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RE: [Swftools-common] Need MX compression help

From: David Smith
Subject: RE: [Swftools-common] Need MX compression help
Date: Sat, 18 Dec 2004 14:19:36 -0800

A couple of items:

1. Some MX compressed SWF files created using jpg2swf come out all black
when viewed in Flash Player 6 or 7 (in either Mozilla or IE.) This
occurs when the JPGs I'm using have height or width that is not a
multiple of 16. Example:

http://www.zweismith.com/fun/good.swf (WIDTH=448 HEIGHT=336)
http://www.zweismith.com/fun/no_good.swf (WIDTH=447 HEIGHT=305)

Any ideas? (besides cropping/resizing my source images)

2. I'm trying to compile the latest dev version of swftools but am
unable. It looks like it's missing "swfrender.c"...

$ ./configure
$ make
making all in m4...
cd m4;make all
make[1]: Entering directory
make[1]: Leaving directory
making all in lib...
cd lib;make all
make[1]: Entering directory
make[1]: *** No rule to make target `modules/swfrender.c', needed by
`rfxswf.o'.  Stop.
make[1]: Leaving directory
make: *** [all] Error 2

Thanks again for the great software and your help.


-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Matthias Kramm
Sent: Sunday, December 12, 2004 5:10 AM
To: address@hidden
Subject: Re: [Swftools-common] Need MX compression help

On Tue, Dec 07, 2004 at 09:29:34PM -0800, David Smith wrote:
> jpeg2swf -m -q 90 -r 10 -o test.swf *.jpg
> The resulting .swf file looks good initially, but as it plays, green
> patches start to appear in certain areas that remain relatively

It should be gone now in the lastest version.

It seems there was a slight difference between the Flash H.263
and the avi2swf/jpeg2swf H.263 DCT, which allows these small
Y-differences to creep in. (in YUV, (0,0,0) is green, so the
patches where an incorrect Y-value is added appear as green)
I increased the number of keyframes that jpeg2swf generates
that the errors doesn't multiply over such large intervals,
which seems to work for now.



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