Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Can this webcam work with Windows 8.1?
Document: I connected it to my desktop with windows 8.1 and spent 4 hours trying to make it work. It never worked
H264 compression mean thatA) My computers processor doesn't have to work as hard to process the image.B) Modern standard that plays well with a variety of programs.Using x4 on a Windows 8.1 pc, to livestream via Wirecast.Good wide lens too. Wider than other camera I have had in the past.
This cam is one of the one's that Skype recommends and is suppose to work with XP service pack 3. They said it was just not compatible with my Custom built computer mmm. Do yourself a favor and don't buy this Logitech c920. If your running Windows 7, 8 or 8.1 maybe the c920e they sell will work for you. I have always been a fan of Logitech's items but been having problems with some of there equipment they build now and the quality.
but it would be nice to have some. I didn't go on the Logitech website and download anything because I was actually kinda scared of it. then when I did decide to try it (windows 8.1) told me I didn't need to download anything. so I use the webcam with any of the settings/manual on Skype and google+ any and everything else. lolthe image is mirrored for me.
I purchase this webcam 7 months ago for a PC that runs windows 8.1. Initially the camera worked with the desktop applications, including SKYPE, but then all of a sudden stopped working. After trying several things on my own and calling tech support we've established that the camera works in an older laptop running windows 7. At this point logitech was satisfied and suggested to contact the PC manufacturer.And then I found some post in the Logitech forum with a couple of other customers having exactly the same issue.
Originally when using the C920 I thought it was a great little camera.After about a week of use, I run windows 8.1 pro on a custom built desktop. This webcam has some major defects in the software realm.There is no Logitech software for Windows 8, so we're stuck with the camera app which is so simplified I cannot even change the quality at which I'm recording During long recording sessions audio latency is hugely apparent in the recorded aftermath. Like, audio will be over two seconds off.
Picked up this webcam on an impulse to test out for video conferencing at work. Anyone curious whether or not this would work on Mac OS, NO issues whatsoever. No drivers needed for Mac, and Windows installed on it's own with no issue (Win8.1 and Win7)Great quality and the picture is great. Good buy.
A best webcam for Skype at HD.I am amazed with the audio quality as well, it picks the even very low voice, great. Well work the money. Just mount it on a TV and run them on Windows 8 Skype app.
I use to to Skype with family and webcam for my bf and its a very neat clear webcam. The only reason I'm giving it 4 stars instead of 5 is bc I have windows 8 on my laptop and it seems to work best on my desktop which is windows 7z
Purchased this item as an upgrade to my Microsoft LiveCam webcam, because the Microsoft product that I purchased a year ago would not work on my laptop after I upgraded to running 64 bit version of Windows 8 (could not find reliable drivers) Received the C920 right on time (you've got to love amazon shipping), plugged it in, and it work perfectly, just as expected.
Answer: I just got an e-mail from Logitech support, stating that all Logitech webcams are not fully supported in Windows 8.1.  In other words, from my experience, the basic webcam functions, video and audio work, but the advanced features (zoom, pan, tilt, etc.) are inaccessible in Windows 8.1.  Logitech support also essentially said that they do not have a fix for this problem and  that they do not know when a fix for this problem will come out.