Thanks, If I do that it works, but weight goes from 560Kbs to 7Mbs!!! I can't do that :(
On 10/10/06, David Buff <[EMAIL PROTECTED]> wrote:
Hello again Another way: When you import your video, when you are on the "Encoding" page, select "Show Advanced Settings", then "Key frame placement" to "custom", and write "1" in "Key frame Interval". So each frame will be a key frame, and each frame will be all described. But your swf will be more eavy. I have no time to try it, may be it works... David Buff ----- Original Message ----- From: "David Buff" <[EMAIL PROTECTED]> To: "Flashcoders mailing list" <flashcoders@chattyfig.figleaf.com> Sent: Tuesday, October 10, 2006 10:48 AM Subject: Re: [Flashcoders] Playing video backwards kills my CPU sorry for my bad english... There is two kinds of movie codec for the compression, first using spacial compression only (like mjpeg...), and second using spatial compression in association with key frame (like mpeg, sorenson...). The key frame describe the entire picture only once each 15 frames or 8 frames for exemple. The other frames describe only what has changed in the picture, with a threshold. It describe for exemple only the arm of a people who's moving, but not the background witch do not move. So when you want to read a movie forward, the codec read the key frame witch is the reference to fill the "holes" not described in the other frames. Each 15 frames, a new key frame describe the entire picture (so also the background) and define a new reference for the next frames. The problem is that when you want to play backward, like frame-1, the CPU need to go 15 frames before to find the previous key frame, load the entire description of the picture, and build frame by frame, fill the different holes of each frames, to be able to display the frame you want. If you are lucky, your index (frame-1) is the index of a key frame. Then the CPU work quickly. But if you are not lucky, your index is (key frame - 14), then the CPU need to rebuild 14 frames to be able to display the one you want. There is no solution to your problem, because Flash don't offer the possibility to use a "only spatial" codec compression. And this kind of compression take a lot of Mo because all frames are described. I thaught to an alternative but never tried it, you can try to draw each frame of your movie in so many BitmapData you need. It will take a lot of memory space, and a preload time, but after that, you index the BitmapData you need, and it will work faster. I don't know if it is possible to draw a .mov frame in a BitmapData. If it's possible, tell us. David Buff ----- Original Message ----- From: "Ricardo Sánchez" <[EMAIL PROTECTED]> To: "Flashcoders mailing list" <flashcoders@chattyfig.figleaf.com> Sent: Tuesday, October 10, 2006 10:07 AM Subject: [Flashcoders] Playing video backwards kills my CPU >I have a .mov embebbed in the timeline as a movieclip. I have setted a stop > to it so I play it with a codeline like this video.gotoAndStop > (video._currentframe+1); > > It works perfectly, my problem comes when I want to play it backwards, I > follow a similar procedure doing: > video.gotoAndStop(video._currentframe-1); > > It seems to work but it kills my CPU making everyother thing in the site > not > working and making the video running slowlier. When I go back to fordward > playing everything goes back to normality. > > Any clues? Do I have to look for some flaws in my code or is there > something > wrong with embbebed video? > > Thanks > _______________________________________________ > Flashcoders@chattyfig.figleaf.com > To change your subscription options or search the archive: > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > Brought to you by Fig Leaf Software > Premier Authorized Adobe Consulting and Training > http://www.figleaf.com > http://training.figleaf.com > _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
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