The frames are in either DPX or TIFF format and both sound and picture are not yet wrapped into MXF files.

所有的帧要么是DPX，要么是TIFF格式，声音和图像还都不能被包裹进MXF文件。

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Depending on phonetics, it takes one or two frames to form certain letters before sound is spelled.

基于各个语音，这个嘴唇的运动一般需要两帧去做出需要发音字母的嘴型。

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Films began projecting (and capturing) at 24 frames per second upon the introduction of sound.

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But, starting in the nineteen-thirties, music soundtracks were added to silents, and the films needed to move through the projector at twenty-four frames a second, so that the optical sound reader could handle the music track.

NEWYORKER: The Artists