python-codecs: update requirements.txt

plugins/python-codecs/package-lock.json

@@ -1,12 +1,12 @@
 {
    "name": "@scrypted/python-codecs",
-   "version": "0.1.21",
+   "version": "0.1.22",
    "lockfileVersion": 3,
    "requires": true,
    "packages": {
       "": {
          "name": "@scrypted/python-codecs",
-         "version": "0.1.21",
+         "version": "0.1.22",
          "devDependencies": {
             "@scrypted/sdk": "file:../../sdk"
          }

plugins/python-codecs/package.json

@@ -1,6 +1,6 @@
 {
    "name": "@scrypted/python-codecs",
-   "version": "0.1.21",
+   "version": "0.1.22",
    "description": "Python Codecs for Scrypted",
    "keywords": [
       "scrypted",

plugins/python-codecs/src/requirements.txt

@@ -1,7 +1,11 @@
-# plugin
+# gobject instrospection for gstreamer.
 PyGObject>=3.30.4; sys_platform != 'win32'
+
 # libav doesnt work on arm7
 av>=10.0.0; sys_platform != 'linux' or platform_machine == 'x86_64' or platform_machine == 'aarch64'
+
+# pyvips is not available on windows, and is preinstalled as part of the installer scripts on
+# mac and linux.
 pyvips; sys_platform != 'win32'
 
 # in case pyvips fails to load, use a pillow fallback.