Final answer:
The best type of video to verify audio/video synchronization is a clapperboard or slate, which marks the synchronization point between audio and video in filmmaking.
Step-by-step explanation:
The best type of video to verify audio/video synchronization is a clapperboard or slate.
A clapperboard is a device used in filmmaking to mark the synchronization point between audio and video during editing. It contains a visual and audio cue, which helps to accurately align the sound with the corresponding footage. By using a clapperboard or slate, you can ensure that the audio and video remain in sync throughout the editing process.
Another type of video that can be used for this purpose is a close-up shot of a clock with a visible second hand. By matching the visual indication of the second hand with the audio cue, it is possible to verify the synchronization between the audio and video.