By using this site, you agree to our updated Privacy Policy and our Terms of Use. Manage your Cookies Settings.
437,913 Members | 1,356 Online
Bytes IT Community
+ Ask a Question
Need help? Post your question and get tips & solutions from a community of 437,913 IT Pros & Developers. It's quick & easy.

In video quality, what does "p" stands for?

P: 12
I observe in several websites and movies esp in youtube the measurement in video quality but im very curious about what does p stands for? like videos with (240p, 480p, 360p, 720p)
Mar 1 '12 #1
Share this Question
Share on Google+
2 Replies

Expert Mod 10K+
P: 12,369
It stands for progressive. i stands for interlaced. Progressive scans the entire frame ever time it is refreshed. Interlaced refreshes every other line alternatively.
Mar 1 '12 #2

Expert Mod 5K+
P: 9,731
Adding to Rabbit's post:

That's why you see lines on new screens when you view Interlaced video; whereas when you view progressive videos you don't see them.

The idea behind the Interlaced video is to reduce the bandwidth required to send the information: every other line of the image is visible from frame to frame. It was used a lot for TV broadcasting for many many years. As technology became better, and our means to transmit data became better, we are now able to transmit progressive video (were every frame has all lines of data).

If you're looking to save on bandwidth while broadcasting video over the internet, you may consider using interlace over progressive...but if you're looking for a better quality in picture you may choose progressive over interlace. You will either have to sacrifice bandwidth or picture quality.
Mar 2 '12 #3

Post your reply

Sign in to post your reply or Sign up for a free account.