Failed to extract cipher manifest

[mikethea1]

Version

6.5.4

Platform

.NET 8 / Windows 11

Steps to reproduce

var client = new YoutubeClient();
VideoId id = new("https://www.youtube.com/watch?v=UFdO3wodIJk");
try { await client.Videos.GetAsync(id); }
catch (Exception ex) { Console.WriteLine(ex); } // VideoUnavailableException
try { var cc = await client.Videos.ClosedCaptions.GetManifestAsync(id); }
catch (Exception ex) { Console.WriteLine(ex); } // VideoUnavailableException
try { var streams = await client.Videos.Streams.GetManifestAsync(id); }
catch (Exception ex) { Console.WriteLine(ex); } // YouTubeExplodeException "Failed to extract the cipher manifest."

Details

Thanks for building and maintaining this great library!

While the library works great for most videos I try it with, this particular one fails reliably for me even though on the front-end I don't see anything special about it.

Checklist

• I have looked through existing issues to make sure that this bug has not been reported before
• I have provided a descriptive title for this issue
• I have made sure that this bug is reproducible on the latest version of the package
• I have provided all the information needed to reproduce this bug as efficiently as possible
• I have sponsored this project
• I have not read any of the above and just checked all the boxes to submit the issue

[wy6688]

same error, any fix?

[Kexnuf]

Worked fine for me until all of a sudden throws this exception, same code same everything, did you find any solution?

[mikethea1]

Could this be related to yt-dlp/yt-dlp#14404 ?

[Sumanuil]

Could this be related to yt-dlp/yt-dlp#14404 ?

Possibly, but at least for me, installing Deno solved nothing.

[mikethea1]

@Sumanuil installing deno wouldn't help since that solution is specific to yt-dlp. I was more wondering whether YoutubeExplode was running into any of the same problems that were motivating yt-dlp to install deno.

[Tyrrrz]

YouTube changed their player source code format in a very significant way, basically making the current parsing logic that YTE employs obsolete. I spent some time analyzing the new format, and it seems that it would be quite difficult to adapt.

Note that the cipher route is only used as a fallback when the main route fails. Currently, the main route does not work because of #853 -- and the fallback route does not work because of the above-mentioned updates. If/when #853 is fixed, this issue will become much less impactful, as the fallback won't be needed for 99% of videos.

[Tyrrrz]

Could this be related to yt-dlp/yt-dlp#14404 ?

It is related, yes. YTE doesn't use an interpreter though, but the underlying issue is the same.

[ZmorzynskiK]

@Tyrrrz sooo any idea how to fix this? :) Where should we look for a possible places to make changes? PlayerResponse class?