FWIW, I had the opposite problem with Encore and DVD-R. It would NOT play in the client’s sony set top unit. I have since been burning with a high end “printable” Verbatim and not experienced +/- R problems. For the life of me, I have no idea why.
I have started “popping” a copy into various players at Best Buy just to be certain. I thiMk the problem is in the encoded being (re)coded into the second software. I also use Matrox X100 and send it out with the video in MPEG-2 and audio unencoded. (just as a straight audio file)
This probably didn’t help much but…….
warmest regards,
Steve