[instagram] add 'warn-images' & 'warn-videos' options (#8283)

docs/configuration.rst

@@ -3428,6 +3428,39 @@ Description
         Do not download videos
 
 
+extractor.instagram.warn-images
+-------------------------------
+Type
+    * ``bool``
+    * ``string``
+Default
+    ``true``
+Description
+    Show a warning when downloading images
+    with a resolution smaller than the `original`.
+
+    ``true``
+        Show a warning when at least one dimension
+        is smaller than the reported `original` resolution
+    ``"all"`` | ``"both"``
+        Show a warning only when both ``width`` and ``height``
+        are smaller than the reported `original` resolution
+    ``false``
+        Do not show a warning
+
+
+extractor.instagram.warn-videos
+-------------------------------
+Type
+    ``bool``
+Default
+    ``true``
+Description
+    Show a warning when downloading videos with a
+    `User-Agent <extractor.*.user-agent_>`__
+    header causing potentially lowered video quality.
+
+
 extractor.instagram.stories.split
 ---------------------------------
 Type

docs/gallery-dl.conf

@@ -455,6 +455,8 @@
             "order-posts": "asc",
             "previews"   : false,
             "videos"     : true,
+            "warn-images": true,
+            "warn-videos": true,
 
             "stories": {
                 "split": false