Actually I'd suggest this. It's a proper component to HDMI adapter
So that's the RGB video connections plus red and white for audio
Portta YPbPr Component + R L to HDMI Converter v1.3
https://www.amazon.co.uk/dp/B0088HO1..._FRWYBb4R6CBC5
And then you'd need an appropriate component cable between the DVD player and converter
AmazonBasics Component Video Cable with Audio - 1.83 meters
https://www.amazon.co.uk/dp/B01D5H8C..._PTWYBb57P8RT5