I just tried launching from a terminal to see what additional output there might be:
totem /media/cdrom0
** Message: Error: A VCD protocol source plugin is required to play this stream, but not installed.
gstplaybasebin.c(1604): gen_source_element (): /play:
No URI handler for vcd
** Message: Missing plugin: gstreamer|0.10|totem|VCD protocol source|urisource-vcd (VCD protocol source)
no application found
** Message: No installation candidate for missing plugins found.
** Message: Error: A VCD protocol source plugin is required to play this stream, but not installed.
gstplaybasebin.c(1604): gen_source_element (): /play:
No URI handler for vcd
** Message: Missing plugin: gstreamer|0.10|totem|VCD protocol source|urisource-vcd (ignoring)
** Message: All missing plugins are blacklisted, doing nothing
I just tried launching from a terminal to see what additional output there might be:
totem /media/cdrom0 c(1604) : gen_source_element (): /play:
** Message: Error: A VCD protocol source plugin is required to play this stream, but not installed.
gstplaybasebin.
No URI handler for vcd
** Message: Missing plugin: gstreamer| 0.10|totem| VCD protocol source| urisource- vcd (VCD protocol source) c(1604) : gen_source_element (): /play:
no application found
** Message: No installation candidate for missing plugins found.
** Message: Error: A VCD protocol source plugin is required to play this stream, but not installed.
gstplaybasebin.
No URI handler for vcd
** Message: Missing plugin: gstreamer| 0.10|totem| VCD protocol source| urisource- vcd (ignoring)
** Message: All missing plugins are blacklisted, doing nothing
Hopefully this will help further