How to display video in PythonMode?

Processing.py
1 
add_library('video')

def setup():
    size(640, 360)
    background(0)
    
    movie = Movie(this, "transit.mov")
    movie.loop()
    
def movieEvent(m):
    m.read()
    
def draw():
    image(movie, 0,0,width,height)

Error says “processing.app.SketchException: java.lang.RuntimeException: Could not load movie file transit.mov”

How to show video correctly?

2

Just dbl checking: your movie is in the data folder?

Kf

3
4

Yeah, it’s under the data folder.

5

I thought maybe it was a BUG so I raise it to github

6

Make sure movie is a global variable and you’re in python mode. :wink:

add_library('video')

def setup():
    size(640, 360)
    background(0)

    global movie
    movie = Movie(this, "transit.mov")
    movie.loop()
    
def movieEvent(m):
    m.read()
    
def draw():
    image(movie, 0,0,width,height)
7

That’s it!!! Thank you WakeMeAtThree, that really helps me a lot :wink:

1 Like
8

Hi,

I tried the code WakeMeAtThree posted with my own video file which I added in the data folder. In processing I get the error:

ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader ‘bootstrap’)
at jycessing.LibraryImporter.addJarToClassLoader(Unknown Source)
at jycessing.LibraryImporter.recursivelyAddJarsToClasspath(Unknown Source)
at jycessing.LibraryImporter.addLibrary(Unknown Source)
at jycessing.LibraryImporter$1.call(Unknown Source)
at org.python.core.PyObject.call(PyObject.java:480)
at org.python.core.PyObject.call(PyObject.java:484)
at org.python.pycode._pyx95.f$0(Test.pyde:1)
at org.python.pycode._pyx95.call_function(Test.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.pycode._pyx94.f$0(/var/folders/13/yzsw53f93c3dd8q0x_kw33c40000gn/T/Test12641138659274035512/Test.pyde:96)
at org.python.pycode._pyx94.call_function(/var/folders/13/yzsw53f93c3dd8q0x_kw33c40000gn/T/Test12641138659274035512/Test.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.util.PythonInterpreter.exec(PythonInterpreter.java:276)
at jycessing.PAppletJythonDriver.processSketch(Unknown Source)
at jycessing.PAppletJythonDriver.findSketchMethods(Unknown Source)
at jycessing.Runner.runSketchBlocking(Unknown Source)
at jycessing.mode.run.SketchRunner.lambda$startSketch$3(Unknown Source)
at java.base/java.lang.Thread.run(Thread.java:829)

When I run this script in the terminal I get the error:
Exception: This sketch requires the “video” library. at 0:0 in Test.pyde

Does anyone know what I’m doing wrong?

1 Like
9

Welcome @eefneef. Did you install the Video library? (Sketch > Import Library > Add Library)

1 Like
10

Thanks for your answer! Yes I did and also downloaded the library and manually added it to a subdirectory named libraries in my projectfolder just in case (as stated in these docs: Processing.py on the command line \ Tutorials).
The Java version works just fine by the way, also tested that out.

1 Like
11

Hi,

I get a similar error as eefneef when trying to run the code from WakeMeAtThree even though I installed and added the library.
Also when I try to add libraries in other projects in python mode I get the same error:

java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader ‘bootstrap’)
at jycessing.LibraryImporter.addJarToClassLoader(LibraryImporter.java:315)
at jycessing.LibraryImporter.recursivelyAddJarsToClasspath(LibraryImporter.java:164)
at jycessing.LibraryImporter.addLibrary(LibraryImporter.java:140)
at jycessing.LibraryImporter$1.call(LibraryImporter.java:82)
at org.python.core.PyObject.call(PyObject.java:480)
at org.python.core.PyObject.call(PyObject.java:484)
at org.python.pycode._pyx35.f$0(sketch_220213b.pyde:1)
at org.python.pycode._pyx35.call_function(sketch_220213b.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.pycode._pyx34.f$0(/Users/leonwoltermann/Documents/Processing/Projects/5/2/sketch_220213b/sketch_220213b.pyde:96)
at org.python.pycode._pyx34.call_function(/Users/leonwoltermann/Documents/Processing/Projects/5/2/sketch_220213b/sketch_220213b.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.util.PythonInterpreter.exec(PythonInterpreter.java:276)
at jycessing.PAppletJythonDriver.processSketch(PAppletJythonDriver.java:233)
at jycessing.PAppletJythonDriver.findSketchMethods(PAppletJythonDriver.java:613)
at jycessing.Runner.runSketchBlocking(Runner.java:399)
at jycessing.mode.run.SketchRunner.lambda$2(SketchRunner.java:112)
at java.base/java.lang.Thread.run(Thread.java:829)

Can somebody help me?

1 Like
12

Python mode from the command line has not been actively maintained for some time now, unfortunately.
Have you tried to use the video library from the Processing IDE?

1 Like
13

Are you using Processing 3.5.4?

Processing 4.0 betas and Python mode are still a bit rough.

There are also some issues on loading Python mode libraries in different platforms (I had trouble with Serial and Video on Windows and Mac a few years ago) :frowning: