Well, that topic area is "DVD ripping". The content is
protected by various means. You can get programs, to make
copies. And on some optical drives, you can modify them to
remove the "RIP lock" (they don't run very fast, when you're
trying to copy a DVD video disc). Part of ripping, is getting
the optical drive to treat the disc as a data disc, and reading
it at maximum speed, rather than running at a sedate approximately
1x speed while you're trying to make a copy. If the drive
runs slow enough, it might take 2 hours to make a copy.
http://en.wikipedia.org/wiki/DVD_ripper
The only DVDs I have here, are ones I made myself (recording
with WinTV card), so I don't even have any first hand experience
with ripping. Or own any ripping programs. (Just, not interested.)
Another way to rip, would be to connect the computer output
to a "capture card". But the capture cards have restrictions
on the resolution they can copy. And DVI and HDMI video outputs
have the ability to use HDCP (encryption on the monitor cable),
to prevent making copies with a capture card. The VGA analog output,
or component video (YPbPr) aren't protected the same way. So in principle,
a capture card would be an easy, 1x (normal speed) ripping method.
But the DMCA in the States, is there to make aiding people to do
this, illegal. DVI, HDMI, VGA, Component YPbPr, are the high quality
outputs on the computer, while things like Composite or S-Video (four
pin cable), are inferior.
(Example of capture devices, which do *not* participate in HDCP. It
would be illegal for these devices to have an HDCP key, and make copies
of encrypted output. These cards and devices, can make copies of
video camera HDMI output which is not encrypted. Resolution is also
limited. I think the card does 1080i but not 1080p. And the USB3
version, needs a "good" USB3 port, as the bandwidth used is rather
high.)
http://www.blackmagicdesign.com/products/intensity/techspecs/
http://www.newegg.com/Product/Product.aspx?Item=N82E16815100148
(read customer reviews - they're using FRAPS program, to capture...)
http://www.newegg.com/Product/Product.aspx?Item=N82E16815100049
On VCRs, there was Macrovision protection on some titles, to
screw up the sync, to make it hard to make copies. And Protected
Path, is the modern equivalent with computers. There are thus,
plenty of issues to learn about, before you can rip stuff.
http://en.wikipedia.org/wiki/Protected_Media_Path
Player software, is going to vary as to how well it continues
to protect the content. Ripping software, good ones, the developers
have a nominal "headquarters" outside the reach of US law (or, as
far away as they can get), to conduct their business. All to
prevent you from storing your media library on a hard drive.
Even the video card "mirror mode", was in some cases removed,
presumably to make it harder to connect capture devices. So
there's a roadblock, every step of the way. Which is why
ripping software is pretty popular.
Paul