YouTube uses 16:9 aspect ratio players. If you are uploading a non-16:9 file, it will be processed and displayed correctly as well, with pillar boxes or letter boxes provided by the player. If you want to fit the player perfectly, encode at these resolutions:
The YouTube header in your channel should be approximately 2560 by 1440 pixels. The large size is due to the fact that YouTube wants to be able to display your channel header image on the largest devices on the market right now, TVs.
The dimensions of a profile picture should be about 800 pixels by 800 pixels for YouTube. The picture used on YouTube will be the same one used for Google+.
That dimension will change with the size of the window and the header height.
The land of youtube =D
Google does not allow the upload of background images on YouTube profile pages anymore. Only the header image and background color is changeable.
some people think there is a fourth dimension, maybe even a fifth dimension. type this into youtube, "Dr. Quantum two dimensional planet"
One can download the Fifth Dimension songs from a number of webites such as iTunes, YouTube, Oldies, last fm, the pirate bay, and myspace to mention a few.
If you want to make a twitter background, the best option is Youtube so go to Youtube and type in How to make a Twitter Header using Photoshop and there will be a tutorial on how to. Just follow that and you should be good.
Frame Header - Network Header - Transport Header - Data - Frame Trailer
It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.It is sometimes referred to as the header row.
Diving header, glancing header and powerful header.
The Header.
Text printed at the top of the page is called a header.
Header file is a file which is meant to be included into another file during compilation. Examples: string.h, stdio.h, inttypes.h. Header pointer is a pointer to an object called header (for example header of a linked list).