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Looking to buy Smart TV with screen grab function - Questions


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I am not a current owner of an LG Smart TV but I'm looking to buy a Smart TV with a screen grab function built into the TV.  I searched and came upon information in this forum that LG Smart TV's with WebOS on them do indeed have a screen grab feature and I have some questions regarding that.

1. Just to reaffirm my info, do LG Smart TV's actually have a screen grab feature built into them?

2. Is WebOS stand alone software built into the TV set? In other words, is the TV independent of a PC operating system?

3. Concerning the screen grab feature. Is the screen grab feature independent within the TV set/not dependent on any other device to operate?

4. Can you save your screen grab to a USB drive?

5. If you can save your image to a USB drive what format does the TV save them in? JPEG, BMP, etc.

6. What is the max resolution the TV saves the screen grab?

7. Can you do a screen grab of any image ported to your TV from any device? Cable STB, Video Game Console, etc.

8.  The info that I read on another thread here  said  that to take a screenshot on the LG you press the input/123  button on the remote and save it to the photo editing app. Is this photo editing app a part of the LG TV software and do you navigate and execute commands in this photo editing app with the remote control?

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