Synchronize Audio to Align Events not working.

Alok-Sharma wrote on 6/2/2021, 7:29 AM

Hi,

Software version: 17, trial

I have two videos shot using different angles. I dragged them both on the timeline, selected all the events and clicked Tools > Multicamera > Synchronize Audio to Align Events.

The software analyses the audio and then no changes happen. All the events remain at their default position.

Prior to trying Vegas Pro & now Vegas Movie Studio Platinum, I did try VideoStudio Pro for a few days, and it used to synchronize the events automatically using audio. But don't why it is not happening in Vegas.

In both the videos, the common synchronization point is the clap.

I did watch a few video tutorials on the internet, some people did it using the automatic method while the rest of the people did it manually. I also tried doing it manually but couldn't get the correct precision.

P.S. Before settling down with Vegas, just like every new beginner, I have tried a bunch of other products also.

Comments

anthony-chiappette wrote on 6/2/2021, 6:37 PM

I do this manually all the time. I always shoot 2 angles and bring each video onto it's own timeline. I stretch the timeline out to where I can see the same audio nuances and drag one or the other.

I put the cursor at the exact beginning of one of the audio peaks, then drag the other one to the same audio peak point. When you stretch the time line by a large amount, it's very easy to do and only takes a couple of seconds. I am using the exact model for both cameras, and my audio never goes out of sync. Once I have synced the audio, I group all of the audio and video tracks so they all move together.

I pan one audio track hard left and the other hard right to create an ambience to the audio track, since both cameras are recording the same audio from different vantage points.

Hint: Turn off "Quantize to Frames" so you can freely move the tracks back and forth. It's almost impossible to get true sync with "Quantize to Frames" turned on. With the timeline stretched out, it's easier to get each audio track aligned perfectly.

Former user wrote on 6/2/2021, 6:57 PM

If you are moving video with your audio to sync, you should not turn off Quantize to Frames, in fact, there is never a reason to turn it off when working with video. Turning it off with video could cause unwanted flash frames and black frames.

Alok-Sharma wrote on 6/3/2021, 1:25 AM

Thank you @anthony-chiappette, I will try out your method to see what best I can achieve.

As regards to the "Quantize to Frames", I am hearing this option for the 1st time, so I am unaware of it's functioning. I will read more about it in the knowledge base or internet.

@Former user, what you pointed out, I will try it with both on and off. That is the only way I would figure out what exactly happens.

But out of desperation & curiosity, I am curious to know why "Synchronize Audio to Align Events" is not working.

anthony-chiappette wrote on 6/3/2021, 11:44 AM

If you are moving video with your audio to sync, you should not turn off Quantize to Frames, in fact, there is never a reason to turn it off when working with video. Turning it off with video could cause unwanted flash frames and black frames.

I've never had an issue with black frames and never noticed flash frames. I cannot precisely sync 2 tracks with it turned on.

Former user wrote on 6/3/2021, 12:35 PM

Yes, but the smallest unit of Video is frames, when you turn if off, you run the risk of not having your frames on the frame borders correctly. Audio is at samples so it is smaller units. And at worse you are out of sync 1 frame, usually less than a frame. You are asking for trouble at some point if you edit video without quantizing to frames. But it is your video, so have fun.