Hello together, I’ve recently started using the video functions of processing for a uni project. Sadly I seem to run into the mentioned error on all maschines I’m working on. Even with the most basic version on the playback always get the error “JNA: could not detach thread” eventually crashing t…

Hi, it seems strange to me but it looks like i have it figured out now, maybe it was my error for not understanding the way the Videolibraray works, or its a strange problem. The following seems to generate a proper videostream with the correct framecount, in playbackrates up to 6x, without getti…

Ok, I tried and checked some things. It seems like the " void movieEvent(Movie m) " function is causing the problem. I did not check it before, and when i handle all the updates in void draw(), with the movie.available() funtion, it’s working. So for now its working well.

Hi there, Thank you so much for the solution. I have a sketch that uses a video as input, reads the brightness from the video.pixels[location], then draws many 3D spheres using the x, y coordinates. It is based on the Brightness Mirror example from Learning Processing" by Daniel Shiffman. for some…

Hi :slight_smile: Movie speed related issues are very common when recording video. I should write about it and make it very visible in the video export library page :slight_smile: In your program, is it important that the timing looks correct while running the program and also in the produced video…

[image] Gus_Fermin: I have found your solution here, and had also found this solution by @GoToLoop https://forum.processing.org/two/discussion/14990/movie-begin-and-end-events.html#Item_1 I’ve remade that old sketch as a new subclass so it works to the current video library: [i…

[image] hamoid: Hi :slight_smile: Movie speed related issues are very common when recording video. I should write about it and make it very visible in the video export library page :slight_smile: Hi Sir You are giving this community nice taste

Hola Abe :slight_smile: Thank you for all your tutorials and things you share to help others learn. You have a big fan in the Dominican Republic. [image] hamoid: Hi :slight_smile: Movie speed related issues are very common when recording video. I should write about it and make it very visible…

Thank you very much GoToLoop, I tried to implement it, and I was able to change the frameRate on your provided example… but when I tried to implement it in the code above ( in Abe’s reply) it did not work, Or I was unable to make it work. Saved it in my library to try and implement it better.

Hi hi :slight_smile: It’s a long post and no much time to reply in detail right now, but by looking at the code I think I know what may be happening. You are loading and playing a video. The duration of that video will be whatever it says in the file. If it is 8 seconds long, then that’s how long…

Hola Abe, [image] hamoid: It’s a long post I apologize for this, just wanted to share my trial and error process in this. [image] hamoid: Does that match what you are seeing? Yes that is exactly the behavior that I am seeing. [image] hamoid: Since you are processing an input vid…

[image] Gus_Fermin: with the amount of time the function needs to process each frame Mmm… I don’t see how the time has an effect. The following is untested. But I think very few changes are needed in your program. // MAIN SKETCH import processing.video.*; import com.hamoid.*; final Str…

Video Crashes with JNA: could not detach thread

Processing Libraries

GoToLoop October 20, 2022, 5:31pm 6

I’ve remade that old sketch as a new subclass so it works to the current video library:

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Video Crashes with JNA: could not detach thread

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