Recommended frame rates

Recommended Dolby AC-4 frame rates are listed in following table.

Highest video frame rate used (in fps) Recommended audio frame rates

(in fps, in the order of preference)

120 30, 24[a], 25[a]
119.88 29.97
100 25, 24[a]
60 30, 24[a], 25[a]
59.94 29.97
50 25, 24[a]
48 24, 25[a]
30

30, 24[a], 25[a]

29.97 29.97
25 25, 24[a]
24 24, 25[a]
23.976 23.44 (native)
[a] Recommended only if perfect alignment of audio and video segments can be achieved using the frame rate.