akee-rf

i'm trying to recreate that compression error that we can see on divx especially with VLC with you are seeking or when you re doing a preview a movie you are downloading before the download is done..

(the image freeze or partialy freeze and it looks like the animation is still running on the back changing the actuall image .. kind of morphing stuff..)

if somebody have an idea of where to start...

Hi there,
i'm trying to recreate that compression error that we can see on divx especially with VLC with you are seeking or when you re doing a preview a movie you are downloading before the download is done..
(the image freeze or partialy freeze and it looks like the animation is still running on the back changing the actuall image .. kind of morphing stuff..)

recreate-divx-compression-error

i tried that once. even asked that same question in doom9 and got some scary

you can try to do a 2pass encoding and before the second pass fiddle with

the numbers in the first pass generated txt file. thats kinda funky but not

ye, that effect is great and i love it when it happens.

when i think about it it can be done in jitter with cv.jit pixel flow

> i'm trying to recreate that compression error that we can see on divx

> especially with VLC with you are seeking or when you re doing a preview a

> movie you are downloading before the download is done..

> (the image freeze or partialy freeze and it looks like the animation is

> still running on the back changing the actuall image .. kind of morphing

> if somebody have an idea of where to start...

i tried that once. even asked that same question in doom9 and got some scary
looks.
you can try to do a 2pass encoding and before the second pass fiddle with
the numbers in the first pass generated txt file. thats kinda funky but not
that predictable.
ye, that effect is great and i love it when it happens.
when i think about it it can be done in jitter with cv.jit pixel flow
tracker and some op.

>
> Hi there,
> i'm trying to recreate that compression error that we can see on divx
> especially with VLC with you are seeking or when you re doing a preview a
> movie you are downloading before the download is done..
> (the image freeze or partialy freeze and it looks like the animation is
> still running on the back changing the actuall image .. kind of morphing
> stuff..)
>
> if somebody have an idea of where to start...
>
> thanks a lot
>
> freeka
>

cv.jit pixel flow tracker ?? what do you mean??

you re talking about the cv.jit.tracker????

hey thanks for your reply!
cv.jit pixel flow tracker ?? what do you mean??

The issue here is that jitter gives you the decoded pixels, whereas 

the 'image processing' happens during the decoding stage within the 

divx codec itself, which is somewhat out of jitters realm, so you 

would have to do 'glitch alike', and reverse engineer the look with 

Ive often fantasized about a set of jitter objects that let you:

1) read raw data off disk and pass a matrix through somehow

2) munge its binary data with jit.op whatevers before:

3) passing this raw encoded binary matrix to various different 

jit.decode.jpeg, jit.decode.png etc software decoders, or perhaps 

automatic objects that wrap around installed qt components

thus you might have just a new jit.encode and jit.decode, which would 

perhaps take in a binary stream, and output a 4 char matrix of size 

determined by the binary stream, and with jit.encode you would have a 

4 char matrix whatever dim producing a jit.encoded binary stream output.

You could then do things super easily like finding harmonics in video 

encoders by feeding back the output of the jpeg decoder to the jpeg 

encoder with a jit.xfade for feedback... live!

On Jan 21, 2008, at 10:40 AM, yair reshef wrote:

> i tried that once. even asked that same question in doom9 and got 

> you can try to do a 2pass encoding and before the second pass fiddle 

> with the numbers in the first pass generated txt file. thats kinda 

> ye, that effect is great and i love it when it happens.

> when i think about it it can be done in jitter with cv.jit pixel 

> On Jan 21, 2008 5:13 PM, freeka < freeka.freeka@gmail.com> wrote:

> i'm trying to recreate that compression error that we can see on 

> divx especially with VLC with you are seeking or when you re doing a 

> preview a movie you are downloading before the download is done..

> (the image freeze or partialy freeze and it looks like the animation 

> is still running on the back changing the actuall image .. kind of 

The issue here is that jitter gives you the decoded pixels, whereas  
the 'image processing' happens during the decoding stage within the  
divx codec itself, which is somewhat out of jitters realm, so you  
would have to do 'glitch alike', and reverse engineer the look with  
expensive pixel operations.

