Sophie

Sophie

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libgstreamer0.7-devel-0.7.4-2mdk.i586.rpm

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>28.3. Another approach to autoplugging</A
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>&#13;      The autoplug API is interesting, but often impractical. It is static;
      it cannot deal with dynamic pipelines. An element that will
      automatically figure out and decode the type is more useful.
      Enter the spider.
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>28.3.1. The spider element</A
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>&#13;        The spider element is a generalized autoplugging element. At this point (April 2002), it's
        the best we've got; it can be inserted anywhere within a pipeline to perform caps
        conversion, if possible. Consider the following gst-launch line:
        <PRE
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>&#13;          $ gst-launch filesrc location=my.mp3 ! spider ! osssink
        </PRE
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        The spider will detect the type of the stream, autoplug it to the osssink's caps, and play
        the pipeline. It's neat.
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>28.3.2. Spider features</A
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>&#13;        <P
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>&#13;              Automatically typefinds the incoming stream.
            </P
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>&#13;              Has request pads on the source side. This means that it can
              autoplug one source stream into many sink streams. For example,
              an MPEG1 system stream can have audio as well as video; that
              pipeline would be represented in gst-launch syntax as

              <PRE
CLASS="programlisting"
>&#13;                $ gst-launch filesrc location=my.mpeg1 ! spider ! { queue ! osssink } spider.src_%d!
                             { queue ! xvideosink }
              </PRE
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