Download from Youtube doesn't work

[andyzasl]

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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youtube-dl -v https://www.youtube.com/watch\?\v=KFLxnZzuykg [debug] System config: [] [debug] User config: [] [debug] Command-line args: [u'-v', u'https://www.youtube.com/watch?v=KFLxnZzuykg'] [debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8 [debug] youtube-dl version 2016.06.03 [debug] Python version 2.7.10 - Darwin-15.5.0-x86_64-i386-64bit Traceback (most recent call last): File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 162, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/local/bin/youtube-dl/__main__.py", line 19, in <module> File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 421, in main File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 388, in _real_main File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 352, in __init__ File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1987, in print_debug_header File "/usr/local/bin/youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 64, in get_versions File "/usr/local/bin/youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 48, in __init__ File "/usr/local/bin/youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 105, in _determine_executables File "/usr/local/bin/youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 105, in <genexpr> File "/usr/local/bin/youtube-dl/youtube_dl/utils.py", line 1701, in get_exe_version File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__ errread, errwrite) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1334, in _execute_child child_exception = pickle.loads(data) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 1382, in loads return Unpickler(file).load() File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 858, in load dispatch[key](self) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pickle.py", line 966, in load_string raise ValueError, "insecure string pickle" ValueError: insecure string pickle

[yan12125]

Duplicate of #6840. It's a Python 2 bug. Use Python 3 instead.