How to synchronize video to the beat of music (automatically)?

Question

Video processing

How to synchronize video to the beat of music?
I tried to do it manually in Sony Vegas, adjusting to the audio track - this is a long and tedious job.
Are there programs or services that can do this automatically?
After all, even in ordinary players, light music and jump ropes work automatically to the beat of the music.

Answer 1

1. You measure the tempo of the audio track, then you get 60*4/tempo = bar length in seconds.
   It seems to me problematic to automate the second step, I don’t think that such services exist. But there is no problem counting.