- FrameRateChange const frc (active_video_frame_rate(film), film->video_frame_rate());
- return DCPTime::from_frames (llrint (_length * frc.factor()), film->video_frame_rate());
+ FrameRateChange const frc (film, shared_from_this());
+ return DCPTime::from_frames (llrint(atmos->length() * frc.factor()), film->video_frame_rate());
+}
+
+
+DCPTime
+AtmosMXFContent::approximate_length () const
+{
+ return DCPTime::from_frames (atmos->length(), 24);