Untimed voice over
Untimed voiceover audio may be a preferable choice. For starters, not changing the translated script for timing can improve localization accuracy. Second, untimed audio is usually less expensive because it may be completed in one or two takes and doesn’t take up too much of the voiceover talent’s valuable studio time. Finally, untimed audio can be recorded at a natural pace.
The issue with untimed audio is that its length does not necessarily correspond to video length. To make it match, either the audio or the video, or both, must be altered. These are not simple editing operations; they take time and need technical knowledge, resulting in expenses that may be greater than timed audio.