wagtailvideos

Based on wagtailimages. The aim was to have feature parity with images but for html5 videos. Includes the ability to transcode videos to a html5 compliant codec using ffmpeg.

Requirements

• Wagtail >= 6.1 (for older wagtail version see the tags)
• ffmpeg (optional, for transcoding)

Installing

Install using pypi

pip install wagtailvideos

Add wagtailvideos to your installed apps.

INSTALLED_APPS = [
    'wagtailvideos',
]

Using

On a page model:

Implement as a ForeignKey relation, same as wagtailimages.

from django.db import models

from wagtail.admin.edit_handlers import FieldPanel
from wagtail.core.fields import RichTextField
from wagtail.core.models import Page

from wagtailvideos.edit_handlers import VideoChooserPanel


class HomePage(Page):
    body = RichtextField()
    header_video = models.ForeignKey('wagtailvideos.Video',
                                     related_name='+',
                                     null=True,
                                     on_delete=models.SET_NULL)

    content_panels = Page.content_panels + [
        FieldPanel('body'),
        VideoChooserPanel('header_video'),
    ]

In a Streamfield:

A VideoChooserBlock is included

from wagtail.admin.edit_handlers import StreamFieldPanel
from wagtail.core.fields import StreamField
from wagtail.core.models import Page

from wagtailvideos.blocks import VideoChooserBlock


class ContentPage(Page):
  body = StreamField([
      ('video', VideoChooserBlock()),
  ])

  content_panels = Page.content_panels + [
      StreamFieldPanel('body'),
  ]

In template:

The video template tag takes one required postitional argument, a video field. All extra attributes are added to the surrounding <video> tag. The original video and all extra transcodes are added as <source> tags.

{% load wagtailvideos_tags %}
{% video self.header_video autoplay controls width=256 %}

Jinja2 extensions are also included.

How to transcode using ffmpeg:

Using the video collection manager from the left hand menu. In the video editing section you can see the available transcodes and a form that can be used to create new transcodes. It is assumed that your compiled version of ffmpeg has the matching codec libraries required for the transcode.

Disable transcode:

Transcode can be disabled using the WAGTAIL_VIDEOS_DISABLE_TRANSCODE setting.

# settings.py
WAGTAIL_VIDEOS_DISABLE_TRANSCODE = True

Modify Thumbnail extension:

The automatically generated Thumbnail extension can be modified using the WAGTAIL_VIDEOS_THUMBNAIL_EXTENSION setting. Default value is jpg

# settings.py
WAGTAIL_VIDEOS_THUMBNAIL_EXTENSION = 'webp'

Custom Video models:

Same as Wagtail Images, a custom model can be used to replace the built in Video model using the WAGTAILVIDEOS_VIDEO_MODEL setting.

# settings.py
WAGTAILVIDEOS_VIDEO_MODEL = 'videos.AttributedVideo'

# app.videos.models
from django.db import models
from modelcluster.fields import ParentalKey
from wagtailvideos.models import AbstractVideo, AbstractVideoTranscode

class AttributedVideo(AbstractVideo):
    attribution = models.TextField()

    admin_form_fields = (
        'title',
        'attribution',
        'file',
        'collection',
        'thumbnail',
        'tags',
    )

class CustomTranscode(AbstractVideoTranscode):
    video = models.ForeignKey(AttributedVideo, related_name='transcodes', on_delete=models.CASCADE)

    class Meta:
        unique_together = (
            ('video', 'media_format')
        )

# Only needed if you are using the text tracks feature
class CustomTrackListing(AbstractTrackListing):
    video = models.OneToOneField(AttributedVideo, related_name='track_listing', on_delete=models.CASCADE)

class CustomVideoTrack(AbstractVideoTrack):
    listing = ParentalKey(CustomTrackListing, related_name='tracks', on_delete=models.CASCADE)

Video text tracks:

To enable the uploading and displaying of VTT tracks (e.g. subtitles, captions) you'll need to add wagtail_modeladmin to your installed apps. Once added, there will be an new area in the admin for attaching VTT files to videos with associaled metadata.

Future features

• Some docs
• Richtext embed
• Transcoding via external service rather than ffmpeg
• Remove wagtail-modeladmin dependency