DVD sound too quiet



Hi, I am trying to play a dvd through my laptop (too scratched to play on my dvd player), but the sound through the laptop is too quiet. I’ve got it plugged into s-video and audio input of my TV, and most things (mp3, games etc) are easily loud enough which leaves me to believe it just this DVD.
Is there any way I can boost audio output from the laptop or boost the dvd volume when copying it?


First time on forum so sorry if I make any mistakes.
I have just bought a Lite-on standalone DVD recorder to transfer all my saved programs from Sky+. I have a similar problem, the picture is fine but the volume is very quiet when played back either on a computer or through the TV. Any ideas from anyone?