Disable STDIN interaction for ffmpeg concat. (#1010)

Aathish04 · web-flow · commit f563c8f8d448 · 2021-02-08T00:10:11.000+05:30
Prevent FFMPEG from interacting with STDIN (when running the concat command) and therefore prevent the command from freezing if `manim` is run from another python script.
diff --git a/manim/scene/scene_file_writer.py b/manim/scene/scene_file_writer.py
@@ -445,6 +445,7 @@ def combine_movie_files(self):
             file_list,
             "-loglevel",
             config["ffmpeg_loglevel"].lower(),
+            "-nostdin",
         ]
 
         if config["write_to_movie"] and not config["save_as_gif"]:

Original file line number	Diff line number	Diff line change
`@@ -445,6 +445,7 @@ def combine_movie_files(self):`
`445`	`445`	`file_list,`
`446`	`446`	`"-loglevel",`
`447`	`447`	`config["ffmpeg_loglevel"].lower(),`
	`448`	`+ "-nostdin",`
`448`	`449`	`]`
`449`	`450`
`450`	`451`	`if config["write_to_movie"] and not config["save_as_gif"]:`