+ filename = os.path.basename(location)
+ basename = next((p for p in programs if p in filename), 'ffmpeg')
+ dirname = os.path.dirname(os.path.abspath(location))
+ if basename in self._ffmpeg_to_avconv:
+ self._prefer_ffmpeg = True
+
+ paths = {p: os.path.join(dirname, p) for p in programs}
+ if basename and basename in filename:
+ for p in programs:
+ path = os.path.join(dirname, filename.replace(basename, p))
+ if os.path.exists(path):
+ paths[p] = path
+ if basename:
+ paths[basename] = location
+ return paths
+
+ _version_cache, _features_cache = {None: None}, {}
+
+ def _get_ffmpeg_version(self, prog):
+ path = self._paths.get(prog)
+ if path in self._version_cache:
+ return self._version_cache[path], self._features_cache.get(path, {})
+ out = _get_exe_version_output(path, ['-bsfs'])
+ ver = detect_exe_version(out) if out else False
+ if ver:
+ regexs = [
+ r'(?:\d+:)?([0-9.]+)-[0-9]+ubuntu[0-9.]+$', # Ubuntu, see [1]
+ r'n([0-9.]+)$', # Arch Linux
+ # 1. http://www.ducea.com/2006/06/17/ubuntu-package-version-naming-explanation/
+ ]
+ for regex in regexs:
+ mobj = re.match(regex, ver)
+ if mobj:
+ ver = mobj.group(1)
+ self._version_cache[path] = ver
+ if prog != 'ffmpeg' or not out:
+ return ver, {}
+
+ mobj = re.search(r'(?m)^\s+libavformat\s+(?:[0-9. ]+)\s+/\s+(?P<runtime>[0-9. ]+)', out)
+ lavf_runtime_version = mobj.group('runtime').replace(' ', '') if mobj else None
+ self._features_cache[path] = features = {
+ 'fdk': '--enable-libfdk-aac' in out,
+ 'setts': 'setts' in out.splitlines(),
+ 'needs_adtstoasc': is_outdated_version(lavf_runtime_version, '57.56.100', False),
+ }
+ return ver, features
+
+ @property
+ def _versions(self):
+ return filter_dict({self.basename: self._version, self.probe_basename: self._probe_version})
+
+ @functools.cached_property
+ def basename(self):
+ _ = self._version # run property
+ return self.basename
+
+ @functools.cached_property
+ def probe_basename(self):
+ _ = self._probe_version # run property
+ return self.probe_basename
+
+ def _get_version(self, kind):
+ executables = (kind, )
+ if not self._prefer_ffmpeg:
+ executables = (kind, self._ffmpeg_to_avconv[kind])
+ basename, version, features = next(filter(
+ lambda x: x[1], ((p, *self._get_ffmpeg_version(p)) for p in executables)), (None, None, {}))
+ if kind == 'ffmpeg':
+ self.basename, self._features = basename, features