Regressive JPEGs
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Regressive JPEGs
1–10 of 72 posts
Re: Regressive JPEGs
#2Nice! I think you can approximate timing somewhat, by making your web server create the "jpeg" on the fly and send it to the client in timed chunks. The source could even be a webcam, so the "jpeg" would go on forever.
Re: Regressive JPEGs
#3I tried to think about difficult ways to compute the high frequency coefficients to work from the "wrong" coefficients of the first image...
But this is clever - just smash them together. Low frequency of one image concatenated with high frequency from another. This works surprisingly well!
Re: Regressive JPEGs
#4Excellent hack! Should definitely be possible to make an animated gif to jpeg converter. I guess the animation could be slowed a little by repeating frames.
Re: Regressive JPEGs
#5Excellent hack! Should definitely be possible to make an animated gif to jpeg converter. I guess the animation could be slowed a little by repeating frames.
You can also deliberately have the server sending data at the right rate for the right playback time.
Easy enough to add a delay() each frame if your server is python/nodejs/PHP/whatever
Re: Regressive JPEGs
#6Nice! I think you can approximate timing somewhat, by making your web server create the "jpeg" on the fly and send it to the client in timed chunks. The source could even be a webcam, so the "jpeg" would go on forever.
There are already webcams which do this- but they use a mime trick for 'multipart/x-mixed-replace'.
That's basically the server telling the client 'That data I just sent you, well now replace it with this new thing'.
No JavaScript needed, and can work with plain http and jpeg
Re: Regressive JPEGs
#7That is 1. Cursed, and 2. Definitely in the right place here.
Re: Regressive JPEGs
#8My jaw dropped. Very cool. Thanks for sharing.
Re: Regressive JPEGs
#9hmm interesting
Re: Regressive JPEGs
#10Safari just freezes in place until the image is entirely finished downloading.