How gstreamer play audio and video file

[Ravikumar B]

Dear Team.,

    I am new to gstreamer. Previously i was worked bootolader and Linux
device drivers.. Recently i moved to gstreamer work.
I want to know following things about gstreamer.
   -> how gstreamer will communicate with Linux low level multimedia
framework.
   -> when i was worked previous, i heard pulse audio and alsa and OSS.
      * How gstreamer play  audio and video / camera files with hardware.. *
       ex: gst-launch playbin2 uri=file:///xxxx.vob
       I have understand gstreamer API's for playing multimedia files..
       But i am intersted to learn lowlevel communication with gstreamer.

       Can anyone please clarify my Querries..



-- 
...with regards
    ravikumar
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