How to delete a video from youtube using youtube v3 api and C# - c#-4.0

Question

Well I am able to upload video on Youtube but i didn't find a way or relevant code to delete video/videos from Youtube.
Here is my code which i tried to delete the youtube video.
private async Task Run()
{
UserCredential credential;
using (var stream = new FileStream("client_secret.json", FileMode.Open, FileAccess.Read))
{
credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
new[] { YouTubeService.Scope.Youtube },
"user",
CancellationToken.None
);
}
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = Assembly.GetExecutingAssembly().GetName().Name
});
var videosDeleteRequest = youtubeService.Videos.Delete("Video ID");
await videosDeleteRequest.ExecuteAsync();
}
But getting 403 response
Error: Google.Apis.Requests.RequestError
Insufficient Permission [403]
Errors [
Message[Insufficient Permission] Location[ - ] Reason[insufficientPermis
sions] Domain[global]
]
A little help or any possible solution will be highly appreciable.

Answer 1

The error translates to:
The video that you are trying to delete cannot be deleted. The request
might not be properly authorized.
https://developers.google.com/youtube/v3/docs/videos/delete
Have you successfully acquired the token of the user that owns the video?

Answer 2

The videos.delete method is preformed on private user data. In order to delete the data you must have permission or consent of the user to access their account. They must have granted you permission in one of the following scopes.
The error message
Message[Insufficient Permission] Location[ - ] Reason[insufficientPermis
sions] Domain[global]
Means that the user did not grant you permission with a hig enough scope. If for example you asked for authorization with only a read only scope you would then not have enough permissions to delete a video.
However if we check your code we can see that you are in fact using YouTubeService.Scope.Youtube. However if you have previously run your application then the client library stored the consent of the user. If you then have changed the scope and not forced the user to consent to authorization again. Then you are still running on the old consent.
The solution in this case is to change "user" to something else which will force it to request authorization again.