Trying to run a non-installed command (such as avprobe) through Popen may throw other errors than `OSError`. For example, a `ValueError` may happen on macOS 10.12.6:
```
$ ./youtube-dl -U -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-U', u'-v']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.06.25
[debug] Python version 2.7.10 (CPython) - Darwin-16.7.0-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 "./youtube-dl/__main__.py", line 19, in <module>
File "./youtube-dl/youtube_dl/__init__.py", line 472, in main
File "./youtube-dl/youtube_dl/__init__.py", line 439, in _real_main
File "./youtube-dl/youtube_dl/YoutubeDL.py", line 417, in __init__
File "./youtube-dl/youtube_dl/YoutubeDL.py", line 2260, in print_debug_header
File "./youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 76, in get_versions
File "./youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 60, in __init__
File "./youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 117, in _determine_executables
File "./youtube-dl/youtube_dl/postprocessor/ffmpeg.py", line 117, in <genexpr>
File "./youtube-dl/youtube_dl/utils.py", line 1962, 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
```
Catching all errors instead of only `OSError` should be safer.
Playlist loading initialize the 'platform' cookie on the domain '.pornhub.com' (with initial dot)
This messes up with the loading of the tv_webpage that specifies another value for the 'platform' cookie but on the 'pornhub.com' domain (no initial dot)
Fix is to clear the .pornhub.com domain cookies
Useful when some non-success (2xx) HTTP status codes should be considered normal. Previously this required to manually catch corresponding exceptions and read the response.
- add support for audio and live streams(closes#11923)(closes#9638)
- extract HLS, DASH and all HTTP formats
- extract subtitles
- fixup specific http urls(fixes#16101)
It makes it easier to debug in case of problems and it also
makes the code much easier to read since the three distinct
things done are now explicit separated as three statements.
