Merge pull request #45 from lagmoellertim/pr-remove-short-intervals-f…

…rom-start

Removes too short intervals at the beginning

unsilence/lib/intervals/Intervals.py

@@ -83,6 +83,25 @@ def __enlarge_audible_intervals(self, stretch_time):
                 is_end_interval=(i == len(self.__interval_list) - 1)
             )
 
+    def remove_short_intervals_from_start(self, audible_speed=1, silent_speed=2):
+        """
+        Removes Intervals from start that are shorter than 0.5 seconds after
+        speedup to avoid having a final output without an audio track
+        :param audible_speed: The speed at which the audible intervals get played back at (float)
+        :param silent_speed: The speed at which the silent intervals get played back at (float)
+        :return: The new, possibly shorter, Intervals object
+        """
+        for i, interval in enumerate(self.__interval_list):
+            if interval.is_silent:
+                speed = silent_speed
+            else:
+                speed = audible_speed
+
+            if interval.duration / speed > 0.5:
+                return Intervals(self.__interval_list[i:])
+
+        raise Exception("No interval has a length over 0.5 seconds after speed changes! This is required.")
+
     def copy(self):
         """
         Creates a deep copy

unsilence/lib/render_media/MediaRenderer.py

@@ -61,6 +61,11 @@ def render(self, input_file: Path, output_file: Path, intervals: Intervals, **kw
             drop_corrupted_intervals=kwargs.get("drop_corrupted_intervals", False)
         )
 
+        intervals = intervals.remove_short_intervals_from_start(
+            render_options.audible_speed,
+            render_options.silent_speed
+        )
+
         video_temp_path = self.__temp_path / str(uuid.uuid4())
         video_temp_path.mkdir(parents=True)