Add transformer for video files (gatsby-transformer-video)

[axe312ger]

Summary

I am working on gatsby-transformer-video to transform videos within Gatsby.

For now, its just a setFieldsOnGraphQLNodeType in my projects gatsby-node.js.

My main question:

Is @gatsbyjs/inkteam interested to have video transformation within the gatsby core repo?

The caching mechanism will be close to what gatsby-transformer-sqip does and I think in perspective of Gatsby v3, Gatsby Cloud etc. it might be valuable to have this in the Gatsby core.

If not, I am happy to release it as a separate project on GitHub & npm :)

So how does it work?

It will transform videos via ffmpeg from file-system + contentful into:

• thumbnails / posterimages (jpeg)
• animated thumbnails / previews (gif, webp, mp4)
• for

Additionally it will provide components to properly render the previews and videos.

Basic example

example query:

query MyQuery {
  allContentfulAsset {
    edges {
      node {
        id
        file {
          url
          contentType
        }
        video(width:1980) {
          h264,
          h265
        }
        videopreview(width: 600, fps: 4, duration: 3) {
          mp4
          webp
          gif
        }
      }
    }
  }
}

Rendering:

import React from 'react'

const PreviewImage = ({ videopreview }) => (
  <img src={videopreview.jpg} />
)

const AnimatedPreviewImage = ({ videopreview }) => (
  <picture>
    <source type="video/mp4" srcSet={videopreview.mp4} />
    <source type="image/webp" srcSet={videopreview.webp} />
    <img src={videopreview.gif} alt={description || title} />
  </picture>
)

const Video = ({ video, videopreview }) => (
  <Video playsinline preload="auto" controls poster={videopreview.jpg}>
    <source src={video.h265} type="video/mp4; codecs=hevc" />
    <source src={video.h264} type="video/mp4; codecs=avc1" />
  </Video>
)

Or go crazy by using the generated animated preview as posterimage:

import React from 'react'
import styled from 'styled-components'

const VideoWrapper = styled.div`
  position: relative;
  height: 100%;

  & video {
    position: relative;
    z-index: 2;
  }
`
const VideoAnimatedPosterImage = styled.picture`
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
`

const VideoWithAnimatedPosterImage = ({ video, videopreview }) => (
  <VideoWrapper>
    <VideoAnimatedPosterImage>
      <source type="video/mp4" srcSet={videopreview.mp4} />
      <source type="image/webp" srcSet={videopreview.webp} />
      <img src={videopreview.gif} alt={description || title} />
    </VideoAnimatedPosterImage>
    <Video
      playsinline
      preload="auto"
      controls
      poster="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"
    >
      <source src={video.h265} type="video/mp4; codecs=hevc" />
      <source src={video.h264} type="video/mp4; codecs=avc1" />
    </Video>
  </VideoWrapper>
)

Motivation

I want to host videos on my own, not using payed services or share them on youtube. Additionally this allows me to transform the video in any shape I like to.

Demotime

Example project production link: https://eineartjakob.de

here is some video of it in action: Kapture 2019-06-24 at 11.43.56.mp4.zip

Generated animated preview gif from the plugin: (fps are 50% of other previews on gifs due to massive file size of gifs)

Webp & mp4 variants are way smaller even with double fps

Anything else?

What else? Did I forget something? Any further thoughts?

[KyleAMathews]

This would definitely be something we're interested in! This will work super well with Gatsby Cloud as we'll be able to off-load processing of videos into cloud workers.

[KyleAMathews]

We're designing a proper Jobs API that this should hook into.

[axe312ger]

This would definitely be something we're interested in! This will work super well with Gatsby Cloud as we'll be able to off-load processing of videos into cloud workers.

Yes, exactly the issue I am slowly getting with my project. Since we now have more than 10 videos, converting all of these in h264, h265 + previews in 3 formats, clearing the cache on netlify would result in a broken build 😢

We're designing a proper Jobs API that this should hook into.

Omg that be amazing!

[axe312ger]

So I talked to @KyleAMathews how we can progress here, this is the outcome of our discussion:

• I'll extract my code from the customer project and create gatsby-transformer-video within the gatsby-core repo (asap)
• We get it reviewed by awesome people like u (I am really not a FFMPEG professional, some should review my StackOverflow copy pasta 😅)
• It will be a v0 till the new Jobs API is ready some day in Gatsby v2

I guess I'll close the issue as soon the PR is ready for review :)

Ps.:

The project I'll extract the code from is now live.
If you are curious how the outcome of the new transformer could look and feel:

https://eineartjakob.de

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[axe312ger]

Closing here, lets continue discussion in the pull request #15783