Re: FLASH: jpeg Compression ? and Flash

[Laura Mollett]

Hi Jeff,


> Thanks Laura.  The one problem I've found with cropping images however is

> that when you compose Flash movies for the standard 550x400px

> jpeg's and gifs start to look ragged in movies output to 100% browser

> size, if the browser is bigger than your 550x400...


Well yeah, you added another layer of complexity again when you start

talking about resizing images :) Resizing rasters is just a bad idea, imo.

So you're saving your images at the right dimensions for a 21" screen and

then scaling them down in flash after you import them? Don't your images

then look bad when resized to 550x400? Downsizing can be just as bad as

upsizing. Of course, it depends on the image - photographs can handle being

resized better than images with a lot of hard lines or curves because photos

blur to some extent anyway (sort of like being anti-aliased) and text is the

worst.


As long as the image is resized proportionally and not too far in either

direction, it's not too bad - but I seldom keep my window proportional. I

grab the corner and pull it where I want it, and the images just die when

you do that (even vectors have problems with that). I know people complain

about white space if movies aren't resizeable, but you can make it a little

better by providing a background in the html page, so the space isn't

"white" (and so obviously blank :) or use a lot of vectors which resize

well. I don't know the answer for rasters. For awhile I played around with

setting just one dimension to 100% (so it would only resize proportionally)

but didn't get too much out of it in the end.


> I did notice however

> the effect is worse on a large Mac screen than on a Windows'  I am

> running Virtual PC and the resolution of the graphics seems better [jpeg

> and gifs] in Flash...


Hm, you have the window resolution set differently in virtual pc? Since

you're using the same screen, you shouldn't see a difference except in some

setting you've chosen yourself :) What counts in this case is the resolution

of the moniter. The virtual pc window thinks it's the whole of your screen,

you know. So the images are probably being resized smaller still, which may

make them look better. When you resize down, you lose detail but gain

clarity - for example the colors may brighten as the pixels are pushed

together, but it lacks details that you would be able to see in a larger

version. BTW, try out that gamma fkey postcardware if you haven't already.

The bright/dark difference is huge on any pc I've ever seen (ymmv, of

course) and has a great affect on images.


Laura


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