| 摘要 |
According to an embodiment of the present invention, a method for producing a video file including a non-audible sound may include the following steps: receiving an input of a video file including a video track and a main audio track; and in the case that the video file includes a first sub-audio track which has the same sound data as at least a part of sound data in the main audio track, mixing non-audible sound with the sound data of the main audio track or the first sub-audio track. |
