mpxxxxx

I'm new to this program, so a basic question. I simply want to play two or more movies side by side at the same time. Here's the code I have for the same 320x240 movie playing next to itself, stretched in the vertical direction to fill a 640x480 screen. It doesn't work. Why?

multiple-movies-playing-at-once

Hi Mark, The reason this is not working, is that the second matrix 

(the one to the right), is not receiving any matrix data, nor any bangs.

If you use a 'print' beneath any objects, you can see what their 

output is. A jit.matrix object has a unique name generated for it, 

which is really a 'pointer' to the matrix data in memory, and when a 

matrix, or matrix operator process data, it sends out the name of 

this pointer. I know, it sounds weird, but you can do two things here.

1) you can simply wire the output of your movie to the second right 

most matrix (patchcoords can go to more than one place)

2) you can NAME the matrix on the right and left, say, mymovie, by 

using the @name attribute., so both matrices would be

[jit.matrix 4 char 640 480 @name mymovie]

Giving them both the same name means that they reference the same 

data. Now all you have to do is tell them to output, which means 

banging them. So you could then connect your metro to the rightmost 

On Jan 11, 2008, at 12:06 PM, Mark Palmer wrote:

> I'm new to this program, so a basic question. I simply want to play 

> two or more movies side by side at the same time. Here's the code I 

> have for the same 320x240 movie playing next to itself, stretched in 

> the vertical direction to fill a 640x480 screen. It doesn't work. Why?

> #P newex 190 294 129 196617 jit.matrix 4 char 640 480;

> #P message 541 169 248 196617 usersrcdim 1 , srcdimstart 0 0 , 

> srcdimend 320 240 , usedstdim 1 , dstdimstart 320 0 , dstdimend 

> #P message 187 167 248 196617 usersrcdim 1 , srcdimstart 0 0 , 

> srcdimend 320 240 , usedstdim 1 , dstdimstart 0 0 , dstdimend 320 

> #P user jit.pwindow 101 429 322 242 0 1 0 0 1 0;

> #P newex 31 294 129 196617 jit.matrix 4 char 640 480;

> #P window setfont "Fixedwidth Serif" 10.;

> #P newex 1 212 172 1441802 jit.qt.movie 320 240 @vol 0;

Hi Mark, The reason this is not working, is that the second matrix  
(the one to the right), is not receiving any matrix data, nor any bangs.

If you use a 'print' beneath any objects, you can see what their  
output is. A jit.matrix object has a unique name generated for it,  
which is really a 'pointer' to the matrix data in memory, and when a  
matrix, or matrix operator process data,  it sends out the name of  
this pointer. I know, it sounds weird, but you can do two things here.

1) you can simply wire the output of your movie to the second right  
most matrix (patchcoords can go to more than one place)

2) you can NAME the matrix on the right and left, say, mymovie, by  
using the @name attribute., so both matrices would be

Giving them both the same name means that they reference the same  
data. Now all you have to do is tell them to output, which means  
banging them. So you could then connect your metro to the rightmost  
matrix.

>
> I'm new to this program, so a basic question. I simply want to play  
> two or more movies side by side at the same time. Here's the code I  
> have for the same 320x240 movie playing next to itself, stretched in  
> the vertical direction to fill a 640x480 screen. It doesn't work. Why?
>
> max v2;
> #N vpatcher 122 63 1114 755;
> #P origin 47 0;
> #P window setfont "Sans Serif" 9.;
> #P window linecount 1;
> #P newex 190 294 129 196617 jit.matrix 4 char 640 480;
> #P window linecount 2;
> #P message 541 169 248 196617 usersrcdim 1 , srcdimstart 0 0 ,  
> srcdimend 320 240 , usedstdim 1 , dstdimstart 320 0 , dstdimend  
> 640 480;
> #P message 187 167 248 196617 usersrcdim 1 , srcdimstart 0 0 ,  
> srcdimend 320 240 , usedstdim 1 , dstdimstart 0 0 , dstdimend 320  
> 480;
> #P user jit.pwindow 101 429 322 242 0 1 0 0 1 0;
> #P window linecount 1;
> #P newex 31 294 129 196617 jit.matrix 4 char 640 480;
> #P newex 135 72 48 196617 loadbang;
> #P window setfont "Fixedwidth Serif" 10.;
> #P newex 1 105 55 1441802 metro 40;
> #P toggle 1 57 15 0;
> #P message 64 106 34 1441802 read;
> #P newex 1 212 172 1441802 jit.qt.movie 320 240 @vol 0;
> #B color 5;
> #P connect 2 0 3 0;
> #P connect 1 0 0 0;
> #P connect 3 0 0 0;
> #P connect 0 0 5 0;
> #P connect 7 0 5 0;
> #P connect 4 0 1 0;
> #P connect 5 0 6 0;
> #P connect 9 0 6 0;
> #P connect 4 0 7 0;
> #P connect 8 0 9 0;
> #P connect 4 0 8 0;
> #P pop;
>


a few things : there was a typo in the matrix copying message , you wrote "usersrcdim 1" instead of "usesrcdim 1" ( happens :) ),

then when combining two matrices together it is necessary to use some matrix operators to create one matrix out of two.

