Processing 1.0 - Processing Discourse - Music Video: Midi File Visualization

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Music Video: Midi File Visualization (Read 3946 times)

Christian S

Music Video: Midi File Visualization
Sep 16^th, 2009, 5:52am

I'm currently working on a minimalistic music video and wrote a code that visualises midi events from a file.

reduktion.ch/index.php?id=Sub&subid=Midi

The visualisation in this version is a mere example. I'm not posting this because I think my sketch is particularly innovative/intelligent/beautiful ... but because it might be of interest from a technical point of view. As far as I know, no processing library supports accessing midi events from midi files at the time.

Bug: minim library is used to play a mp3 file. However after some time it stopps abruptly. Any ideas?

PhiLho

Re: Music Video: Midi File Visualization
Reply #1 - Sep 16^th, 2009, 6:07am

I went to Reduktion - Parallelaktion page and after a while, I got some errors in the Java console:
Code:

==== JavaSound Minim Error ====
==== Unable to return a SourceDataLine: unsupported format - PCM_SIGNED 16000.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian

=== Minim Error ===
=== Couldn't load the file organ.mp3

Exception in thread "Animation Thread" java.lang.NullPointerException
	at midiVidClip8.setup(midiVidClip8.java:46)
	at processing.core.PApplet.handleDraw(PApplet.java:1402)
	at processing.core.PApplet.run(PApplet.java:1327)
	at java.lang.Thread.run(Unknown Source)

Note: went there with a computer with no sound card...
I will try it at home where I do have a sound card!

Christian S YaBB Newbies Offline Posts: 6 Switzerland	Re: Music Video: Midi File Visualization Reply #2 - Sep 16^th, 2009, 8:57am Hmmm ... I didn't think of the possibility of a computer with no sound card. Thanks for the error message! I hope it works at home!

jotham YaBB Newbies Offline Posts: 23 Wellington, New Zealand	Re: Music Video: Midi File Visualization Reply #3 - Sep 16^th, 2009, 6:46pm That's cute!

subpixel Senior Member Offline Posts: 261	Re: Music Video: Midi File Visualization Reply #4 - Mar 11^th, 2010, 1:06am Very nice little keyboard there! Note: I see an error in the console at the end/loop point of the music: Couldn't rewind using reset (Stream closed), will try reloading the file. This causes a slight, but noticeable delay in the loop. -spxl
	Processing: subpixels.com, OpenProcessing.org \| VJ portfolio: SPXL.TV

skum YaBB Newbies Offline Posts: 4	Re: Music Video: Midi File Visualization Reply #5 - Mar 15^th, 2010, 6:02pm OMG i LOVE this. faved. <3

Monstah YaBB Newbies Offline Posts: 27	Re: Music Video: Midi File Visualization Reply #6 - Mar 17^th, 2010, 9:53am Heh, that was fun. The keys on the keybord tend to fuse together and look like a single huge key sometimes, tho.

skum YaBB Newbies Offline Posts: 4	Re: Music Video: Midi File Visualization Reply #7 - Mar 17^th, 2010, 10:40am i had a dream about this last night, no joke! XD

Christian S

Re: Music Video: Midi File Visualization
Reply #8 - Mar 24^th, 2010, 12:56am

Thanks for the feedback!

(Skum: I hope it wasn’t a nightmare.)

I uploaded a new version (http://www.reduktion.ch/index.php?id=Sub&subid=Midi), that hopefully reduces the delay between sound and picture. I also replaced the mp3 file with a low quality aif, since minim seems to have problems looping mp3s (or is it my mp3 encoder).

I didnt’t try to fix the vanishing of the lines. It’s the P3D renderer, I suppose.

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