Hi there! I see you're having an issue where the video playback in the Hudl app shows a blank or dark screen on your Mac with OS X 10.15.7. Let's start by figuring out a bit more about your situation to narrow this down:

1. Is this happening with all videos you try to play in Hudl, or just specific ones?
2. Have you noticed if the video sound plays normally while the screen stays black?
3. Are you using the Hudl app directly on your Mac, or are you accessing Hudl through a web browser?
4. Have you already tried restarting the app or your computer?

These details will help me tailor the troubleshooting steps more precisely for you. Looking forward to your reply!

number 2

Thanks for clarifying that the sound plays normally, but the video screen remains dark. That definitely helps focus where the issue might be.

Since you're on a Mac with OS X 10.15.7 and the sound for the video is working but the screen is black, here are some steps to try:

1. Check Video Playback in Browser vs. Hudl App:
- Are you using the Hudl app on your Mac, or viewing videos on Hudl’s website through a browser like Safari or Chrome?
- If in browser, try a different browser to see if the video shows up (sometimes browser settings/extensions can block video playback).

2. Update or Reinstall the Hudl App:
- If you’re using the Hudl app on your Mac, ensure it’s up to date. The latest version can fix playback bugs.
- If it is up to date, try uninstalling and reinstalling the app.

3. Check Graphics and Display Settings:
- On your Mac, go to System Preferences → Displays and confirm the resolution and color profile look normal.
- Also, make sure any Night Shift or other display settings aren’t causing odd color shifts.

4. Clear Browser Cache and Cookies (if using browser):
- Sometimes cached data can cause playback issues. Clearing cache and cookies can refresh video streaming.

5. Disable Hardware Acceleration (for browsers):
- Hardware acceleration offloads video processing to your graphics card, but can sometimes interfere.
- Try toggling this in your browser’s settings.

6. Check for Mac OS Updates:
- Although you are on 10.15.7 (Catalina, the latest Catalina version), verify in “System Preferences → Software Update” that no further updates are pending. Sometimes patch updates improve video playback support.

If you want, I can give you step-by-step instructions for any of these steps! Also, did you recently update your Mac OS or the Hudl app before this issue started?

Regarding Hudl more generally, it's a platform that helps teams improve with video and stats, letting you share clips with comments and drawings for better review and analysis1 2.

Let me know how you'd like to proceed or if you’ve tried any of these already.