Create a node chain from an unparsed commandline string.
| ops |
an argv style, NULL terminated array of arguments |
| op_start |
node to pass in as input of chain |
| op_end |
node to get processed data |
| time |
the time to use for interpolatino of keyframed values |
| rel_dim |
relative dimension to scale rel suffixed values by |
| path_root |
path in filesystem to use as relative root |