bug(YouTube - Spoof video streams): Age restricted videos fail to play

[Sub123945]

Bug description

https://github.com/user-attachments/assets/2496cf8f-3dc8-4eb3-8a80-07fc7c66dba0

All videos are properly playing but sensitive content not playing

Error logs

Solution

No response

Additional context

No response

Acknowledgements

• I have checked all open and closed bug reports and this is not a duplicate.
• I have chosen an appropriate title.
• All requested information has been provided properly.

[LisoUseInAIKyrios]

It appears to be all age restricted videos.

Searching for "1981 Belgium grand prix" gives age restricted videos that also fail.

https://youtu.be/Zj_srEHF1s8

[oSumAtrIX]

I am not able to reproduce. Logs would be needed. Enable Misc > First toggle and capture logs using logcat: logcat | grep Spoof

[LisoUseInAIKyrios]

I can reproduce using video https://youtube.com/watch?v=wHDh_ruJ8Ug

But the logs don't show why it failed (maybe a zero length response?):

revanced: StreamingDataRequest: video: wHDh_ruJ8Ug took: 203ms
revanced: StreamingDataRequest: Could not fetch any client streams

[oSumAtrIX]

For age restricted videos, only VR can be used. And VR is authorized as the logged in user. This should not fail and it doesn't in my case.

[LisoUseInAIKyrios]

I'm seeing both clients fail. Android VR fails, and when it retries with iOS it also fails:

revanced: StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: ANDROID_VR
revanced: StreamingDataRequest: video: wHDh_ruJ8Ug took: 426ms
revanced: StreamingDataRequest: Received zero length response for video: wHDh_ruJ8Ug
revanced: StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: IOS
revanced: StreamingDataRequest: video: wHDh_ruJ8Ug took: 175ms
revanced: StreamingDataRequest: Received zero length response for video: wHDh_ruJ8Ug
revanced: StreamingDataRequest: Could not fetch any client streams

[oSumAtrIX]

Is the VR request authorized?

[LisoUseInAIKyrios]

Auth seems to be set:

StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: ANDROID_VR
StreamingDataRequest: Including authorization for client: ANDROID_VR
StreamingDataRequest: video: wHDh_ruJ8Ug took: 399ms
StreamingDataRequest: Received empty response for video: wHDh_ruJ8Ug

StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: IOS
StreamingDataRequest: Not including authorization for client: IOS
StreamingDataRequest: video: wHDh_ruJ8Ug took: 161ms
StreamingDataRequest: Received empty response for video: wHDh_ruJ8Ug

StreamingDataRequest: Could not fetch any client streams

[oSumAtrIX]

Does it occur on other accounts? Maybe A/B?

[LisoUseInAIKyrios]

Tried with a different account and still occurs.

[LisoUseInAIKyrios]

All the other expected headers are present:

StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: ANDROID_VR
StreamingDataRequest: Including header: Authorization
StreamingDataRequest: Including header: X-GOOG-API-FORMAT-VERSION
StreamingDataRequest: Including header: X-Goog-Visitor-Id
StreamingDataRequest: video: wHDh_ruJ8Ug took: 448ms
StreamingDataRequest: Received empty response for video: wHDh_ruJ8Ug

StreamingDataRequest: Fetching video streams for: wHDh_ruJ8Ug using client: IOS
StreamingDataRequest: Not including header: authorization
StreamingDataRequest: Including header: X-GOOG-API-FORMAT-VERSION
StreamingDataRequest: Including header: X-Goog-Visitor-Id
StreamingDataRequest: video: wHDh_ruJ8Ug took: 165ms
StreamingDataRequest: Received empty response for video: wHDh_ruJ8Ug

StreamingDataRequest: Could not fetch any client streams

[LisoUseInAIKyrios]

The issue is the language code for Android VR.

Not including the hl parameter and age restricted works.

[oSumAtrIX]

That is quite odd. For unspooled requests I don't think hl is removed.

[LisoUseInAIKyrios]

A short term fix is to add a duplicate Android VR client type where the language code is not set.

Then for age restricted it'll try:

• Android VR (with language code) -- fail
• iOS -- fail
• Android VR (without language code) -- success

age restricted videos will have no audio track flyout and no stable volume, but it'll work again.

But maybe the Android VR request is missing other fields that should be there.

[LisoUseInAIKyrios]

Setting a language code has also fixed a lack of AV1 on Android VR. AV1 is now used for some videos.