The current ports version of youtube-dl cannot handle vine anymore. Downloading a new version, 2016.07.09.2, works fine manually. However, when I update the port to use this version, it fails.
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/cliprs.py", line 4, in <module> from .onet import OnetBaseIE ImportError: No module named onet Don't know how to proceed.