideo.mpg
Save that in a file called ccrip.bat and double click on the bat file to run it from your explorer window. Make sure the exe and the mpeg are all in the same directory.
To see all possible options make another bat file and call it subrip help.bat. In that file just put no parameters:
The output will display all the options in a dos box.
You may note that he has a cc muxer (cc_mux.exe) but don't get too excited it can only mux 1 MB of video data per hour. A normal DVD is about 4 GB so have you got 4000 hours to spare ?
The only other muxer I found so far on the net that claims to mux CC is called mpegRepairHD (I think that's the name) but at $4000 bucks... :sad:
DVDMaestro (dead) and Sonic Scenarist are able to imports CC line 21 but the first one is unavailable and the latter is too expensive for home hobby use.