1) read raw data off disk and pass a matrix through somehow
2) munge its binary data with jit.op whatevers before:
3) passing this raw encoded binary matrix to various different  
jit.decode.jpeg, jit.decode.png etc software decoders, or perhaps  
automatic objects that wrap around installed qt components

thus you might have just a new jit.encode and jit.decode, which would  
perhaps take in a binary stream, and output a 4 char matrix of size  
determined by the binary stream, and with jit.encode you would have a  
4 char matrix whatever dim producing a jit.encoded binary stream output.

You could then do things super easily like finding harmonics in video  
encoders by feeding back the output of the jpeg decoder to the jpeg  
encoder with a jit.xfade for feedback... live!

> i tried that once. even asked that same question in doom9 and got  
> some scary looks.
> you can try to do a 2pass encoding and before the second pass fiddle  
> with the numbers in the first pass generated txt file. thats kinda  
> funky but not that predictable.
> ye, that effect is great and i love it when it happens.
> when i think about it it can be done in jitter with cv.jit pixel  
> flow tracker and some op.
>
> On Jan 21, 2008 5:13 PM, freeka < freeka.freeka@gmail.com> wrote:
>
> Hi there,
> i'm trying to recreate that compression error that we can see on  
> divx especially with VLC with you are seeking or when you re doing a  
> preview a movie you are downloading before the download is done..
> (the image freeze or partialy freeze and it looks like the animation  
> is still running on the back changing the actuall image .. kind of  
> morphing stuff..)
>
> if somebody have an idea of where to start...
>
> thanks a lot
>
> freeka
>


but until we get that we can lick our bones :D

word!
but until we get that we can lick our bones :D


hum i had a look on the jitter recipe book

40.scenewarp... which is actually a good start i think do you think 

i dunno about the jit.gl stuff.. but do you think its possible to put a second video on the back to substitute the white screen that appear when we start the deformation? Puting the same video but without the deformation will be great!

hum i had a look on the jitter recipe book
40.scenewarp... which is actually a good start i think do you think 
i dunno about the jit.gl stuff.. but do you think its possible to put a second video on the back to substitute the white screen that appear when we start the deformation? Puting the same video but without the deformation will be great!


The Debris recipe does a passable job of collecting bits of pixel trash 

in real-time, if that is what you are looking for. Trying to mimic an 

aesthetic or effect is a great learning exercise, and you often come up 

with great ideas in the process, even if it doesn't end up looking just 

The Debris recipe does a passable job of collecting bits of pixel trash 
in real-time, if that is what you are looking for.  Trying to mimic an 
aesthetic or effect is a great learning exercise, and you often come up 
with great ideas in the process, even if it doesn't end up looking just 
right.  Let us know what you come up with

Here's my clumsy tryout of 'divx' effect recreation, I think it's the 

same idea Yair mentioned - cv.jit.hsflow+jit.repos.

It's quite heavy&dirty since this is one of those train patches('make 

Here's my clumsy tryout of 'divx' effect recreation, I think it's the  
same idea Yair mentioned - cv.jit.hsflow+jit.repos.
It's quite heavy&dirty since this is one of those train patches('make  
it clean' vs 'end up in Dordrecht').

i recently experienced *amazing* compression errors by simply 

exporting a video via [jit.qt.record] using the "sorenson" codec.

it actually outperforms divx in terms of glitch aesthetic.

i'm trying to recreate that compression error that we can see on divx 

i recently experienced *amazing* compression errors by simply 
exporting a video via [jit.qt.record] using the "sorenson" codec.

>Hi there,
i'm trying to recreate that compression error that we can see on divx 
especially with VLC


> i'm trying to recreate that compression error that we can see on divx especially with VLC with you are seeking or when you re doing a preview a movie you are downloading before the download is done..

> (the image freeze or partialy freeze and it looks like the animation is still running on the back changing the actuall image .. kind of morphing stuff..)

haha, I have been sooooo wondering about that thing since getting into 

Jitter. As an aside, I wonder if people are documenting those kinds of 

errors online, or even deliberately creating them?

