Fix T65398 - Fix frame rate base use in Python SMPTE functions

Differential Revision: https://developer.blender.org/D5064

Reviewed By: brecht

release/scripts/modules/bpy/utils/__init__.py

@@ -450,12 +450,12 @@ def preset_paths(subdir):
     return dirs
 
 
-def smpte_from_seconds(time, fps=None):
+def smpte_from_seconds(time, fps=None, fps_base=None):
     """
     Returns an SMPTE formatted string from the *time*:
     ``HH:MM:SS:FF``.
 
-    If the *fps* is not given the current scene is used.
+    If *fps* and *fps_base* are not given the current scene is used.
 
     :arg time: time in seconds.
     :type time: int, float or ``datetime.timedelta``.
@@ -463,7 +463,11 @@ def smpte_from_seconds(time, fps=None):
     :rtype: string
     """
 
-    return smpte_from_frame(time_to_frame(time, fps=fps), fps)
+    return smpte_from_frame(
+        time_to_frame(time, fps=fps, fps_base=fps_base),
+        fps=fps,
+        fps_base=fps_base
+    )
 
 
 def smpte_from_frame(frame, fps=None, fps_base=None):
@@ -485,8 +489,9 @@ def smpte_from_frame(frame, fps=None, fps_base=None):
     if fps_base is None:
         fps_base = _bpy.context.scene.render.fps_base
 
+    fps = fps / fps_base
     sign = "-" if frame < 0 else ""
-    frame = abs(frame * fps_base)
+    frame = abs(frame)
 
     return (
         "%s%02d:%02d:%02d:%02d" % (
@@ -516,9 +521,11 @@ def time_from_frame(frame, fps=None, fps_base=None):
     if fps_base is None:
         fps_base = _bpy.context.scene.render.fps_base
 
+    fps = fps / fps_base
+
     from datetime import timedelta
 
-    return timedelta(0, (frame * fps_base) / fps)
+    return timedelta(0, frame / fps)
 
 
 def time_to_frame(time, fps=None, fps_base=None):
@@ -540,12 +547,14 @@ def time_to_frame(time, fps=None, fps_base=None):
     if fps_base is None:
         fps_base = _bpy.context.scene.render.fps_base
 
+    fps = fps / fps_base
+
     from datetime import timedelta
 
     if isinstance(time, timedelta):
         time = time.total_seconds()
 
-    return (time / fps_base) * fps
+    return time * fps
 
 
 def preset_find(name, preset_path, display_name=False, ext=".py"):