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Why doesn't QV view some gifs and jpegs?

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Name: James
Date: July 11, 2001 at 15:03:45 Pacific
Comment:

I was told to get the program qv because 3.1 cant read gifs or jpegs, but when I bring home pictures from my internet access at the library, some are shown as wavy lines and it won't read them normally. What is this and how can I fix it?



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Response Number 1
Name: Lightspeed
Date: July 12, 2001 at 09:50:07 Pacific
Reply:


I use Qvpro 2.42 and 2.43 on my system and never encountered such problems. But since you say this happens only with some pictures, i think of 3 possible problems:

1- The pictures are too big for your memory card. Open QV and press F2. If the memory card is reported as having at least 1024k of memory (1 meg), you should be ok. Anything lower could cause problems with large pictures.

2- It could be a case of progressive Jpegs that were only partially downloaded and are incomplete.

3- Could be a floppy disk problem, and the files are corrupted.

One way to repair this is to use Graphics Workshop to read the picture (it will read almost any pictures, even with errors) and then save it again with another name.

Lightspeed's Reference Page.


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Response Number 2
Name: James
Date: July 14, 2001 at 06:23:21 Pacific
Reply:

I've tried it with th esame pics multiple times from different sites, so I assume that it is number one... Thnx.

But wait- It opens pictures that are bigger, so... yeesh...


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Response Number 3
Name: Lightspeed
Date: July 14, 2001 at 11:58:36 Pacific
Reply:


Don't be fooled by the size of the pics, some may look bigger but they aren't, just less compressed. I have reduced pictures that were 400 or 500 Ks in the past, and they ended up as 40 Ks or so. A Jpeg image compressed to the max can be 50k or so, but can have well over 1 meg of info inside. Jpegs are not only images, they are compressed to different degree, some up to 90% on even more. The problem will show up if a Jpeg has more info than your video card can handle.


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