Originally Posted by frankcastle1975
Would I be correct in saying that de interlacing is the process of converting analog video signals to a different format?
Who would need this feature?
No. Read this: http://en.wikipedia.org/wiki/Deinterlacing
What is the role of a video card? Why have a sound card?
Lets take a few steps back before we answer that.
A basic computer consists of: Motherboard, memory, HD, CPU. All computers in existence have these basic components. Over the past few years, motherboards have grown to include additional features to differentiate themselves from the competition. In addition, the major chipset manufacturers (Intel/AMD) have been one-upping eachother.
The result is: consumer motherboards that can be used in a HTPC with some really great/advanced features. Solid integrated video, 8channel audio, onboard RAID controllers, etc. These used to be additional hardware you'd HAVE to purchase.
If you're building a HTPC today with the latest generation of parts, integrated audio and video (meaning - they're built into the motherboard) are good and will work for 90% of all HTPC builds.
What you gain when adding a video card:
Ability to play graphics intensive games on your HTPC
Offloads video related tasks (in programs that have hardware acceleration) from your CPU
What you gain when adding a sound card:
The ability to output multichannel analog audio, if your motherboard doesn't support such a feature
Better Digital-to-Analogue processing