can't play hdtv.avi-fqm files on set top box

i have a set top dvd recorder that plays my old avi files, i have some new avi files,but when i burn them as data files in Nero, they won't play on the recorder, they play in the VLC player.

the only thing i see different is the ending of the files. they have a name+hdtv.avi-fqm or .hdtv.xvid-fqm or hdtv avi at the end , could this be the problem?

Thanks for any info you can give me on this ,or where to get help. xbill