- FrameRateConversion frc (video_frame_rate(), film->video_frame_rate ());
- return video_length() * frc.factor() * TIME_HZ / video_frame_rate();
+ FrameRateChange frc (video_frame_rate(), film->video_frame_rate ());
+ return video_length_after_3d_combine() * frc.factor() * TIME_HZ / video_frame_rate();