Originally Posted by hazydayz:
“This is a thing i always look out for. However on some archival programs I watch, there tends to be a mix or current HD 16:9 and 4:3 footage and I notice on some of the older footage the black bars change thickness, sometimes it is a little bigger, sometimes smaller. I think maybe sometimes they stretch the picture but why?
I also like DOGS in the areas to the side when 4:3 footage is shown. I get annoyed on the SD TCM channel because their DOG just hangs over the safe zone yet on older programs like Gunsmoke, i guess it must have been made with black bars at the side, it blends in with their own black bars so the TCM logo is complletely in that area and not hanging over onto the picture.”
When they insert old 4:3 footage into new programs, they will crop as much as they can so that the black bars are less. They never stretch it unless they are a bad broadcaster (very low budget or something).
Regarding DOGs I believe that if the dog moves over to the safe area then its because they are using the same feed.
Either there is two playouts and the HD playout will take a feed from the SD playout to Upscale SD programs (I believe channel5 do this).
Or there is one feed and they use AFDs to create a second downscaled feed for the SD channel (BBC do this I believe).
I assume that in the latter example the AFDs uesd to create the SD channel will also control where the HD DOG goes.
As a side note I presume in the first example with two playouts, that the SD playout will take a feed of the downscaled HD playout.