command: rename/deprecate some conflicting property names

These conflict with options of the same name, and prevent a "full"
unification. Not addressed is the "cache" property, and possibly a few
properties that behave differently from their equivalent options.

DOCS/interface-changes.rst

@@ -27,6 +27,11 @@ Interface changes
       (Also see client API change for API version 1.23.)
     - add almost all options to the property list, meaning you can change
       options without adding "options/" to the property name
+    - rename the following properties
+        - "demuxer" -> "current-demuxer"
+        - "fps" -> "container-fps"
+        - "idle" -> "idle-active"
+      the old names are deprecated
  --- mpv 0.20.0 ---
     - add --image-display-duration option - this also means that image duration
       is not influenced by --mf-fps anymore in the general case (this is an

DOCS/man/input.rst

@@ -903,9 +903,11 @@ Property list
     list of format names, e.g. mp4 is ``mov,mp4,m4a,3gp,3g2,mj2`` (the list
     may grow in the future for any format).
 
-``demuxer``
+``current-demuxer``
     Name of the current demuxer. (This is useless.)
 
+    (Renamed from ``demuxer``.)
+
 ``stream-path``
     Filename (full path) of the stream layer filename. (This is probably
     useless. It looks like this can be different from ``path`` only when
@@ -1142,10 +1144,12 @@ Property list
 ``af-metadata/<filter-label>``
     Equivalent to ``vf-metadata/<filter-label>``, but for audio filters.
 
-``idle``
+``idle-active``
     Return ``yes`` if no file is loaded, but the player is staying around
     because of the ``--idle`` option.
 
+    (Renamed from ``idle``.)
+
 ``core-idle``
     Return ``yes`` if the playback core is paused, otherwise ``no``. This can
     be different ``pause`` in special situations, such as when the player
@@ -1467,10 +1471,12 @@ Property list
     ``video-frame-info/tff``
     ``video-frame-info/repeat``
 
-``fps``
+``container-fps``
     Container FPS. This can easily contain bogus values. For videos that use
     modern container formats or video codecs, this will often be incorrect.
 
+    (Renamed from ``fps``.)
+
 ``estimated-vf-fps``
     Estimated/measured FPS of the video filter chain output. (If no filters
     are used, this corresponds to decoder output.) This uses the average of

player/command.c

@@ -3730,7 +3730,9 @@ static const struct m_property mp_properties_base[] = {
     {"media-title", mp_property_media_title},
     {"stream-path", mp_property_stream_path},
     {"stream-capture", mp_property_stream_capture},
-    {"demuxer", mp_property_demuxer}, // conflicts with option
+    {"current-demuxer", mp_property_demuxer},
+    // conflicts with option
+    M_PROPERTY_DEPRECATED_ALIAS("demuxer", "current-demuxer"),
     {"file-format", mp_property_file_format},
     {"stream-pos", mp_property_stream_pos},
     {"stream-end", mp_property_stream_end},
@@ -3780,7 +3782,8 @@ static const struct m_property mp_properties_base[] = {
     {"clock", mp_property_clock},
     {"seekable", mp_property_seekable},
     {"partially-seekable", mp_property_partially_seekable},
-    {"idle", mp_property_idle}, // conflicts with option
+    {"idle-active", mp_property_idle},
+    M_PROPERTY_DEPRECATED_ALIAS("idle", "idle-active"), // conflicts with option
 
     {"chapter-list", mp_property_list_chapters},
     {"track-list", property_list_tracks},
@@ -3848,7 +3851,8 @@ static const struct m_property mp_properties_base[] = {
     {"vo-configured", mp_property_vo_configured},
     {"vo-performance", mp_property_vo_performance},
     {"current-vo", mp_property_vo},
-    {"fps", mp_property_fps}, // conflicts with option
+    {"container-fps", mp_property_fps},
+    M_PROPERTY_DEPRECATED_ALIAS("fps", "container-fps"), // conflicts with option
     {"estimated-vf-fps", mp_property_vf_fps},
     {"video-aspect", mp_property_aspect},
     {"vid", mp_property_video},