[downloader/hls] Fix detection of ffmpeg/avconv (reported in #4966)

diff --git a/youtube_dl/downloader/hls.py b/youtube_dl/downloader/hls.py
index 8be4f424907e55adfac91af5eb587b62b54b8487..3650d715ee2672bc6bd12090fd580cf8095789f7 100644 (file)
--- a/youtube_dl/downloader/hls.py
+++ b/youtube_dl/downloader/hls.py
@@ -23,7 +23,7 @@ class HlsFD(FileDownloader):
         tmpfilename = self.temp_name(filename)
 
         ffpp = FFmpegPostProcessor(downloader=self)
-        if not ffpp.available:
+        if not ffpp.available():
             self.report_error('m3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
             return False
         ffpp.check_version()