Authentication errors for Youtube (Favorites and Subscriptions)

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Open Internet Video/YouTube.
2. Enter correct Username in Options (password is not requested).
3. Select Favorites/Subscriptions in YouTube menu.

What is the expected output?
Videos stored in Favorites/Subscriptions.

What do you see instead?
Empty screen.

What version of the product are you using?
2.0.10

On what operating system?
ASUS O!Play R1 with firmware R3 1.21

Please provide any additional information below.
As I found in rss/youtube/yt_index.rss, mentioned lists are retrieved via URLs:
http://gdata.youtube.com/feeds/api/users/<username>/favorites?
http://gdata.youtube.com/feeds/api/users/<username>/newsubscriptionvideos?

Trying that in browser I see the errors:
"Favorites of requested user are not public."
"Login required to view this user's new subscription videos."

It looks like YouTube started to require authentication to review this 
information. So, it is needed to add a password setup to Options and 
appropriate authentication logic for YouTube plugin.

Original issue reported on code.google.com by andr...@gmail.com on 7 Jan 2012 at 9:34

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I couldnt reproduce the issue with my username - it displays everything 
normally unless I disable specifically some sharing options, but I believe YT/G 
may start more and more requiring logins as you describe.

Before going further, please verify your sharing settings. 

http://www.youtube.com/account_sharing

Some features could be disabled for public sharing there. Enable everything and 
try again.

-------------------------

If this is not the case, could you check what I did here 
http://code.google.com/p/media-translate/issues/detail?id=66

and try identical user-agent replacement for test, say if you have wget on your 
pc or the one in media player. 

Just check how to use the WGET command line parameters and save outputs of 
links you reported with your username without and with modified user agent 
emulation.

If the one with modified agent outputs your lists, we can make some fix.
If not ... maybe some JS and smart script will be needed to maintain full 
logins in future.

Regards

Original comment by lorolo...@gmail.com on 10 Jan 2012 at 4:16

[GoogleCodeExporter]

Thank you. I checked off the corresponding account sharing options for 
favorites and subscriptions (in Youtube section) and the issue has resolved. 
However user-agent replacement like in the issue 66 didn't resolve my issue 
before.

Example of wget output wihout user agent emulation:
Connecting to gdata.youtube.com[209.85.148.118]:80
wget: server returned error 403: HTTP/1.1 403 Forbidden

I couldn't emulate user agent in this version of wget.

Original comment by andr...@gmail.com on 12 Jan 2012 at 1:55

[GoogleCodeExporter]

Yes, the stuff has nothing to do with issue 66.

If you "disable" some sharing features, the correspondent links with <username> 
will not be accessible anymore by others, including mediaplayer "client" (msdl, 
wget, main RSS engine, etc) unless they support modern browser's login 
mechanism (js/cookies ...) 

I think Serge is working already on javascript handling (a binary was added to 
repository).
Hopefully, such web logins with password would be possible in the future.

Original comment by lorolo...@gmail.com on 12 Jan 2012 at 2:44