Implement snapshot testing via CLI part2

.github/workflows/ci.yml

@@ -19,10 +19,14 @@ jobs:
   steps:
   - name: Checkout
     uses: actions/checkout@v2
+  - name: Set up ffmpeg
+    uses: FedericoCarboni/setup-ffmpeg@v2
   - name: Set up Python 3.9
     uses: actions/setup-python@v2
     with:
      python-version: 3.9
   - run: pip install -r requirements.txt
+  - run: pip install gdown
+  - run: gdown 14JzEMo8ScLinvBkl7QEvYvFEi7EBXNAt
   - run: ./run.py -f=examples/face.jpg -t=examples/target.mp4 -o=examples/output.mp4
   - run: diff examples/snapshot.mp4 examples/output.mp4 || exit 1