The weirdest error I ever saw was in a movie where the main character 

walked around with a fragment of old video plastered across his face, 

freeka skrev:
> Hi there,
> i'm trying to recreate that compression error that we can see on divx especially with VLC with you are seeking or when you re doing a preview a movie you are downloading before the download is done..
> (the image freeze or partialy freeze and it looks like the animation is still running on the back changing the actuall image .. kind of morphing stuff..)
>
haha, I have been sooooo wondering about that thing since getting into 
Jitter. As an aside, I wonder if people are documenting those kinds of 
errors online, or even deliberately creating them?

The weirdest error I ever saw was in a movie where the main character 
walked around with a fragment of old video plastered across his face, 
wrapped to conform to his face - FREAKY!


i think benjamin's on this list as well ..

On 22 jan 2008, at 16:47, Andreas Wetterberg wrote:

> haha, I have been sooooo wondering about that thing since getting 

> into Jitter. As an aside, I wonder if people are documenting those 

> kinds of errors online, or even deliberately creating them?

> The weirdest error I ever saw was in a movie where the main 

> character walked around with a fragment of old video plastered 

> across his face, wrapped to conform to his face - FREAKY!

> haha, I have been sooooo wondering about that thing since getting  
> into Jitter. As an aside, I wonder if people are documenting those  
> kinds of errors online, or even deliberately creating them?
>
> The weirdest error I ever saw was in a movie where the main  
> character walked around with a fragment of old video plastered  
> across his face, wrapped to conform to his face - FREAKY!


On 22 jan 2008, at 18:21, Gideon Kiers wrote:

> i think benjamin's on this list as well ..

> check : http://www.corrupt.ie/
>
> i think benjamin's on this list as well ..


thanks for your patch!! the movement and animation on the pixel are really good, do you think there is a way to remove this grain stuff 

what i'm looking for is that sort of wave/deformation around the movement you get on your patch..

Hey Nesa
thanks for your patch!! the movement and animation on the pixel are really good, do you think there is a way to remove this grain stuff 
to more the original file ??
what i'm looking for is that sort of wave/deformation around the movement you get on your patch..

> thanks for your patch!! the movement and animation on the pixel are really

> good, do you think there is a way to remove this grain stuff

> what i'm looking for is that sort of wave/deformation around the movement

>
> Hey Nesa
> thanks for your patch!! the movement and animation on the pixel are really
> good, do you think there is a way to remove this grain stuff
> to more the original file ??
> what i'm looking for is that sort of wave/deformation around the movement
> you get on your patch..
>
> thanks all the guys who are in touch!
>
>
>

On Jan 22, 2008, at 6:33 PM, freeka wrote:

instead of using jit.noise, you can occasionally send the original 

add some feedback in the mix, and it's even tastier:

> this grain stuff
> to more the original file ??

instead of using jit.noise, you can occasionally send the original  
movie matrix...
add some feedback in the mix, and it's even tastier:

when you perform the destruction,if i understood well, the patch decompose the screen into several square area and move them using the hsflow as reference right?

it will be perfect to have different square area size, more random size as the real divx error, maybe grouping the area by color or something, but maybe really hard to do..

Adding an alphabend between the wet signal and the raw signal at the end is good to eliminate the black zone coming with the derformation..

Hey Nesa,
your patch is really great, 
i think it need now just a lil thing:
when you perform the destruction,if i understood well, the patch  decompose the screen into several square area and move them using the hsflow as reference right?
it will be perfect to have different square area size, more random size as the real divx error, maybe grouping the area by color or something, but maybe really hard to do..
if you have any idea? 

kind of funny to read that post again 4 year after Ö

Did you find any new ways to play around with 'decoding' effects? I worked with the vipr external and used different compression settings. This way you can creat some nice effects... but I'm looking for other possibilities and I'm very curious on what you came up with!

Did you find any new ways to play around with 'decoding' effects? I worked with the vipr external and used different compression settings. This way you can creat some nice effects... but I'm looking for other possibilities and I'm very curious on what you came up with!
Greetings & thanks for suggestions

recreate divx compression error