[Bug 692190] Encodebin should somehow let you know how many streams the container will accept

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=692190
  GStreamer | gst-plugins-base | 1.x

--- Comment #2 from Christian Fredrik Kalager Schaller <Uraeus at linuxrising.org> 2013-01-21 12:22:54 UTC ---
Not 100% what that call does, but it more seems to be a way to count the number
of times a given profile has been used, it let me know that the mp3 encoding
profile has been used 3 times. I guess I could infer the information by
assuming that if I have 2 incoming streams and the profile has only been used 1
time that the container doesn't support more than one stream, but this seems
more complicated than it needs to be and also at a quite late point in the
process.

I think what I am looking for is that as soon as the muxer profile has been
created/added to the encodebin then I should be able to query it for the
maximum permissible audio and video streams. So that the application has a
chance to let the user now that they for instance have to choose which audio
stream to keep and which ones to drop.

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