jit.concat would do the same thing as your patch, see example.

there are numerous ways to do what you intead to do , i recommand having a look at the openGL objects (jit.gl.videopane as a starter ) which have a little learning curve but will save you lots of CPU as most of the process goes on your graphic card . manipulating, positionning , scaling your images become much easier as well;

Quote: mpalmer wrote on Fri, 11 January 2008 18:06

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

> I'm new to this program, so a basic question. I simply want to play two or more movies side by side at the same time. Here's the code I have for the same 320x240 movie playing next to itself, stretched in the vertical direction to fill a 640x480 screen. It doesn't work. Why?

> #P message 541 169 248 196617 usersrcdim 1 , srcdimstart 0 0 , srcdimend 320 240 , usedstdim 1 , dstdimstart 320 0 , dstdimend 640 480;

> #P message 187 167 248 196617 usersrcdim 1 , srcdimstart 0 0 , srcdimend 320 240 , usedstdim 1 , dstdimstart 0 0 , dstdimend 320 480;

then when combining two matrices together it is necessary to use some matrix operators to create one matrix out of two.
jit.op is the most common one.
jit.concat would do the same thing as your patch, see example.

Quote: mpalmer wrote on Fri, 11 January 2008 18:06
----------------------------------------------------
> I'm new to this program, so a basic question. I simply want to play two or more movies side by side at the same time. Here's the code I have for the same 320x240 movie playing next to itself, stretched in the vertical direction to fill a 640x480 screen. It doesn't work. Why?
>
> max v2;
> #N vpatcher 122 63 1114 755;
> #P origin 47 0;
> #P window setfont "Sans Serif" 9.;
> #P window linecount 1;
> #P newex 190 294 129 196617 jit.matrix 4 char 640 480;
> #P window linecount 2;
> #P message 541 169 248 196617 usersrcdim 1 , srcdimstart 0 0 , srcdimend 320 240 , usedstdim 1 , dstdimstart 320 0 , dstdimend 640 480;
> #P message 187 167 248 196617 usersrcdim 1 , srcdimstart 0 0 , srcdimend 320 240 , usedstdim 1 , dstdimstart 0 0 , dstdimend 320 480;
> #P user jit.pwindow 101 429 322 242 0 1 0 0 1 0;
> #P window linecount 1;
> #P newex 31 294 129 196617 jit.matrix 4 char 640 480;
> #P newex 135 72 48 196617 loadbang;
> #P window setfont "Fixedwidth Serif" 10.;
> #P newex 1 105 55 1441802 metro 40;
> #P toggle 1 57 15 0;
> #P message 64 106 34 1441802 read;
> #P newex 1 212 172 1441802 jit.qt.movie 320 240 @vol 0;
> #B color 5;
> #P connect 2 0 3 0;
> #P connect 1 0 0 0;
> #P connect 3 0 0 0;
> #P connect 0 0 5 0;
> #P connect 7 0 5 0;
> #P connect 4 0 1 0;
> #P connect 5 0 6 0;
> #P connect 9 0 6 0;
> #P connect 4 0 7 0;
> #P connect 8 0 9 0;
> #P connect 4 0 8 0;
> #P pop;
>
----------------------------------------------------


Thanks! I did leave out that line and now it works, somewhat. It seems to be alternating frames, which means it's very strobe-y. Can that be fixed? Is there a better way to play two or more movies side by side?

Actually, I resized the output movie and it doesn't seem to work anymore. I can't resize to 1280x720 and keep both movies showing on the screen for some reason, even though they're only 320x240 each. Any idea why?

Also, a search through the documentation turns up nothing on jit.gl.videopane. Even a web search produces nil.

jit.gl.videoplane, with an l, like the thing that flies.

On Jan 11, 2008, at 8:48 PM, Mark Palmer wrote:

> Also, a search through the documentation turns up nothing on 

> jit.gl.videopane. Even a web search produces nil.

>
> Also, a search through the documentation turns up nothing on  
> jit.gl.videopane. Even a web search produces nil.
>


Okay, thanks all! I've looked over jit.gl.videoplane, and it definitely seems like the way to go.

Okay, so one thing I can't figure out with jit.gl.videoplane is how to get positioning correct within the space. For instance, let's say I want to put a 320x240 video in the upper left hand corner in a 1280x720 space. What @position #s do I use, and why? I played around with numbers at random below and finally got it to work, but they are weird #s like 0.525 that make no sense in relation to the .33x.25 scaling. It would be nice if it made more sense. Does anybody know?

multiple movies playing at once