fqm is just a nick of a person or the name of the team releasing videos.

you should read a manual of you set top box and see what kind of video resolution it supports. Most probably your DVD player can't play HDTV videos because their resolution is higher than used in DVDs (720x568).

You can try to download videos with smaller resolution. You may also recompress videos so that they fullfil all requirements needed for your DVD player. Or you can get a better set top box