null-terminated array of arguments
a parse context allocated with gst_parse_context_new(), or %NULL
parsing options, or #GST_PARSE_FLAG_NONE
a new element on success; on failure, either %NULL or a partially-constructed bin or element will be returned and @error will be set (unless you passed #GST_PARSE_FLAG_FATAL_ERRORS in @flags, then %NULL will always be returned on failure)
GException on failure.
Create a new element based on command line syntax. @error will contain an error message if an erroneous pipeline is specified. An error does not mean that the pipeline could not be constructed.