[YoutubeDL] Show download URL when -v is set

This will allow us to debug issues like #3204

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index dc0ba986a98744151cafd932acbcd6bbe33fb4a0..3dff723b81fff6947ac8cf08c62a275843f359f9 100755 (executable)
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -993,6 +993,8 @@ class YoutubeDL(object):
                         fd = get_suitable_downloader(info)(self, self.params)
                         for ph in self._progress_hooks:
                             fd.add_progress_hook(ph)
+                        if self.params.get('verbose'):
+                            self.to_stdout('[debug] Invoking downloader on %r' % info.get('url'))
                         return fd.download(name, info)
                     if info_dict.get('requested_formats') is not None:
                         downloaded = []