![]() This will make it easier for them to track their input and output better. I also want to show what people have typed so far. I’m thinking of doing an animation for each letter to sort of have a karaoke sort of effect – where the playbacked letter will be highlighted as the sound plays to show which sounds represent which letter. Next update will include more finished sounds and coding of the visual parts. There’s no problems with the playback and the sounds can play on top of each other without interrupting one another. One thing I was worried was to load 26 players and if Processing would allow me to do so. This code as a whole is working without problems. So far this is the entire code in processing window: I will provide the information through screenshots and pasting the codes in the forum from now on to underline which code is representing which function. With the help of this “approximation” I managed to code everything to maintain a successful playback for all the sound recordings I’ve made so far. That way I had an idea how to go from there. I’ve found some piano applications that were created in Processing and I’ve found the open sources. Since the action is essentially: you press a key and you hear a sound. The function of pressing a key and hearing a pre-recorded sound brought me the idea of a piano application. The Minim library that’s actually integrated with the Processing is very helpful. The point that I arrived with the sound coding is actually quite promising. So far its entirely focused around sound and the playback of sound but as soon as sound part is dealt with I will put my entire focus on the visualisation part. The coding and everything is being done is processing at the moment. tell Processing to draw images semi-transparentįor(int i = 0 i < song.This post will be an update on how the coding part functions for my interactive sound project – Stereo Type. the second param sets the buffer size to the width of the canvas VideoExport = new VideoExport(this, "render.mp4") Size((int)(background.width * scaleFactor), (int)(background.height * scaleFactor)) set the size of the canvas window based on the loaded image Int frameRate = 24 // This framerate MUST be achievable by your computer. The file must be present in the data folder for your sketch. String imageFile = "background.jpg" // The filename for your background image. PImage background // the background image Int middleY = 0 // this will be overridden in setup ![]() Changing this is how you change the resolution of the sketch. Use Audacity to convert.įloat scaleFactor = 0.25f // Multiplied by the image size to set the canvas size. String audioFile = "audio.wav" // The filename for your music. I prefer to add ffmpeg to my path (google how to do this), then put the above command The command will look something like this:įfmpeg -i render.mp4 -i data/audio.wav -c:v copy -c:a aac -shortest output.mp4 Use ffmpeg to combine the source audio with the rendered video. This is a basic audio visualizer created using Processing.įor more information about VideoExport, see Notice the ffmpeg instructions in the long comment at the top. This code is a simple audio visualizer that paints the waveform over a background image. Run ffmpeg to combine the source audio file with the rendered video.Press q to quit and render the video file. Here’s what the overall process looks like. In other words, this will work for generating Processing visuals that are based on an audio file, but not for Processing sketches that synthesize video and audio at the same time. The final, crappy prerequisite for this particular tutorial is that you must be working with a pre-rendered wav file. Minim and VideoExport are Processing libraries that you can add via Processing menus (Sketch > Import Library > Add Library). You must install Processing, Minim, VideoExport, and ffmpeg on your computer. It’s still a headache to render synchronous audio and video in Processing, but with the technique here you should be able to copy my work and create a simple 2-click process that will get you the results you want in under 100 lines of code. So in this post I want to give searchers an updated guide for rendering synchronous audio and video in processing. ![]() Recently, I searched for the same topic, and found that my old post was one of the top hits, but my old blog was gone. About a decade ago I wrote a blog post about rendering synchronous audio and video in processing.
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