/** @return number of audio channels in the content */
virtual int audio_channels () const = 0;
/** @return the length of the audio in the content */
- virtual ContentTime audio_length () const = 0;
+ virtual Frame audio_length () const = 0;
/** @return the frame rate of the content */
virtual int audio_frame_rate () const = 0;
virtual AudioMapping audio_mapping () const = 0;