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This seems to produce sporadic errors when trying to access the URL, because on python 3.x when you do '%s' % b'somedata' you get "b'somedata'".
Some playlist extractors return a 'url' result, which wouldn't be resolved.
Some of the streams are encrypted, which is not supported .
Stitcher review updates Removed re import Stitcher review updates
[vimeo] Fix error parsing
[vidme] Stream URL fallback, better error message for suspended videos
[zdf] Extract thumbnails
[Letv] Fix extraction