Reformatting the --save_sections output to have the format <Scene>_<SecNum>_<SecName><extension> (#3499)

* Worked on issue 3471, fixing rendered file names to inherit section name

* Modified file name to include section number and name

* Modified tests for file names to include number and name, in order to pass

---------

Co-authored-by: Tristan Schulz <[email protected]>

Author: doaamuham

manim/scene/scene_file_writer.py

@@ -191,7 +191,7 @@ def next_section(self, name: str, type: str, skip_animations: bool) -> None:
             and not skip_animations
         ):
             # relative to index file
-            section_video = f"{self.output_name}_{len(self.sections):04}{config.movie_file_extension}"
+            section_video = f"{self.output_name}_{len(self.sections):04}_{name}{config.movie_file_extension}"
 
         self.sections.append(
             Section(

tests/control_data/videos_data/SceneWithEnabledSections.json

@@ -10,14 +10,14 @@
     },
     "section_dir_layout": [
         "SquareToCircle.json",
-        "SquareToCircle_0000.mp4",
+        "SquareToCircle_0000_autocreated.mp4",
         "."
     ],
     "section_index": [
         {
             "name": "autocreated",
             "type": "default.normal",
-            "video": "SquareToCircle_0000.mp4",
+            "video": "SquareToCircle_0000_autocreated.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,

tests/control_data/videos_data/SceneWithSections.json

@@ -10,18 +10,18 @@
     },
     "section_dir_layout": [
         "SceneWithSections.json",
-        "SceneWithSections_0004.mp4",
-        "SceneWithSections_0003.mp4",
-        "SceneWithSections_0002.mp4",
-        "SceneWithSections_0001.mp4",
-        "SceneWithSections_0000.mp4",
+        "SceneWithSections_0004_unnamed.mp4",
+        "SceneWithSections_0003_Prepare For Unforeseen Consequences..mp4",
+        "SceneWithSections_0002_test.mp4",
+        "SceneWithSections_0001_unnamed.mp4",
+        "SceneWithSections_0000_autocreated.mp4",
         "."
     ],
     "section_index": [
         {
             "name": "autocreated",
             "type": "default.normal",
-            "video": "SceneWithSections_0000.mp4",
+            "video": "SceneWithSections_0000_autocreated.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -32,7 +32,7 @@
         {
             "name": "unnamed",
             "type": "default.normal",
-            "video": "SceneWithSections_0001.mp4",
+            "video": "SceneWithSections_0001_unnamed.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -43,7 +43,7 @@
         {
             "name": "test",
             "type": "default.normal",
-            "video": "SceneWithSections_0002.mp4",
+            "video": "SceneWithSections_0002_test.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -54,7 +54,7 @@
         {
             "name": "Prepare For Unforeseen Consequences.",
             "type": "default.normal",
-            "video": "SceneWithSections_0003.mp4",
+            "video": "SceneWithSections_0003_Prepare For Unforeseen Consequences..mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -65,7 +65,7 @@
         {
             "name": "unnamed",
             "type": "presentation.skip",
-            "video": "SceneWithSections_0004.mp4",
+            "video": "SceneWithSections_0004_unnamed.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,

tests/control_data/videos_data/SceneWithSkipAnimations.json

@@ -10,16 +10,16 @@
     },
     "section_dir_layout": [
         "ElaborateSceneWithSections.json",
-        "ElaborateSceneWithSections_0003.mp4",
-        "ElaborateSceneWithSections_0001.mp4",
-        "ElaborateSceneWithSections_0000.mp4",
+        "ElaborateSceneWithSections_0003_fade out.mp4",
+        "ElaborateSceneWithSections_0001_transform to circle.mp4",
+        "ElaborateSceneWithSections_0000_create square.mp4",
         "."
     ],
     "section_index": [
         {
             "name": "create square",
             "type": "default.normal",
-            "video": "ElaborateSceneWithSections_0000.mp4",
+            "video": "ElaborateSceneWithSections_0000_create square.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -30,7 +30,7 @@
         {
             "name": "transform to circle",
             "type": "default.normal",
-            "video": "ElaborateSceneWithSections_0001.mp4",
+            "video": "ElaborateSceneWithSections_0001_transform to circle.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,
@@ -41,7 +41,7 @@
         {
             "name": "fade out",
             "type": "default.normal",
-            "video": "ElaborateSceneWithSections_0003.mp4",
+            "video": "ElaborateSceneWithSections_0003_fade out.mp4",
             "codec_name": "h264",
             "width": 854,
             "height": 480,