adamsynnott

I used jitter for the first time with a projector the other day and to my suprise all my video was awfully pixelated. I tried upping the resolution in jit.qt.movie using only raw dv footage but the result was largely the same.

I used a jit.qt.movie object then attached it to a floating jitter window and the made it fullscreen. Is there a better more efficient way of acheiving fullscreen displays in jitter with little or no pixelation?

Hi,
I used jitter for the first time with a projector the other day and to my suprise all my video was awfully pixelated. I tried upping the resolution in jit.qt.movie using only raw dv footage but the result was largely the same.

pixelation-in-jitter

without knowing anything more of your patch (or your level of 

experience with jitter) i'd suggest checking whether the dimensions 

On Jan 25, 2007, at 11:58 , adam synnott wrote:

> I used jitter for the first time with a projector the other day and 

> to my suprise all my video was awfully pixelated. I tried upping 

> the resolution in jit.qt.movie using only raw dv footage but the 

> I used a jit.qt.movie object then attached it to a floating jitter 

> window and the made it fullscreen. Is there a better more efficient 

> way of acheiving fullscreen displays in jitter with little or no 

-------------------------------------------

"Politicians should read science fiction,

without knowing anything more of your patch (or your level of  
experience with jitter)  i'd suggest checking whether the dimensions  
of all your jitter objects are correct..

>
> Hi,
> I used jitter for the first time with a projector the other day and  
> to my suprise all my video was awfully pixelated. I tried upping  
> the resolution in jit.qt.movie using only raw dv footage but the  
> result was largely the same.
>
> I used a jit.qt.movie object then attached it to a floating jitter  
> window and the made it fullscreen. Is there a better more efficient  
> way of acheiving fullscreen displays in jitter with little or no  
> pixelation?
>
> cheers,
> adam

                               Joost Rekveld
-----------    http://www.lumen.nu/rekveld

"Politicians should read science fiction,
not westerns and detective stories."
(Arthur C. Clarke)

On Jan 25, 2007, at 2:58 AM, adam synnott wrote:

Needs to set the highquality flag for DV footage (either in 

QTPlayerPro and save the file, or in Jitter). In the forthcoming 

> I used jitter for the first time with a projector the other day and  
> to my suprise all my video was awfully pixelated. I tried upping  
> the resolution in jit.qt.movie using only raw dv footage but the  
> result was largely the same.

Needs to set the highquality flag for DV footage (either in  
QTPlayerPro and save the file, or in Jitter). In the forthcoming  
1.6.3, this is now on by default.

> I used a jit.qt.movie object then attached it to a floating jitter  
> window and the made it fullscreen. Is there a better more efficient  
> way of acheiving fullscreen displays in jitter with little or no  
> pixelation?

is there a more efficient interp object who can makes a blurry effect?

This came up on the list recently -- search for recent posts by Joshua Kit Clayton in which he described how to do this with a shader. I'd send a link but I'm mobile at the moment.

This came up on the list recently -- search for recent posts by Joshua Kit Clayton in which he described how to do this with a shader.  I'd send a link but I'm mobile at the moment.

thanks. I try to use the fire effect with jit.qt.effect but there is a lot of pixelation even if i use interp.

The object appears to be doing the right thing - the effect is 

generated to match the size of the matrix coming in. So, sending a 

[ jit.matrix 4 char 640 480 ] to jit.qt.effect yields a 640x480 fire- 

effected matrix, as expected. That QuickTime's fire effect is not 

particularly beautiful is another story, but it's not exhibiting any 

> thanks. I try to use the fire effect with jit.qt.effect but there 

> is a lot of pixelation even if i use interp.

The object appears to be doing the right thing - the effect is  
generated to match the size of the matrix coming in. So, sending a  
[ jit.matrix 4 char 640 480 ] to jit.qt.effect yields a 640x480 fire- 
effected matrix, as expected. That QuickTime's fire effect is not  
particularly beautiful is another story, but it's not exhibiting any  
unexpected pixelization.

> thanks. I try to use the fire effect with jit.qt.effect but there  
> is a lot of pixelation even if i use interp.


thanks i'll try to do that. I also heard about the jit.fastblur who can remove the pixelation.

I just had a similar issue: I had a [jit.window] attached to [jit.qt.movie] reading a quicktime file that was using dv codec. The quicktime was very pixelated especially when fullscreen.

I just re-exported my footage using Photo-JPEG codec via Quicktiime Pro 7.1.3 and added a @interp 1 message to [jit.window]. The pixelation seems to have greatly improved on my computer screen. I have yet to test it on a projector or larger monitor.

I just had a similar issue: I had a [jit.window] attached to [jit.qt.movie] reading a quicktime file that was using dv codec.  The quicktime was very pixelated especially when fullscreen.  

I just re-exported my footage using Photo-JPEG codec via Quicktiime Pro 7.1.3 and added a @interp 1 message to [jit.window].  The pixelation seems to have greatly improved on my computer screen.  I have yet to test it on a projector or larger monitor.  

Pixelation in jitter