Create a new pipeline based on command line syntax.
Please note that you might get a return value that is not NULL even though
the error is set. In this case there was a recoverable parsing error and you
can try to play the pipeline.
a new element on success, NULL on failure. If more than one toplevel element is specified by the pipeline_description, all elements are put into a GstPipeline, which than is returned.
Create a new pipeline based on command line syntax. Please note that you might get a return value that is not NULL even though the error is set. In this case there was a recoverable parsing error and you can try to play the pipeline.