Problem converting .flv files to play on TV

[br945]

I have downloaded two clips from youtube as .flv and joined them.

I tried to convert them using DVDFlick and burnt them on CD-RW as DVD.

I have two problems:

First,
The file size which is 62 MB in .flv format, bloated to an incredible 2.3 GB so that one CD-RW could only accommodate about one third of the total.

Second,
When I inserted the CD-RW into the DVD player, it displayed the remark" cannot play this disc"

Can anyone advise what might have gone wrong.

Further, in which format should i convert and burn the files on CD-RW to keep it to a respectable size and also view it on the TV?

Thanks for detailed advice as I am an amateur.