[swfmill] newbie: creating animation from a series of jpg files various timings
Jon Molesa
rjmolesa at consoltec.net
Mon Mar 5 13:39:42 EST 2007
I only skimmed this, but it may be useful to you. More so than my
explaination
http://www.science.uva.nl/ict/ossdocs/java/tutorial/ui/drawing/animLoop.html
It talks about an animation loop. Appears to be java or js, but that's
close enough to AS to gleen something useful maybe.
* Seth Markowitz <seth.markowitz at gmail.com> wrote:
> On 3/5/07, Jon Molesa <rjmolesa at consoltec.net> wrote:
> >
> >Nice solution to a problem. Mind if I include this in the wip
> >documentation as an example?
>
>
>
> what is the "wip" documentation? -- sure.. you can use the example in the
> doc.
>
>
> In either case, your issue isn't so much with swfmill as it is a
> >mathematical conversion from ms to fps. Is that a correct assessment?
>
>
>
> You're absolutely right. The real question here is what is a good formula
> for converting milliseconds to frames. Right now I'm doing this in my perl
> script:
>
> $fps = 15;
> $frameNum = int($millisecondTimeStamp/1000 * $fps);
>
>
>
> My first thought is to decide on a fps rate that you'd like to have.
> >Then there _could_ be total of 1000 fps with the framegrabber. A fps of
> >12 fps is a good speed for the human eye I believe?? Double check on that.
> >You'd have to figure out which block the captured frame fell into and
> >place it
> >in that frame. On a 12 second frame rate, 1 frame would contain
> >83.33ms. So you'd just have to figure out what which block the captured
> >frame fell into. swfmill frame second1-frame1~=84ms,
> >second1-frame2~=168ms... and so on.
> >It's too early to come up with a formula, but maybe later, or maybe
> >someone else can develop that. Anyway, I hope it helps and is close to
> >correct. But that's the way I see it.
> >
> >* Seth Markowitz <seth.markowitz at gmail.com> wrote:
> >
> >> Hi,
> >>
> >> I'm a newbie to swfmill, but I did get it working for my purposes... I'm
> >> just trying to figure out how to make it more efficient. Here is my
> >> situation:
> >>
> >> Here's my inventory:
> >> 1. I have 1000 jpg images taken from a vga frame grabber - NOT in frames
> >per
> >> second... the timing is variable. For example, file1.jpg was grabbed at
> >> 30ms, file2.jpg was grabbed at 400ms, file3.jpg at 410ms, an so on. The
> >time
> >> starts from Time == 0ms when the frame grabber was turned on.
> >>
> >> 2. I have an XML file called capture.xml that contains the timestamp in
> >> milliseconds for when each jpg was captured:
> >>
> >> <Capture>
> >> <FileName>Slide_0020.jpg</FileName>
> >> <SlideNumber>20</SlideNumber>
> >> <CaptureTime>64174</CaptureTime>
> >> </Capture>
> >> <Capture>
> >> <FileName>Slide_0021.jpg</FileName>
> >> <SlideNumber>21</SlideNumber>
> >> <CaptureTime>64869</CaptureTime>
> >> </Capture>
> >>
> >> So....
> >> By putting all the jpg files together into a SWF via swfmill, I should
> >have
> >> a fairly descent "flipbook" type animation. I've created a perl script
> >to
> >> parse the capture.xml file and creates a swfml file that looks like
> >this:
> >>
> >> <?xml version="1.0" encoding="iso-8859-1" ?>
> >> <movie width="640" height="480" framerate="15">
> >> <background color="#ffffff"/>
> >> <frame>
> >> <!-- frame:0 ptime:54 -->
> >> <library>
> >> <clip id="image1" import="Slide_0001_Full_resize.jpg" />
> >> </library>
> >> <place id="image1" name="myImage1" x="0" y="0" depth="1" />
> >> </frame>
> >> <frame/><frame/><frame/><frame/><frame/><frame/><frame>
> >> <!-- frame:6 ptime:408 -->
> >> <library>
> >> <clip id="image2" import="Slide_0002_Full_resize.jpg" />
> >> </library>
> >> <place id="image2" name="myImage2" x="0" y="0" depth="2" />
> >> </frame>
> >> <frame/><frame/><frame/><frame/><frame/><frame>
> >> <!-- frame:11 ptime:752 -->
> >> <library>
> >> <clip id="image3" import="Slide_0003_Full_resize.jpg" />
> >> </library>
> >> <place id="image3" name="myImage3" x="0" y="0" depth="3" />
> >> </frame>
> >>
> >> .....
> >>
> >> Right now this is klunky because I'm trying to convert the millisecond
> >> timestamp into frames per second. For example, if I want to run this
> >> animation at 10fps, I know that the jpg captured at 100ms will appear in
> >> frame 1 and so on (is that right??). So what happens in between each
> >> frame... if file1.jpg is captures at 10seconds before file2.jpg, I just
> >> stick (10x10) 100 <frame /> tags as filler in between the two
> >images. There
> >> must be a better way than this. Also, since I'm converting from
> >> milliseconds to frames per second... I think I'm losing a lot of
> >precision.
> >>
> >> How could I create this "flipbook" effect, given the inventory above
> >using
> >> swfmill simple?
> >>
> >> I think this is a pretty interesting problem and I really wanted to
> >thank
> >> the creators of swfmill... it's a great solution to this type of
> >thing. I
> >> was orginally trying to create an AVI file from this series of jpg
> >files,
> >> but it got way too complicated for me.
> >>
> >> Looking forward to some suggestions!!
> >>
> >> Seth
> >
> >> _______________________________________________
> >> swfmill mailing list
> >> swfmill at osflash.org
> >> http://osflash.org/mailman/listinfo/swfmill_osflash.org
> >
> >
> >--
> >Jon Molesa
> >rjmolesa at consoltec.net
> >
> >_______________________________________________
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> >swfmill at osflash.org
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> >
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--
Jon Molesa
Owner - Consoltec
336.844.4104
828.994.2067
866.433.0835
rjmolesa at consoltec.net
http://www.consoltec.net
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