Bug: YouTube livestreams don't work

[Aultus-defora]

Reproduction steps

Open any YouTube livestream that is live.

Actual result

It says that video error was detected but also says that it fails to find iOS data stream.

Expected result

Livestream can be watched without opening it on Page.

Grayjay Version

372

What plugins are you seeing the problem on?

YouTube

Plugin Version

332

Which android version are you using?

Android 16

Which device are you using?

Google Pixel 9a

Which operating system are you using?

GrapheneOS

When do you experience the issue?

• While logged in
• While logged out
• N/A

Are you using a VPN?

No

References

Having to swap between seeing the stream and writting the comment is annoying.
Haven't seen iOS or Android sources in awhile, seems only UMP sources exist but apparently UMP sources don't exist with livestreams on YouTube ever

Relevant log output

[Zvonimir-FUTO]

Can you please share your Youtube settings? There is a copy button on the bottom of plugin settings.

Also in case you didn't mistype the plugin version please update it to latest v332.

[Aultus-defora]

{
"advanced": null,
"sponsorBlockCat_Intro": "0",
"channelRssOnly": "false",
"useiOS": "true",
"sponsorBlockNoVotes": "false",
"isInlinePlaybackNoAd_login": "false",
"verifyIOSPlayback": "true",
"allow_av1": "false",
"use_html5_livestreams": "false",
"allowControversialRestricted": "true",
"isInlinePlaybackNoAd": "false",
"deArrow": "false",
"use_session_client_pot": "true",
"notify_bg": "false",
"sponsorBlockCat_Self": "0",
"allow_ump_backoff_async": "true",
"deArrowOverview": "false",
"use_combined_ump": "false",
"use_session_client": "true",
"authChannels": "false",
"youtubeDislikes": "true",
"authDetails": "false",
"use_combined_ump_audio": "true",
"youtubeDislikerHeader": null,
"sponsorBlockCat_Filler": "0",
"deArrowTitles": "false",
"deArrowAllowNoVotes": "false",
"allow_ump_backoff": "true",
"fallback_home_trending": "false",
"allowLoginFallback": "true",
"useAggressiveUMPRecovery": "true",
"notify_ump_recovery": "false",
"allowMemberContent": "false",
"sponsorBlockCat_Sponsor": "1",
"youtubeActivity": "false",
"allowAgeRestricted": "true",
"use_secondry_ump_temp": "false",
"sponsorBlockCat_Outro": "0",
"fallback_full_player": "true",
"sponsorBlock": "false",
"notify_cipher": "false",
"use_non_browser": "false",
"sponsorBlockCat_Offtopic": "0",
"use_variable_pot": "false",
"useAndroid": "true",
"deArrowHeader": null,
"deArrowThumbnails": "false",
"showVerboseToasts": "true",
"sponsorBlockHeader": null,
"sponsorBlockCat_Preview": "0",
"allow_ump_plugin_reloads": "true",
"detect_session_pot": "false",
"use_html5_livestreams_pot": "false",
"useUMP": "false"
}

[Aultus-defora]

Is there a setting that could make livestreams work?

[Zvonimir-FUTO]

To fix the issue please enable Use HTML5 Livestreams POT Tokens and Use HTML5 Livestreams instead of iOS under Advanced in Youtube plugin settings.

From other settings that you should change I can see you disabled Use Combined UMP and Detect Session POT which should be enabled so regular videos work.

Please provide us feedback if issue has been fixed once you correct these.

[Aultus-defora]

The first two settings made livestreams work. Use Combined UMP option was on after I made advanced settings visible, Detect Session POT doesn't seem to have changed anything.