django-video-transcoding

Simple video transcoding application for Django Framework

Installation

System requirements

In case of latest Ubuntu LTS (20.04):

1. ffmpeg-4.x

$> sudo apt install ffmpeg

2. mediainfo

$> sudo apt install mediainfo 

3. RabbitMQ

$> sudo apt install rabbitmq-server

django-video-transcoding

pip install django-video-transcoding

Configure Django

Edit your project settings.py

INSTALLED_APPS.append('video_transcoding')

Env

Common env variables used in django web server and celery

DJANGO_SETTINGS_MODULE=YOUR_PROJECT.settings
VIDEO_TRANSCODING_CELERY_BROKER_URL=amqp://guest:guest@rabbitmq:15672/

Web-server-only env variables:

VIDEO_DOWNLOAD_SOURCE=0
VIDEO_EDGES='http://edge-1.localhost,http://edge-2.localhost'

Celery-only env variables:

VIDEO_TEMP_DIR=/tmp
VIDEO_TRANSCODING_CELERY_CONCURRENCY=2
VIDEO_ORIGINS='http://origin-1.localhost/video,http://origin-2.localhost/video'

Start celery worker

$> celery worker -A video_transcoding.celery

Develop

Development environment quickstart guide

Tests

src/manage.py test

Type checking

$> pip install mypy django-stubs
$> cd src && /data/dvt/virtualenv/bin/dmypy run -- \
   --config-file ../mypy.ini -p video_transcoding

TBD:

• travis-ci
• sphinx docs - autodoc + manual
• coverage
• typing
• badges
• video hosting demo project with docker-compose, nginx and player demo

Production

Graceful shutdown

• if you are running transcoder in docker, make sure that celery master process has pid 1 (docker will send SIGTERM to it by default)
• when using separate celery app, send SIGUSR1 from master to workers to trigger soft shutdown handling (see video_transcoding.celery.send_term_to_children)

Settings

Application settings can be set up via env variables, see video_transcoding.defaults. Also defaults can be overridden this via django.conf.settings.VIDEO_TRANSCODING_CONFIG.

Model inheritance

For preset-related models use <Model>Base abstract models defined in video_transcoding.models. For overriding Video model set VIDEO_TRANSCODING_CONFIG["VIDEO_MODEL"] key to app_label.ModelName in settings. Connect other django models to Video using video_transcoding.models.get_video_model(). When Video is overridden, video model admin is not registered automatically. As with migrations, this should be done manually.