Video URI throwing System.ArgumentOutOfRangeException

[omansak]

Video URI throwing System.ArgumentOutOfRangeException

[rubensollie]

I think I've found the problem for this issue. You just need to change a single line in YouTubeVideo.Decrypt.cs.

You need to change this function:

private string DeclaredFunctionPrefix(string function) =>
"function " + function + '(';

to this:

private string DeclaredFunctionPrefix(string function) =>
function + "=function(";


It gives this exception, because YouTube has probably changed the javascript. I think it has been changed from function br(a) to br=function(a)

[CJProgramming23]

Yeah that works. It worked for all of the ~100 videos I tested it on. Thanks.

[jamesqo]

Thanks for reporting this, guys. I'll publish a new NuGet package by tonight.

[jamesqo]

Possibly related: ovnisoftware/YoutubeExtractor@6126488

[rubensollie]

No problem, happy to help. It would probably be the best to check for both function br(a) and br=function(a) though, might they change it back in the future. Could save some work later on. Good evening!

[rubensollie]

It seems like youtube has updated again, so the issue is back. No worries though, because the fix is really easy again.

It seems to have changed

from var {function}=function()
to nh.{function}=function()

so instead of checking for the var like we have now:
int index = js.IndexOf($"var {function}=function(");

we change it to:
int index = js.IndexOf($"{function}=function(");

This seems to fix it again for now.

[jamesqo]

Fixed again; I'll upload the new NuGet package within a few minutes. Thanks @rubensollie for notifying me.

[iancona]

It is happening again. :(