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Ed Selby

I got an issue when capturing UHD video via a Blackmagic PCIe card using the device

The captured image is fine when using @output_texture 0 but it is half the width with artifacts when using @output_texture 1. See the screenshot attached.

Is there a solution to get the full width resolution for @output_texture 1 ?

are working in terms of texture resolution.

By the way, DeckLink Quad HDMI Recorder [Native]/ @output_texture 1 is the only setting where I am able to achieve 60fps as mentioned here:

https://cycling74.com/forums/video-capture-uhd60fps

Update: It does happen with FHD input source even worse, see attached screenshots

output_texture.png

output_texture_1920x1080.png

 Windows 10 / Max 8.1.4 GL3 

I got an issue when capturing UHD video via a Blackmagic  PCIe card using the device
- DeckLink Quad HDMI Recorder [Native]
The captured image is fine when using @output_texture 0 but it is half the width with artifacts when using  @output_texture 1. See the screenshot attached.
Is there a solution to get the full width resolution for  @output_texture 1 ?

The other Blackmagic devices
- Blackmagic WDM Capture
- Decklink Video Capture 
are working in terms of texture resolution.

By the way,  DeckLink Quad HDMI Recorder [Native]/ @output_texture 1   is the only setting where I am able to achieve 60fps as mentioned here:
https://cycling74.com/forums/video-capture-uhd60fps

 Windows 10 / Max 8.1.4 GL3 

I got an issue when capturing UHD video via a Blackmagic  PCIe card using the device
- DeckLink Quad HDMI Reco

blackmagic-native-video-capture-issue-when-using-output_texture-1

Blackmagic Native video capture issue when using @output_texture 1

Gary Leyrn

Hello , is there a way to translate this patch into jit.gen ?

I need to fill specific cells with specific values, and I wonder if it is possible to do it inside jit.gen, like for example, to do what is explained in this tutorial using jit.gen ? 

https://docs.cycling74.com/max8/tutorials/05-Jitter%20Matrix%201

Hello , is there a way to translate this patch into jit.gen ? 

I need to fill specific cells with specific values, and I wonder if it is possible to do it inside jit.gen, like for example, to do what is explained in this tutorial using jit.gen ? 
https://docs.cycling74.com/max8/tutorials/05-Jitter%20Matrix%201

Hello , is there a way to translate this patch into jit.gen ? 
I need to fill specific cells with specific values, and I wonder if it is pos

setcell-and-setall-in-jit-gen

just put a jit.matrix object right before the jit.gen inlet and call the messages on that. you could come up with some complicate logic using gen parameters, but it depends on your situation which is more viable

 setcell and setall in jit.gen

Oni Shogun

I am running a patch that hosts 60 jit.phys.bodies with the following initial attributes:

jit.phys.body @mass 0 @force 0 0 0 @restitution 0 @scale 0.02 @filterclass other @filters other @collisions 1

anyhow, the jit.phys.body outputs the collisions-dictionary, though for some reason 

… when obvious collisions occur, these are sometimes not reported.

Does this happen inbetween frames and is thus ignored? Any help would be fantastic.

That being said, I have decided against jit.phys.multiple for several reasons, mainly because I can handle bodies and their collisions individually without parsing the entire collisions-dictionary and the 

 method does not work as expected, or at least I am unable to understand the exact message body required… I have left Rob Ramirez without a reply in the 

 so far because I even have difficulties setting up a patch that highlights the problem comprehensively.

It will be difficult also to share a patch here since it involves poly~ and numerous other stuff which could cause the problem. Would just like to know if anyone has a fraction of an answer to this.

Hey phys.nerds,

I am running a patch that hosts 60 jit.phys.bodies with the following initial attributes:

jit.phys.body @mass 0 @force 0...

jitphysbody-does-not-report-all-collisions

jit.phys.body does not report all collisions

Gussi

I was just wondering why there is no support for bitwise  operators when writing expressions with jit.expr or inside jit.gen?

You can work around this with arithmetic, but it can get tedious real fast, especially when considering the normalization behavior of jit.expr and jit.gen (more on this later).

