Thanks for the info Dopc. What is the open source software you are using for video switching? Could you please post a 20 sec clip of video that you have produced so i can see quality of video stream? I would think the video would drag being its USB and a web camera. I have a Logitech 9000 HD but the video is not smooth as a recording from my camcorder.
Thanks again for the info
Chris
I own a 9000, and that isn't going to cut it. While the 9000 will do fine on SD 640x480 4:3 or 640x360 16:9, IMHO it will still look rather "webcamish" as far as fine detail goes. The problem with the 9000 is, while it is capable of an HD resolution, the image sensor in it just can't keep up with HD resolutions at 30 frames per second, which results in the lag your describing. ( HINT: to improve the 9000 lagging in SD* some, take the exposure & gain off auto in the camera properties and bump it down a couple notches and adjust your brightness and gain to make up for it)
The newer c920 will do 720p & 1080p just fine depending on your needs (it's no $3,500 full sensor video camera, but the results aren't bad at all). That's what this boils down to, what is your needs? If its to present yourself professionally and live stream action matches, to start your budget needs to be about 25-100 times what your working with just to get started. If it's to just record your own play or maybe a little action streaming just for kicks, then the webcam route will work just fine as an inexpensive entry level way to get started. The disadvantage to a webcam over a dedicated camera is the lack of a physical zoom lens, and digital zoom sucks so don't bother with it. So when using a webcam, you zoom with the distance from the subject your filming, about all you can do with a fixed lens.
My video is as smooth as 30 frames per second will allow, no lagging or stuttering if that's what your asking about like with the 9000 with a HD resolution. Now if the computer happens to do an update while I'm recording, then the video may stutter as the PC is busy doing other things at that moment (why I set updates to not auto install). As with any equipment, never use anything on Auto, always adjust your camera setting to manual (focus, exposure, brightness, contrast, white balance etc for best results). As for the quality of the camera itself in HD, just do a youtube search for the camera and watch the videos, thousands of them available for the c920 camera. For just being a webcam with such a small image sensor, the results are rather impressive in my opinion.
Now as for the software I use to accomplish this. I use
Open Broadcaster Software. It is used mostly by video game streamers, but it is a powerful tool none the less. Allow me to warn you though, the software can be difficult to figure out if you have no clue how to work with video sources, cropping and video layering. If you have a good grasp of how to work with video, video layers and camera sources and aren't afraid to dive in and play with it, it will handle most basic needs. Not bad for free. There is help documentation with it, enough to get you started anyways and check out the forums for help and ideas. Play with it for a while and you begin to see what hidden power it's capable of.
Hope this was of some help and informative. I could at a later time upload some video for you to inspect, Just not feeling up to it tonight, sorry.
Dopc.