Popcorn Exporter

A python server that creates mp4s from on popcorn js compositions.

To install, clone the repo, create a virtual environment, and then run

pip install -r requirements.txt

After, all the python requirements are installed you may need to make two small changes to moviepy.

change line 894 in moviepy/video/VideoClip.py to:

if isinstance(img, str) or isinstance(img, unicode):

change line 32 in moviepy/video/fx/resize.py to:

arr = np.fromstring(resized_pil.tobytes(), dtype='uint8')

You'll also need to install imagemagick, and rabbitmq.

For imagemagick (on a mac)

brew install imagemagick

For rabbitmq, see these instructions.

Run the server with:

python server.js

or, using uswgi

uwsgi --socket 0.0.0.0:5000 --protocol=http -w wsgi

Also make sure to start a celery worker:

celery -A server.celery worker

Finally, to test it out in popcorn, open up the javascript console and run:

var data = Butter.app.currentMedia.json;
data.backgroundColor = Butter.app.project.background;

$.ajax({
  type: "POST",
  url: "http://localhost:5000/create_video",
  data: JSON.stringify(data),
  success: function(data) {
    alert('Your video is being prepared, and will be available at: ' + data.url);
  },
  contentType: "application/json",
  dataType: "json"
});