Say you want to do bit-packing with jit.matrices. we can easily do this with normal jit.op objects like, jit.&, jit.|, jit.^, jit.~, jit.<<, jit.>>

While the jit.expr reference states: "The expression can contain any operator available from within 

" -  this just doesn't seem to be the case, not sure if I've missed something? Or if it uses different syntax? Can't find anything in the documentation regardless.

Now regarding the normalization behavior of these objects, it would be nice to be able to turn this off, if possible, for instance when you are working with char matrices.

I want to store variable "A" as 1bit int, and variable "B" as 7bit int, within the 8bit char matrix "C".

This is trivial enough with max objects, or jit.op, but when doing it with jit.expr or jit.gen, we first have to use arithmetic which should be less efficient than bitwise? We also have to counter their normalization like so:

- wont work, since char matrices passed have values normalized to 0. - 1. internally  in jit.expr

- sort of works but now precision is off, unless we set the jit.expr object to float64 (more memory overhead for larger matrices)

finally this works, and hence my (hopefully polite) complaint about the tediousness of these objects :-)

- ie multiplying char matrices by 255, then doing integer arithmetic, then dividing by 255 again before output, since jit.expr likes to do its own scaling already.

hopefully I'm not the only one who would like to see the introduction of bitwise operators in these cases.

I was just wondering why there is no support for bitwise  operators when writing expressions with jit.expr or inside jit.gen?

You can work...

feature-request-for-adding-bitwise-operators-in-jitgen-and-jitexpr

feature request for adding bitwise operators in jit.gen and jit.expr

Felix Pastor

Can shutting down the projector connected to Mac running Max/Jitter via HDMI cause Max to freeze?

I'm trying to figure out why my Max patch stropped responding during a performance. The patch uses Mubu (not in a very computation intensive way) and Jitter (very simple: two clips - texture outputs - that are crossfaded). There are 3 audio inputs to Max, 6 channels routed to Live (Blackhole 16) and stereo pair out with a Scarlett.

I've been running this patch for the past two weeks with no issues at all during rehearsals even under stress (triggering commands like a monkey, leaving it on for a couple of hours, etc). The only difference is I wasn't using an external monitor or projector.

At the show I was projecting via HDMI and everything worked flawlessly for the sound check, dress rehearsal and even a final quick run-through of the entire program. However, during the show, at the start of my piece, the video was jumpy, slowly got worse, and eventually the entire patch stopped responding (or responded to some things and not others). The audio also got worse but Live responded. I even shut of the DSP in Max and turned it back on to see if that liberated something.

I've run through my patch looking for mistakes or memory traps or...Help please!

Max/Jitter problems after projector failure

maxjitter-problems-after-projector-failure

Cunning Jester

I am experiencing inexplicable behaviour of gl-objects when mixing various textures as simple jit.gl.videoplanes in poly~. The jit.gl.node they all draw to captures the textures randomly and mostly not at all; most noticeably it draws a black texture as soon as the poly~-patchers are closed (which is of course their default state), the textures themselves appear black too along the way. Even other sub patchers along the cascade of further FX sometimes need to be opened to see anything further down the line. It is in fact hard to explain and sharing the patch is far from useful since it contains too many dependencies. perhaps my macMini's performance is reaching its limit although the framerate is constant and smooth. 

This behavior, however, is not linked to any [active] object in the patches nor are there any conflicting layers which overwrite the visible content. By simply closing respective sub patchers with the videoplanes the bug (?) is easily reproduced here in this setup. Any ideas? Anyone?

It is actually quite urgent for me to find a solution.

I am running the latest Max version and am on macOS Sonoma (14.2).

HELLP! jit.gl.node stops capturing when sub patchers are not visible

hellp-jitglnode-stops-capturing-when-sub-patchers-are-not-visible

Hi everyone! I'm opening this thread in case any of you have questions, doubts, suggestions, etc, related to the Vsynth Package.

Remember I'm uploading info, screenshots, videos here:

Hi everyone! I'm opening this thread in case any of you have questions, doubts, suggestions, etc, related to the Vsynth Package.
Remember I'm uploading  info, screenshots, videos here: https://www.facebook.com/vsynth74/
https://www.instagram.com/vsynth74/
https://www.patreon.com/vsynth

Cheers!

Jitter Forum