DVD authoring question

[Nigel Ridley]

I downloaded a [legitimate] free movie in wmv format and want to convert it so I can burn it to 
DVD and watch it on my TV.

I tried using ffmpeg with:
ffmpeg -i name_of_file.wmv -target pal-dvd -aspect 4:3 name_of_file.mpg

but although I got a file which is playable on my computer it won't play on our [TV] DVD player.

What must I do to get it to play on a regular DVD player?

Blessings,

Nigel