#31 Features from animelover1984/youtube-dl

* Add `--get-comments`
* [youtube] Extract comments
* [billibilli] Added BiliBiliSearchIE, BilibiliChannelIE
* [billibilli] Extract comments
* [billibilli] Better video extraction
* Write playlist data to infojson
* [FFmpegMetadata] Embed infojson inside the video
* [EmbedThumbnail] Try embedding in mp4 using ffprobe and `-disposition`
* [EmbedThumbnail] Treat mka like mkv and mov like mp4
* [EmbedThumbnail] Embed in ogg/opus
* [VideoRemuxer] Conditionally remux video
* [VideoRemuxer] Add `-movflags +faststart` when remuxing from mp4
* [ffmpeg] Print entire stderr in verbose when there is error
* [EmbedSubtitle] Warn when embedding ass in mp4
* [avanto] Use NFLTokenGenerator if possible

youtube_dlc/utils.py

@@ -5934,3 +5934,14 @@ def load_plugins(name, type, namespace):
         if plugin_info[0] is not None:
             plugin_info[0].close()
     return classes
+
+
+def traverse_dict(dictn, keys, casesense=True):
+    if not isinstance(dictn, dict):
+        return None
+    first_key = keys[0]
+    if not casesense:
+        dictn = {key.lower(): val for key, val in dictn.items()}
+        first_key = first_key.lower()
+    value = dictn.get(first_key, None)
+    return value if len(keys) < 2 else traverse_dict(value, keys[1:], casesense)