Make ffmpeg_bin specification a piece of file_writer_config

manimlib/constants.py

@@ -66,8 +66,6 @@ DEGREES: float = TAU / 360
 # when juxtaposed with expressions like 30 * DEGREES
 RADIANS: float = 1
 
-FFMPEG_BIN: str = GLOBAL_CONFIG["ffmpeg_bin"]
-
 JOINT_TYPE_MAP: dict = {
     "no_joint": 0,
     "auto": 1,

manimlib/default_config.yml

@@ -49,6 +49,9 @@ file_writer:
   # easier when working with the broken up scene, which
   # effectively has cuts at all the places you might want.
   break_into_partial_movies: False
+  # What command to use for ffmpeg
+  ffmpeg_bin: "ffmpeg"
+  # Parameters to pass into ffmpeg
   video_codec: "libx264"
   pixel_format: "yuv420p"
   saturation: 1.0
@@ -144,7 +147,5 @@ colors:
   light_pink: "#DC75CD"
   green_screen: "#00FF00"
   orange: "#FF862F"
-# What command to use for ffmpeg
-ffmpeg_bin: "ffmpeg"
 universal_import_line: "from manimlib import *"
 ignore_manimlib_modules_on_reload: True

manimlib/scene/scene_file_writer.py

@@ -11,7 +11,6 @@ from pydub import AudioSegment
 from tqdm.auto import tqdm as ProgressDisplay
 from pathlib import Path
 
-from manimlib.constants import FFMPEG_BIN
 from manimlib.logger import log
 from manimlib.mobject.mobject import Mobject
 from manimlib.utils.file_ops import add_extension_if_not_present
@@ -49,6 +48,8 @@ class SceneFileWriter(object):
         quiet: bool = False,
         total_frames: int = 0,
         progress_description_len: int = 40,
+        # Name of the binary used for ffmpeg
+        ffmpeg_bin: str = "ffmpeg",
         video_codec: str = "libx264",
         pixel_format: str = "yuv420p",
         saturation: float = 1.0,
@@ -70,6 +71,7 @@ class SceneFileWriter(object):
         self.quiet = quiet
         self.total_frames = total_frames
         self.progress_description_len = progress_description_len
+        self.ffmpeg_bin = ffmpeg_bin
         self.video_codec = video_codec
         self.pixel_format = pixel_format
         self.saturation = saturation
@@ -236,7 +238,7 @@ class SceneFileWriter(object):
         vf_arg += f',eq=saturation={self.saturation}:gamma={self.gamma}'
 
         command = [
-            FFMPEG_BIN,
+            self.ffmpeg_bin,
             '-y',  # overwrite output file if it exists
             '-f', 'rawvideo',
             '-s', f'{width}x{height}',  # size of one frame
@@ -358,7 +360,7 @@ class SceneFileWriter(object):
 
         movie_file_path = self.get_movie_file_path()
         commands = [
-            FFMPEG_BIN,
+            self.ffmpeg_bin,
             '-y',  # overwrite output file if it exists
             '-f', 'concat',
             '-safe', '0',
@@ -385,7 +387,7 @@ class SceneFileWriter(object):
         )
         temp_file_path = stem + "_temp" + ext
         commands = [
-            FFMPEG_BIN,
+            self.ffmpeg_bin,
             "-i", movie_file_path,
             "-i", sound_file_path,
             '-y',  # overwrite output file if it exists