It appears that the "safest bet" for having your burned DVD recognized by the greatest variety of standalone DVD players (especially older ones), is to use NERO's "UDF 1.02" (NOT 1.05) mode.
(Remember to place all files into a "Video_ts" folder - and create an empty "Audio_ts" folder as well, just as a precaution)
(Remember to place all files into a "Video_ts" folder - and create an empty "Audio_ts" folder as well, just as a precaution)