bkvirendra / django-videokit

Video storage and processing for Django

Installation

1. Install ffmpeg
2. Install mediainfo
3. Install celery
4. Install django-videokit 'pip install django-videokit'
5. Add 'videokit' to your INSTALLED_APPS

Usage Overview

Settings

Define MEDIA_ROOT and MEDIA_URL, example:

MEDIA_ROOT = os.path.join(BASE_DIR, 'media-uploads')
MEDIA_URL = '/media/'

URLs

Add the media URL to your project's urls.py, example:

from django.conf import settings
from django.conf.urls import url
from django.conf.urls.static import static
from django.contrib import admin

urlpatterns = [
    ...
] + static(settings.MEDIA_URL, document_root = settings.MEDIA_ROOT)

Celery

Configure celery by creating celery.py in your projects application folder, details can be found at: http://docs.celeryproject.org/en/latest/django/first-steps-with-django.html , or see example below:

from __future__ import absolute_import, unicode_literals
import os
from celery import Celery

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'example.settings')

app = Celery('example')
app.config_from_object('django.conf:settings', namespace='CELERY')
app.autodiscover_tasks()
app.conf.broker_url = 'redis://localhost:6379/0'

@app.task(bind=True)
def debug_task(self):
    print('Request: {0!r}'.format(self.request))

VideoField

VideoField is a class very similar in nature to Django's out of the box ImageField. It allows you to upload a video file, retrieve video file properties, and generate thumbnails.

Using VideoField In Your Model

from django.db import models

from videokit.models import VideoField

class MediaItem(models.Model):
    video = VideoField( upload_to = upload_to, null = True, blank = True,
                        width_field = 'video_width', height_field = 'video_height',
                        rotation_field = 'video_rotation',
                        mimetype_field = 'video_mimetype',
                        duration_field = 'video_duration',
                        thumbnail_field = 'video_thumbnail')
    video_width = models.IntegerField(null = True, blank = True)
    video_height = models.IntegerField(null = True, blank = True)
    video_rotation = models.FloatField(null = True, blank = True)
    video_mimetype = models.CharField(max_length = 32, null = True, blank = True)
    video_duration = models.IntegerField(null = True, blank = True)
    video_thumbnail = models.ImageField(null = True, blank = True)

Defined fields such as width_field, and height_field are optional but recommended. Using these fields ensures that the video properties are stored in the database rather than computed from the file.

VideoSpecField

VideoSpecField is a class that leverages ffmpeg to convert videos to other formats. Currently there is support for mp4, ogg and webm files.

Using VideoSpecField In Your Model

from django.db import models

from videokit.models import VideoField

class MediaItem(models.Model):
    video = VideoField( upload_to = upload_to, null = True, blank = True,
                        width_field = 'video_width', height_field = 'video_height',
                        rotation_field = 'video_rotation',
                        mimetype_field = 'video_mimetype',
                        duration_field = 'video_duration',
                        thumbnail_field = 'video_thumbnail')
    video_width = models.IntegerField(null = True, blank = True)
    video_height = models.IntegerField(null = True, blank = True)
    video_rotation = models.FloatField(null = True, blank = True)
    video_mimetype = models.CharField(max_length = 32, null = True, blank = True)
    video_duration = models.IntegerField(null = True, blank = True)
    video_thumbnail = models.ImageField(null = True, blank = True)

    video_mp4 = VideoSpecField(source = 'video', format = 'mp4')
    video_ogg = VideoSpecField(source = 'video', format = 'ogg')
    video_webm = VideoSpecField(source = 'video', format = 'webm')

Generation of files is performed by a celery task when the file is accessed for the first time. You can check the status of the file by calling the generated method on VideoSpecField.