by ddvsmartmouse • December 15, 2012
The transition from analogue Beta tape to a 100% digital world is pretty much over. So, you would think that this has simplified the delivery process of your latest television commercial; but that is not the case.
Sure, you no longer have to deliver to each broadcast network and cable provider their own copy of your spot on tape or DVD. But you do have to create a each network and cable provider their own version of the digital file.
Why? Because the new world of digital files allows for countless ways to make the same video play.
There have always been different file types, most notable being WMV, MOV, AVI, and MPG, and odds are you have had some compatibility issues with one or more of these before.
The trick with delivering a file to the broadcast channel or cable TV provider is exporting the correct file type for that station’s standards.
KNBC wants .MOV while KUSI wants .MPG. KSWB and Cox Cable want .MOV as well but not the same kind as KNSD.
There are different types of each 'codec' extension and you will need to know them all in order to deliver the correct format to each channel.
The differences in extensions are called codecs.
This is how the digital file gets compressed and coded, and it will have drastic differences to the files look and final size.
KNBC wants the .H264 codec while KSWB wants XDCAMHD, and Cox wants DVCPROHD.
And this is just the HD versions they accept. If you want to send a standard-def file, the file will be different.
Another difference to keep your eye on is the frame size and frame rate (speed).
Before the days of HD, there was only one frame size and frame rate, but now there are multiple.
Some stations want 1920×1080 while others want 1280×720.
The frame speed wanted can be 29.97 or maybe 59.94.
There is also the whole interlaced or progressive and either upper-odd or lower-even, but this isn’t worth trying to explain here.
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