If I understand you correctly, you have a HTPC with a DVD burner but no keyboard! What you want to do is start with a DVD-compliant mpeg file. Then you want to press a button on your remote that will run a batch file that will author this stream to DVD vob/bup/ifo files and burn them to disc.
Tall order but not beyond the realms!
You will need three (free) programs.
DVD Decrypter (easy enough to find)
DVDAuthor.exe and MkIsoFS.exe (Not my work but I'm hosting them in a rar file here (http://nickspage.pwp.blueyonder.co.uk/WESTWORLD/DVDAuthor.rar) ). Copy the folder contained therein to the root of your C drive.
OK, you got the kit, let's roll.
The documentation for DVD Author is here (http://dvdauthor.sourceforge.net/doc/index.html)
but a brief outline of how to... is contained below:
Once you've saved the folder from the rar file I'm hosting,
Open the file DVDAuthor.xml in notepad. It should look like this...
<dvdauthor dest="**Full path of desired output folder eg C:\Movie\DVD-Files\ **">
<vmgm />
<titleset>
<titles>
<video format="**ntsc or pal**" />
<audio lang="--" />
<pgc>
<vob file="**full path eg C:\Movie\TVcapture.mpg **" chapters="00:00:00" />
<post> call vmgm menu; </post>
</pgc>
</titles>
</titleset>
</dvdauthor>
every time you see **, remove the asterisks and the text between and replace with the relevant info but leave the quotation marks. Once done, resave this file as C:\DVDAuthor\dvdauth.xml - I'm using a different name so you don't lose the original if you screw up!
Now copy and paste this into notepad:
@ECHO OFF
REM Capture Batch Control
"C:\DVDAuthor\dvdauthor.exe" -x "C:\DVDAuthor\dvdauth.xml"
"C:\DVDAuthor\mkisofs.exe" -o "**Output path eg C:\Movie\DVDImage.iso **" -publisher "MYHTPC" -volid "" -dvd-video "**full output path from dvdauthor xml file eg C:\movie\DVDFiles**"
"C:\Program Files\DVD Decrypter\DVDDecrypter.exe" /mode isowrite /start /src "**output file from mkisofs eg C:\MOVIE\DVDImage.iso**" /dest **DVDwriter drive letter eg E:** /close
Again insert relevant data in place of anything between **'s and delete the **'s, leaving the ""'s . Note lack of quotes round the drive letter in the last line.
Save this as your batch file. Now program your remote to run the batch file at the touch of a button.
Once you have captured a multiplexed stream (ie an mpg file with dvd compliant video and audio), simply put a blank DVDR/RW in the drive and hit the button. The rest should be automated.
I hope :D
EDIT - one thing I've just thought of - you will have to delete all the files created (ie the video_ts and audio_ts folders and the image file) after burning before running the batch file again. You could put an erase command at the end of the batch file to delete the contents if your output directories.
Cheers
Nick