def _load_timestamps(self):
        """Load timestamps from file."""
        timestamp_file = os.path.join(self.sequence_path, 'times.txt')

        # Read and parse the timestamps
        self.timestamps = []
        with open(timestamp_file, 'r') as f:
            for line in f.readlines():
                t = dt.timedelta(seconds=float(line))
                self.timestamps.append(t)

        # Subselect the chosen range of frames, if any
        if self.frames is not None:
            self.timestamps = [self.timestamps[i] for i in self.frames]
Load timestamps from file.