Me: I have YouTube playing audio on my phone. How much bandwidth is it using? Is it using bandwidth for video? The screen of the phone is off.
Gemini: Here’s what we know about YouTube audio and bandwidth usage:
When the screen is off:

• Audio: Even with the screen off, YouTube will still stream audio if you’re actively listening. The amount of bandwidth used depends on the audio quality:
  • Opus: This is the preferred codec for most videos. It can range from 64 kbps to 256 kbps depending on the selected quality.
  • AAC: Older videos or custom uploads might use AAC. These typically have bitrates of 128 kbps for stereo and 384 kbps for 5.1 surround sound.
• Video: With the screen off, YouTube should not be streaming video data. This means no additional bandwidth is used for video.
  Estimating your bandwidth usage:
  Without knowing the specific audio quality you’re using, it’s difficult to give an exact answer. However, based on the information above, here are some estimates:
• Low quality audio (64 kbps): Around 0.8 MB per minute.
• Standard quality audio (128 kbps): Around 1.6 MB per minute.
• High quality audio (256 kbps): Around 3.2 MB per minute.
  Additional factors:
• Background data usage: Check your phone settings to see if YouTube is allowed to use data in the background. If enabled, it might pre-buffer some audio even when the screen is off, using slightly more bandwidth.
• Cellular vs. Wi-Fi: Cellular data usage might be charged differently than Wi-Fi usage, so be aware of your data plan.
  Recommendations:
• If you’re concerned about data usage, consider:
  • Switching to a lower audio quality in the YouTube settings.
  • Only using YouTube over Wi-Fi.
  • Using a data-saving app to manage your overall data usage.
    I hope this information helps!