Howdy, Stranger!
We are about to switch to a new forum software. Until then we have removed the registration on this forum.
Categories
- All Categories 25.7K
- Announcements & Guidelines 13
- Common Questions 30
- Using Processing 22.1K
- Programming Questions 12.2K
- Questions about Code 6.4K
- How To... 4.2K
- Hello Processing 72
- GLSL / Shaders 292
- Library Questions 4K
- Hardware, Integration & Other Languages 2.7K
- Kinect 668
- Arduino 1K
- Raspberry PI 188
- Questions about Modes 2K
- Android Mode 1.3K
- JavaScript Mode 413
- Python Mode 205
- Questions about Tools 100
- Espanol 5
- Developing Processing 548
- Create & Announce Libraries 211
- Create & Announce Modes 19
- Create & Announce Tools 29
- Summer of Code 2018 93
- Rails Girls Summer of Code 2017 3
- Summer of Code 2017 49
- Summer of Code 2016 4
- Summer of Code 2015 40
- Summer of Code 2014 22
- p5.js 1.6K
- p5.js Programming Questions 947
- p5.js Library Questions 315
- p5.js Development Questions 31
- General 1.4K
- Events & Opportunities 288
- General Discussion 365
P5JS: saveFrames, callback?
I have a sketch that I'd like to capture to video. I'm using linux and have tried a couple of screencapture programs to record my sketch in action, but the quality is quite poor. I see in the p5js reference there's a function call [saveFrames()](http://p5js.org/reference/#/p5/saveFrames).
I need to record at high resolution and high frame rate. I'll be saving thousands of frames. It's clear the dumping them to the browser one at a time and downloading them is not an option. The reference page for saveFrames() mentions an optional "callback" argument that seems to suggest a way to transmit the saved frames to a server in bulk. However, there is no further explanation of how to do that, nor am I able to find an example out in the wild. I'm a relatively sophistocated user with control over a number of linux servers. If someone could point me in the right direction, I'm sure I could figure out the rest. Thanks,
Albert
Answers
Callback is just a nick for a function which is called back when the task is finally completed.
That completed "task" object is passed on as callback's parameter too.
Dealing w/ back-end server communication is advanced topic and beyond p5.js target audience. :o3
Any suggestions for doing a high quality capture of a p5js sketch in action?
Sorry got none. My JS skills, especially related to servers, are still very poor. X_X
See my post here...
No idea how well p5js will handle doing this with thousands of frames however: your best bet is probably to be running everything on a local server so network bottlenecks are kept to a minimum. You'll also have to batch the frames passed to the callback to avoid hitting memory limits - no idea if that might also require explicitly pausing you sketch whilst the callback completes; or whether it will block anyway: as you have discovered, documentation of this feature is somewhat limited :/