Sunday, January 9, 2011

How important of frame-rate

Important of frame-rate on webcamming sites

We use webcam to record video and sent to another while we are chatting on webcamming sites. So, transfer rate of internet cable or wifi is very important because much rate you transfer much video quality you get. In download rate show how fast to get your friends video and upload rate show how fast to send your video to another friend’s computer.

There are currently (2011) three main frame rate standards in the TV and movie-making business: 24p, 25p, and 30p. However there are many variations on these as well as newer emerging standards. Like Youtube, you see quality choices for HD video, turn it to 720p or more over can display in high quality when look with full screen.

>  The 24p frame rate is also a noninterlaced format, and is now widely adopted by those planning on transferring a video signal to film. Film and video makers use 24p even if their productions are not going to be transferred to film, simply because of the on-screen "look" of the (low) frame rate which matches native film.
>  25p is a video format that runs twenty-five progressive frames per second. This frame rate derives from the PAL television standard of 50i (or 50 interlaced fields per second). Film and Television companies use this rate in 50 Hz regions for direct compatibility with television field and frame rates.
>  50p and 60p is a progressive format used in high-end HDTV systems. While it is not technically part of the ATSC or DVB broadcast standards, it is rapidly gaining ground in the areas of set-top boxes and video recordings.[citation needed]
>  72p is currently an experimental progressive scan format. Major institutions such as Snell & Wilcox have demonstrated 720p72 pictures as a result of earlier analogue experiments, where 768 line television at 75 Hz looked subjectively better than 1150 line 50 Hz progressive pictures with higher shutter speeds available (and a corresponding lower data rate). Modern cameras such as the Red, can use this frame rate to produce slow motion replays at 24 frame/s. Douglas Trumbull who undertook experiments with different frame rates which led to the Showscan film format, found that 72 frame/s was the maximum frame rate at which emotional impact peaked for viewers. 72 frame/s is the maximum rate available in the WMV video file format.

Let’s take maximum of quality for video call on webcamming sites. Advice from below video can help you make you display look better with physical improvement and little tricks.

video show how to get better quality for webcam