From 2a2516bff91e3be63f9ef0f59751fc0dda20f6c6 Mon Sep 17 00:00:00 2001
From: j <j@mailb.org>
Date: Tue, 3 Dec 2024 19:35:37 +0000
Subject: [PATCH] pad audio tracks to scene duration

---
 render.py | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/render.py b/render.py
index 4cb2c4a..97d412a 100644
--- a/render.py
+++ b/render.py
@@ -66,6 +66,7 @@ def write_if_new(path, data, mode=''):
 
 
 def compose(clips, target=150, base=1024, voice_over=None):
+    fps = 24
     length = 0
     scene = {
         'front': {
@@ -100,6 +101,7 @@ def compose(clips, target=150, base=1024, voice_over=None):
     used = []
 
     voice_overs = []
+    sub_offset = 0
     if voice_over:
         vo_keys = list(sorted(voice_over))
         if chance(seq, 0.5):
@@ -118,7 +120,7 @@ def compose(clips, target=150, base=1024, voice_over=None):
         if vo_min > target:
             target = vo_min
         elif vo_min < target:
-            offset = (target - vo_min) / 2
+            offset = int(((target - vo_min) / 2) * fps) / fps
             scene['audio-center']['A1'].append({
                 'blank': True,
                 'duration': offset
@@ -298,6 +300,16 @@ def compose(clips, target=150, base=1024, voice_over=None):
         })
         used.append(clip)
     print("scene duration %0.3f (target: %0.3f, vo_min: %0.3f)" % (length, target, vo_min))
+    if sub_offset < length:
+        delta = length - sub_offset
+        scene['audio-center']['A1'].append({
+            'blank': True,
+            'duration': delta
+        })
+        scene['audio-rear']['A1'].append({
+            'blank': True,
+            'duration': delta
+        })
     return scene, used
 
 def get_scene_duration(scene):
@@ -321,7 +333,7 @@ def get_offset_duration(prefix):
 def render(root, scene, prefix=''):
     fps = 24
     files = []
-    scene_duration = int(get_scene_duration(scene) * 24)
+    scene_duration = int(get_scene_duration(scene) * fps)
     for timeline, data in scene.items():
         if timeline == "subtitles":
             path = os.path.join(root, prefix + "front.srt")
@@ -338,14 +350,14 @@ def render(root, scene, prefix=''):
             #print(track)
             for clip in clips:
                 project.append_clip(track, clip)
-            track_durations[track] = int(sum([c['duration'] for c in clips]) * 24)
+            track_durations[track] = int(sum([c['duration'] for c in clips]) * fps)
         if timeline.startswith('audio-'):
             track_duration = project.get_duration()
             delta = scene_duration - track_duration
             if delta > 0:
                 for track in track_durations:
                     if track_durations[track] == track_duration:
-                        project.append_clip(track, {'blank': True, "duration": delta/24})
+                        project.append_clip(track, {'blank': True, "duration": delta/fps})
                         break
         path = os.path.join(root, prefix + "%s.kdenlive" % timeline)
         project_xml = project.to_xml()