That is the downside of Blue-Ray.. In days of old you had A/V out (3 cables, white, red and yellow) today it's HDMI.. The two are not easily converted.
Now for those who had TV's with no A/V (line) in, you could, back in the DVD days, spend oh, say 20-30 bucks on a box that turned A/V into RF-coax to the TV
You can get the same kind of device for HDMI, ,, Last time I searched they started at around 10x the price though (150-300 dollars)
Home is where I park it!