3 second video for testing purposes.

Three Second Test Video Grey:
https://youtu.be/1O0yazhqaxs

Three Second Test Video Blue
https://youtu.be/18DYQVYKqTU

Three Second Test Video Red
https://youtu.be/-c4yVUrVCzw

Three Second Test Video Green
https://youtu.be/gkZEhCeeXkI

More test videos and other videos check out:
https://www.youtube.com/channel/UC68aZJBtTXowhmMW97Tljkw?sub_confirmation=1