Fix download errors by using mostly VISIONOS agent - #965
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This was referenced Aug 19, 2026
Author
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To clarify: the agent fallback works for age-restricted. |
This was referenced Aug 20, 2026
Tyrrrz
requested changes
Aug 22, 2026
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| [Fact] | ||
| public async Task I_can_get_the_list_of_available_streams_of_a_video_blocked_by_android_vr() | ||
| { | ||
| // Arrange | ||
| using var youtube = new YoutubeClient(); | ||
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| // Act | ||
| var manifest = await youtube.Videos.Streams.GetManifestAsync(VideoIds.AndroidVrBotCheck); | ||
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| // Assert | ||
| manifest.Streams.Should().NotBeEmpty(); | ||
| manifest.GetAudioStreams().Should().NotBeEmpty(); | ||
| manifest.GetVideoStreams().Should().NotBeEmpty(); | ||
| } |
| public const string WithMultipleAudioLanguages = "ngqcjXfggHQ"; | ||
| public const string WithUpscaledStreams = "IFACrIx5SZ0"; | ||
| public const string WithUpscaledStreams = "0N1_0SUGlDQ"; | ||
| public const string AndroidVrBotCheck = "u9Dg-g7t2l4"; |
| public const string WithUpscaledStreams = "IFACrIx5SZ0"; | ||
| public const string WithUpscaledStreams = "0N1_0SUGlDQ"; | ||
| public const string AndroidVrBotCheck = "u9Dg-g7t2l4"; | ||
| public const string MadeForKids = "nQuzyJ-C1Fc"; |
Owner
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Let's rename this to just ForKids and move it below ContentCheck* videos
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| public async ValueTask<PlayerResponse> GetPlayerResponseAsync( | ||
| VideoId videoId, | ||
| private async ValueTask<PlayerResponse> SendPlayerRequestAsync( |
Owner
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IMO, this should be inlined. The indirection causes more cognitive overhead than duplication.
| return PlayerResponse.Parse(await response.Content.ReadAsStringAsync(cancellationToken)); | ||
| } | ||
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| public async ValueTask<PlayerResponse> GetPlayerResponseAsync( |
Owner
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This could probably be refactored into GetPlayerResponseForVisionOsAsync and GetPlayerResponseForAndroidAsync. GetPlayerResponseAsync would then just handle retrying.
Author
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Do you want me to edit the PR or you handle it from here? |
Owner
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@mysteryx93 yes, please fix as much as you can youself, I'll clean up afterward |
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Closes #902 #962 #964
The downloader has been broken for some time, and that's the kind of issues that are extremely time-consuming to diagnose.
I have put Grok Build to the task, so this is AI-generated, and I have manually reviewed every line modified. All tests are now passing. 2 were still failing: Live Stream and Upscaler, because of outdated videos. The code is fine. I updated the video IDs. All tests now pass. So far Grok passed every test I gave it; it just keeps going until the tests pass.
Summary of changes
The failure was not the video. YouTube’s current ANDROID_VR 1.60.19 client (what YoutubeExplode still used) now returns LOGIN_REQUIRED / “Sign in to confirm you’re not a bot” for public videos, including u9Dg-g7t2l4. That makes the main cipher-less path fail, then the #902 cipher fallback also fails because player JS is no longer parseable.
yt-dlp already moved off that client. Its JS-less default is now VISIONOS, which still returns progressive URLs without a PO token.
What changed
Still broken (unchanged YouTube limits)
• Age-restricted videos still need the cipher client. Player JS is still unparseable.