Youtube plugin don't work

Binary package hint: totem

Steps to reproduce:

1. Open Totem.
2. Enable Youtube plugin (if it was not enabled yet).
3. Open Sidebar. Select 'Youtube' from the dropdown list.
4. Do any search you want. Results thumbnails appears.
5. Double click on any of the result.

Expected behavior:

The video starts to reproduce.

Actual behavior:

- A message error is displayed: "An error occurred. Could not open location; you might not have permission to open the file."
- The following error messages are displayed in the console:

ricardo@kadath:~$ totem
** (totem:8540): DEBUG: Init of Python module
** (totem:8540): DEBUG: Registering Python plugin instance: YouTube+TotemPythonPlugin
** (totem:8540): DEBUG: Creating object of type YouTube+TotemPythonPlugin
** (totem:8540): DEBUG: Creating Python plugin instance

(totem:8540): libgnomevfs-WARNING **: Cannot load module `/usr/lib/gnome-vfs-2.0/modules/libmapping.so' (/usr/lib/gnome-vfs-2.0/modules/libmapping.so: cannot open shared object file: No such file or directory)

(totem:8540): libgnomevfs-WARNING **: Cannot load module `/usr/lib/gnome-vfs-2.0/modules/libmapping.so' (/usr/lib/gnome-vfs-2.0/modules/libmapping.so: cannot open shared object file: No such file or directory)

(totem:8540): libgnomevfs-WARNING **: Cannot load module `/usr/lib/gnome-vfs-2.0/modules/libmapping.so' (/usr/lib/gnome-vfs-2.0/modules/libmapping.so: cannot open shared object file: No such file or directory)

(totem:8540): libgnomevfs-WARNING **: Cannot load module `/usr/lib/gnome-vfs-2.0/modules/libmapping.so' (/usr/lib/gnome-vfs-2.0/modules/libmapping.so: cannot open shared object file: No such file or directory)
0:00:44.576263638 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:324:bvw_error_msg: message = Could not open resource for reading.
0:00:44.576341429 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:326:bvw_error_msg: domain = 2739 (gst-resource-error-quark)
0:00:44.576359952 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:327:bvw_error_msg: code = 5
0:00:44.576375902 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:328:bvw_error_msg: debug = gstgnomevfssrc.c(841): gst_gnome_vfs_src_start (): /play/source:
Could not open vfs file "http://www.youtube.com/get_video?video_id=CZtxvqjaiNQ&t=OEgsToPDskLIsjiEok_5xnbdL3Op_rlr" for reading: Access denied (16)
0:00:44.576396688 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:329:bvw_error_msg: source = <source>
0:00:44.576429161 8540 0x80a2490 ERROR totem /build/buildd/totem-2.22.0/src/backend/bacon-video-widget-gst-0.10.c:330:bvw_error_msg: uri = http://www.youtube.com/get_video?video_id=CZtxvqjaiNQ&t=OEgsToPDskLIsjiEok_5xnbdL3Op_rlr
** Message: Error: Could not open resource for reading.
gstgnomevfssrc.c(841): gst_gnome_vfs_src_start (): /play/source:
Could not open vfs file "http://www.youtube.com/get_video?video_id=CZtxvqjaiNQ&t=OEgsToPDskLIsjiEok_5xnbdL3Op_rlr" for reading: Access denied (16)