diff --git a/render_utils.py b/render_utils.py
index dbe706e..1bde2b8 100644
--- a/render_utils.py
+++ b/render_utils.py
@@ -1,10 +1,11 @@
 import re
 import os
 
-import ox
 import lxml.etree
+import ox
 
 from .render_kdenlive import melt_xml
+from .utils import format_duration
 
 
 def parse_lang(lang):
@@ -57,16 +58,20 @@ def get_clip_by_seqid(clips, seqid):
     return None
 
 
-def get_scene_duration(scene):
+def get_scene_duration(scene, fps=24, track=None):
     if isinstance(scene, str):
         with open(scene) as fd:
             scene = json.load(fd)
     duration = 0
     for key, value in scene.items():
         for name, clips in value.items():
-            for clip in clips:
-                duration += int(clip["duration"] * 24)
-            return duration / 24
+            if track and '%s:%s' % (key, name) != track:
+                continue
+            if clips:
+                for clip in clips:
+                    duration += round(clip["duration"] * fps)
+                #print("scene duration based on %s:%s is %s %s" % (key, name, duration / fps, format_duration(duration / fps, fps)))
+                return duration / fps
 
 
 def get_offset_duration(prefix):
@@ -183,6 +188,7 @@ Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour,
         stop = ass_timestamp(sub["out"])
         for lang in reversed(langs):
             value = sub["values"][lang]
+            value = value.replace('\n', '\\N')
             event = f"Dialogue: 0,{start},{stop},{lang},,0,0,0,,{value}"
             events.append(event)
     ass += "\n\n[Events]\n" + "\n".join(events) + "\n"