Per comment #190 (comment)
It appears that there are differences in the output of the grab() function in frame_grabber and frame_grabber_node, which appear to be usually minor, but enough to make a difference between success and failure on fixtures/code_39/image_010.
In browser:

in node:

Per comment #190 (comment)
It appears that there are differences in the output of the grab() function in frame_grabber and frame_grabber_node, which appear to be usually minor, but enough to make a difference between success and failure on fixtures/code_39/image_010.
In browser:
in node: