Remotion with Stoat Video Preview

This is a fork of the remotion-dev/template-helloworld repo to demo how to use Stoat to preview your Remotion video. Also see this tutorial for details.

1. Install the Stoat App for the repo.

2. Create a GitHub workflow for preview. An example can be found in .github/workflows/preview-video.yml.

   name: Preview video
   on:
    push:
      branches:
        - main
    pull_request:
      branches:
        - main
   jobs:
    render:
      name: Render video
      runs-on: ubuntu-latest
      steps:
        - uses: actions/checkout@v3
        - uses: actions/setup-node@v3
          with:
            node-version: '16'
            cache: npm
        - run: sudo apt update
        - run: sudo apt install ffmpeg
        - run: npm i
        - name: Generate video
          run: npm run build
        - name: Generate gif
          run: ffmpeg -i out/video.mp4 -vf "fps=10,scale=640:-1" -pix_fmt rgb24 out/video.gif
        - name: Run Stoat Action
          uses: stoat-dev/stoat-action@v0
          if: always()

3. Add the Stoat config in .stoat/config.yaml.

   ---
   version: 1
   enabled: true
   comment_template_file: .stoat/comment.hbs
   plugins:
     static_hosting:
       video_preview:
         # This file is generated by remotion in the
         # "Generate video" step of the GitHub workflow.
         path: out/video.mp4
       gif_preview:
         # This file is generated from the remotion video in the
         # "Generate gif" step of the GitHub workflow.
         path: out/video.gif

4. Add the Stoat template in .stoat/comment.hbs.

   ## Preview
   
   [![preview]({{ plugins.static_hosting.gif_preview.link }})]({{ plugins.static_hosting.video_preview.link }})
   
   (Click the GIF go to the full video.)

   The template file path must match the comment_template_file field in the Stoat config.

5. That's it. Now each time you make changes to the repo and opens a pull request, a comment will show up to provide a preview of the generated video like this:

   

   (Click the GIF go to the full video.)

   Check out this pull request for details.