Blank Video Streaming - Only Playing Audio

hi there

Please try this

• Disconnect AirPlay or HDMI Cables: If you are trying to mirror your screen to a TV, monitor, or projector, apps like Netflix, Disney+, and Prime Video deliberately block screen mirroring or external display casting for copyrighted (DRM) content, resulting in a black screen with sound only. Play the video directly on your iPhone screen to test. 
• Disable VPNs or Proxy Apps: Active VPNs interfere with the geo-location and DRM handshake required by streaming services, often breaking video playback while letting audio pass through. Turn off any active VPN or security apps in your settings. 
• Force Close the Streaming Apps: Swipe up from the bottom of your iPhone screen to open the app switcher, then swipe up on Netflix, Prime Video, and Disney+ to close them completely. Reopen just one app to test. 
• Restart Your iPhone: A quick power cycle clears out temporary system glitches affecting media decoders. Press and hold either volume button and the side button until the power-off slider appears, turn off your phone, wait 30 seconds, and turn it back on. 
• Check Local Network Permissions: Go to Settings > Privacy & Security > Local Network and make sure Netflix, Prime Video, and Disney+ have permission to communicate with devices on your network.
• Update Your Apps and iOS: Go to the App Store and update Netflix, Prime Video, and Disney+ to their latest versions, and check Settings > General > Software Update to ensure your iOS is up to date. 

Thank you for your reply. Appreciated!!! However, I did try all the steps but no still updates. I want to play these video platforms in my iPhone. No vpn installed. Several times uninstalled and reinstalled the apps and restarted the phone also multiple time. The issue is still there. Contacted the app

developers , they are saying it’s the issue of the phone