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Images for a TV screen
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Jul 14, 2015 06:19:48   #
shells Loc: Chicago
 
I have been asked to load some images on a CD so they can be watched on a TV screen. Is there a minimum or maximum amount of ppi that I need to be aware of?
Thank you !

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Jul 14, 2015 06:27:45   #
Singing Swan
 
Not that I know of, but it is better to have the largest size possible.

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Jul 14, 2015 10:53:11   #
Armadillo Loc: Ventura, CA
 
shells wrote:
I have been asked to load some images on a CD so they can be watched on a TV screen. Is there a minimum or maximum amount of ppi that I need to be aware of?
Thank you !


shells,

You have asked a general question that cannot be answered without much more information from your side.

What type of TV? Digital? Analog? Aspect Ratio? ????

If you have no idea try using a ratio if 1024 x 768 pixels for the image size.

Michael G

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Jul 14, 2015 11:16:49   #
Peterff Loc: O'er The Hills and Far Away, in Themyscira.
 
shells wrote:
I have been asked to load some images on a CD so they can be watched on a TV screen. Is there a minimum or maximum amount of ppi that I need to be aware of?
Thank you !


You could make an assumption that the target TV is HD 1080P format, so a vertical resolution of 1080 pixels and then do a batch conversion.
Other TVs should be able to convert / scale . Unlikely to be a 4K device .

Pixels or dots per inch shouldn't matter .

Good luck.

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Jul 15, 2015 08:09:37   #
zigipha Loc: north nj
 
dpi is meant more for printing, you want just total resolution.

standard def is 640 x 480; anything beyond that is wastful
hd could be 1440 x900 or 1920 x 1080.

so 2k x 1k would fit the bill

if they have 4k, then 4k

no downside to have higher res pics (player will still render the entire image onto the scree

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Jul 15, 2015 08:15:34   #
Bill Houghton Loc: New York area
 
There are several way to see how it's going to work before hand it the TV is of the Newer Flat Screen.

Most of the newer models have a the ability to accept a thumb drive, that will show pictures right from the thumb drive.

They also have an HDMI port where you cam plug your laptop into it's HDMI port. Giving you the best resolution.

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Jul 15, 2015 08:32:21   #
jmizera Loc: Austin Texas
 
shells wrote:
I have been asked to load some images on a CD so they can be watched on a TV screen. Is there a minimum or maximum amount of ppi that I need to be aware of?
Thank you !


It depends on what video resolution your software outputs. I would choose 1080P, or 1080i if not available.

Your images should be at least 1920 X 1080. If your software "zooms in" your pictures should be even higher resolution.

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Jul 15, 2015 12:22:42   #
revhen Loc: By the beautiful Hudson
 
shells wrote:
I have been asked to load some images on a CD so they can be watched on a TV screen. Is there a minimum or maximum amount of ppi that I need to be aware of?
Thank you !


There is a file size limit which I discovered. I don't know exactly what it is but files too large would not load when trying to play on my TV. I did a little compression and they all played. Maybe somebody knows the size limit. If not, some experimentation on your part should reveal it.

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Jul 15, 2015 12:55:33   #
Armadillo Loc: Ventura, CA
 
revhen wrote:
There is a file size limit which I discovered. I don't know exactly what it is but files too large would not load when trying to play on my TV. I did a little compression and they all played. Maybe somebody knows the size limit. If not, some experimentation on your part should reveal it.


revhen,

Just for kicks, try resizing your picture to 1024x768px and 200dpi.

That will reduce the bite size of the file and display nicely on the TV.

Michael G

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Jul 15, 2015 21:04:41   #
Ira
 
1920 x 1080 -72ppi
or
1080 x 720 -72ppi

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Jul 15, 2015 21:07:53   #
Ira
 
1080 is 1920x1080 72ppi
720 is 1080x720 72ppi

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Jul 15, 2015 21:12:13   #
revhen Loc: By the beautiful Hudson
 
Armadillo wrote:
revhen,

Just for kicks, try resizing your picture to 1024x768px and 200dpi.

That will reduce the bite size of the file and display nicely on the TV.

Michael G



did roughly that and got them to play

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Jul 15, 2015 23:06:16   #
Armadillo Loc: Ventura, CA
 
revhen wrote:
did roughly that and got them to play


Good. Now you can experiment with the dpi to further reduce the file size of the images, until they begin to degrade. I wouldn't go below 72dpi.

1024x768pixels has been a standard for projected images in camera clubs, national competitions, and PowerPoint presentations projected on a silver screen, or through common monitors.

Michael G

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Jul 15, 2015 23:07:32   #
TheDman Loc: USA
 
Armadillo wrote:
Good. Now you can experiment with the dpi to further reduce the file size of the images, until they begin to degrade. I wouldn't go below 72dpi.

1024x768pixels has been a standard for projected images in camera clubs, national competitions, and PowerPoint presentations projected on a silver screen, or through common monitors.

Michael G


Changing dpi won't reduce the size or otherwise affect the image in any way.
http://www.photoshopessentials.com/essentials/the-72-ppi-web-resolution-myth/

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Jul 15, 2015 23:23:22   #
Ira
 
Larger DPI creates larger file size.
72 dpi works great for video.
Make your image for display on an HD TV monitor 1920 x 1080.
That is the broadcast standard for 1080 HD.

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