UI: Add Presets for high framerate video

It is quite common to high framerate video with modern cameras. To make
it easier to edit this footage new framerate presets are added and the
soft limit increased.

Note there is a bug with preset ordering, Blender thinks "120" goes
before "24" this bug needs to be fixed before these changes can be
merged.

Differential Revision: https://developer.blender.org/D10553

release/scripts/presets/framerate/120.py

@@ -0,0 +1,3 @@
+import bpy
+bpy.context.scene.render.fps = 120
+bpy.context.scene.render.fps_base = 1

release/scripts/presets/framerate/240.py

@@ -0,0 +1,3 @@
+import bpy
+bpy.context.scene.render.fps = 240
+bpy.context.scene.render.fps_base = 1

release/scripts/startup/bl_ui/properties_output.py

@@ -80,7 +80,7 @@ class RENDER_PT_dimensions(RenderOutputButtonsPanel, Panel):
             fps_rate = round(fps / fps_base, 2)
 
         # TODO: Change the following to iterate over existing presets
-        custom_framerate = (fps_rate not in {23.98, 24, 25, 29.97, 30, 50, 59.94, 60})
+        custom_framerate = (fps_rate not in {23.98, 24, 25, 29.97, 30, 50, 59.94, 60, 120, 240})
 
         if custom_framerate is True:
             fps_label_text = tip_("Custom (%.4g fps)") % fps_rate

source/blender/makesrna/intern/rna_scene.c

@@ -5977,7 +5977,7 @@ static void rna_def_scene_render_data(BlenderRNA *brna)
   RNA_def_property_int_sdna(prop, NULL, "frs_sec");
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_range(prop, 1, SHRT_MAX);
-  RNA_def_property_ui_range(prop, 1, 120, 1, -1);
+  RNA_def_property_ui_range(prop, 1, 240, 1, -1);
   RNA_def_property_ui_text(prop, "FPS", "Framerate, expressed in frames per second");
   RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, "rna_Scene_fps_update");