Thanks all. How I end up with a list of files...
I trim and tidy up unencrypted recordings in video redo 5 (remove ads & padding), and through trial and error have discovered that to preserve 5.1 audio the videos are best exported as m2ts.
Even though VLC identifies these files as multichannel audio, the hummy doesn't at least not with my Yamaha surround sound bar.
I've worked out that it does identify and correctly play the 5.1 audio if there are sidecar files, so I rename the m2ts to ts and run sidecar.
I have a working files folder which I dump the newly created ts files into, so a way to automate sidecar to run on a particular folder (or even the whole videos folder?) and recreate missing files would be a big time saver.
Cheers