DVD DL-related question

[VenusAndMars]

My dvd unit is an HP dvd640. I recently by mistake bought double layer discs which I realize have twice the capacity of a standard disc, and I now wonder if they

 

1) will be recordable in this drive using ImgBurn (I typically burn only 600-800 MB, 'shrunk' movies) and, if so,  

2) will they play OK in a standard DVD-player?

 

Thank you. 

 

 

PS: As the discs will (probably) be useless to me anyway I just went ahead and did the deed. First IB warned that the movie would easily fit on a normal disc which I knew already, then this message came:

 

 

and this I don't understand at all. What does that mean?

Edited July 2, 2016 by VenusAndMars

[LIGHTNING UK!]

They should play fine.

 

I expect you can answer yes or no to that second prompt and they'll both be fine. I can't say I have a definitive answer as to which one actually better - it's not something I've tested.

[VenusAndMars]

Right, but the next message is...

 

 

 

and that sounds kinda' final to me. 

[LIGHTNING UK!]

Was that after clicking 'Yes' ?

 

It isn't 'final' in your situation, no

 

It's basically the same as clicking 'No' on the previous one.

[VenusAndMars]

Well, not final, but IB tried to burn the thing despite all these reservations, started trying, an error message popped up after a short while - the text of which I forget now - then made try number two (of 20; there was a counter), failed and so forth. I gave the thing (and that disc) up for lost on the third try.

No sense whipping a dead horse.

So I guess I should simply buy the right kind of discs next time..