picture changing on gold hd and gold + and yestetday
i can be watching these channels and can be watching something and theres a full picture and then all of a sudden a bar comes down each side of the screen . i have seen some of the progames before and there has been no bars .. i have reported this twice . the first time i was told to change the hdmi lead and swap box over to see if it made any difference (i did have2 other things wrong then but those are ok now) second time i was told i should try different hdml lead which i said i had done . when i said i tried swapping boxes over to see if that made a difference. i was told i should never have done that. can you give me some idea what causes it
Re: picture changing on gold hd and gold + and yestetday
24-11-202000:18 - edited 24-11-202000:26
When widescreen was introduced it caused several issues with programmes made in the previous 4:3 format. The biggest of these was “screen burn” on the latest plasma screens. To combat this 4:3 images were “stretched” to fill the 16:9 screen. Widescreen was also an anomaly transmission wise, as standard definition broadcasts are still 4:3 with blank slots transmitted at the top & bottom which the receiver discards when a widescreen trigger signal is sent.
With the advent of HD, the transmission is true 16:9 widescreen, which Gold has now moved too. This means the older 4:3 programmes have generated side panels to fill the 16:9 picture. Hence the SD +1 channel requires reprocessing to convert everything back to 4:3, then add the top & bottom panels & trigger signal. Plasma screens are about as rare as hens teeth now, so the added expense of reprocessing the older programmes is now unnecessary & both the HD & +1 service can be transmitted in the same format.
Expect more & more 4:3 “strechyvision” broadcasts to disappear as broadcasters remove the unnecessary reprocessing & return the programmes to their original format.
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