[downloader:ytdl] provide 'filename' metadata (closes #291)

gallery_dl/downloader/ytdl.py

@@ -50,6 +50,8 @@ class YoutubeDLDownloader(DownloaderBase):
         return self._download_video(pathfmt, info_dict)
 
     def _download_video(self, pathfmt, info_dict):
+        if "url" in info_dict:
+            text.nameext_from_url(info_dict["url"], pathfmt.keywords)
         pathfmt.set_extension(info_dict["ext"])
         if pathfmt.exists():
             pathfmt.temppath = ""

gallery_dl/extractor/artstation.py

@@ -41,7 +41,6 @@ class ArtstationExtractor(Extractor):
                     player = adict["player_embedded"]
                     url = text.extract(player, 'src="', '"')[0]
                     if not url.startswith(self.root):
-                        text.nameext_from_url(url, asset)
                         yield Message.Url, "ytdl:" + url, asset
                         continue