add yt-dlp notes

active/software_ytdlp/yt-dlp.md

@@ -0,0 +1,26 @@
+# YT DLP
+
+## Downloading Videos
+
+Download the best quality video:
+
+```bash
+yt-dlp -f "bv+ba/b" https://...
+```
+
+Download a playlist:
+
+```bash
+yt-dlp -f "bv+ba/b" --write-thumbnail 'https://www.youtube.com/watch?v=l-unefmAo9k&list=PLuYLhuXt4HrQqnfSceITmv6T_drx1hN84'
+```
+
+## Authentication
+
+To download age restricted videos:
+
+1. Log into youtube via chromium
+2. Pass `--cookies-from-browser chromium` as part of yt-dlp
+
+```bash
+yt-dlp -f "bv+ba/b" --write-thumbnail --cookies-from-browser chromium 'https://youtu.be/2YkEDGD_sDs?si=YQSfjv8Xhk23lvc3'
+```