I tried saving a dvd as an disc image file. I was able to do so, and saw that the default is to save it as a .toast file. I can access it on my hard drive and watch it.

However, when I try to make a Video_TS compilation cd, I have a problem. I can drag a .mov file just fine. But, when I try to drag the .toast file, I get this message: File is an unsupported format and cannot be imported. Huh? I created it in Popcorn. I don't know much about _TS files, so that must be the problem.

So, I guess the real question is ---- when saving a dvd as a disc image, should I save it as a .toast file, or give it another extension? Will other extensions even work? Again, I am saving these as disc images so that I can later put together compilation discs, with chapters from multiple dvds.

This gets back to your other question about mounting disc images. When you save as disc image you get a .toast file. When you mount that file you can access its contents, such as the VIDEO_TS folder that is inside.

OK, got it. I double clicked on the disc showing on the desktop, and it opens up a window showing the Video and Audio _TS folders. Thanks!