Question about energy-mass relationship

[parshyaa]

Why the mass of disc does not changes according to Einstein's equation(e=mc^2) when we insert it inside a disc player and it shows us energy in the form of video on a tv/monitor screen.

• I think there's something wrong in this question, can anybody point out the error with reasoning.

 

[SlowThinker]

I think there's something wrong in this question, can anybody point out the error with reasoning.

The disc does not change, therefore, its mass does not change.
Can you describe your reasoning in more, smaller steps?

 

[Orodruin]

Can you show the video without the TV and the disc reader being plugged in?