urisourcebin/playbin3 : Providing extra information about URI
Submitted by Edward Hervey @bilboed
Link to original bug (#770368)
Description
+++ This bug was initially created as a clone of Bug 770331 +++
Since we can support multiple supplementary URI in playbin3, we need a way for the user to provide extra information about those URI such as:
- language,
- 3D positioning (in case of extra video streams),
- Audio positioning (in case of extra audio streams),
- and any other kind of meta-data
Furthermore, in order for the user to be able to properly correlate those extra URI to the GstStreams in messages/events, we might want to have a way to specify a stream-id for those extra URI.