Norvin said:
After a few years, this senior cannot remember all of the programs that
use a driver, let alone remember where to go for an update. As an
example: my computer used to be able to play DVD movies, and suddenly it
did not play any more. I did go to MS to check my update and it said
everything was OK. Since I didn't make any changes to my computer, I
assumed that one of the auto updates from MS made a change.
Thanks for your response.
In general terms, playing a DVD "uses CODECs" or coder/decoder software.
What is special about the DVD CODEC, is it is covered by a patent.
The licensing body that owns the patent, gets software developers
to pay so much per customer using the software. Someone has to pay
for that.
With Microsoft, that means they have to decide whether they will
bundle such a CODEC with the OS or not. On Windows 8, the decision
was to only provide the necessary CODEC with the Media Center upgrade.
I have such an upgrade (it was free at the time) for Windows 8, and
the "useful part" of the upgrade, was a grand total of two files with
the CODEC stuff in it.
Now, that's the "official" route. You have to check what the
DVD support is like, for each OS. (Whether it's only via Media
Center, or is baked into the OS.)
You can get commercial player applications, where you're paying for
the CODEC with your purchase of the product.
At one time, you could also get the CODEC from a third party
provider. (I think NVidia sold a CODEC package for OS level playback
of a movie.)
There are *free* applications, where the CODEC is included. If the
software is authored in a country, where no legal remedy is available,
the software can be made available to the rest of the world.
For example, you could try VLC.
http://en.wikipedia.org/wiki/VLC_media_player
I can't verify VLC plays commercial DVDs here... because I don't
have any commercial DVDs.
*******
If you wanted to examine the actual CODEC situation on a machine,
you can use the GSpot program. But that will not tell you that VLC
could play a movie for example (so it doesn't know anything
about CODECs that are baked inside a player program). What GSpot
does, is use the OS CODECs if available. GSpot also makes it
possible to list all the CODECS installed in the system.
And yes, it takes a while to figure out how to use this.
But still, a very useful program.
http://gspot.headbands.com/v26x/GSpot270a.zip
v2.70a 22 Feb 2007 20070222 Vista compliancy, WMV, MOV,
extended MP4 & more
*******
Since there are multiple means by which you may have
gained a CODEC (and probably a few means to break them),
I don't know if I could give a recipe as to how you'd
hunt down what just broke. It would probably start with
a review, of what software had been installed on the machine.
For example, if you bought a recent copy of Nero, which
smothers the computer with 100MB of install files, you
could end up getting movie CODECs from it.
HTH,
Paul