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Author Topic: Syncing audio with video  (Read 6495 times)

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Offline acidjack

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Re: Syncing audio with video
« Reply #15 on: October 13, 2015, 10:32:48 AM »
Is there a relatively simple tutorial/YT vid I could watch that can explain how to do this? I booted up iMovie and tried to sync some audio, but it didn't really get me where I needed to be...
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Offline DigiGal

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Re: Syncing audio with video
« Reply #16 on: October 13, 2015, 01:25:23 PM »
Here's one way...


Three Clap Sync
https://www.youtube.com/watch?v=9gVL-pMv1FM
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Offline willndmb

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Re: Syncing audio with video
« Reply #17 on: October 13, 2015, 10:18:30 PM »
Is there a relatively simple tutorial/YT vid I could watch that can explain how to do this? I booted up iMovie and tried to sync some audio, but it didn't really get me where I needed to be...
the three clap synch is helpful if you can and are planning ahead but if you are doing a concert or something that you have no control over the only real way is to try and find drum hits or something else to get it close and adjust from there.
The biggest issue you will find are different clocks on the video and audio recorders. That's why I try and run line out of my recorder directly into my camcorder if poss but since that's not always poss, you may find that after a period of time you need to split the audio and adjust it again.
The good news is that once you know how the records clocks line up you can do it faster and easier in the future
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Offline LIVEMUSIC752

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Re: Syncing audio with video
« Reply #18 on: September 01, 2016, 09:32:48 PM »
I've been using FCP for a number of years, and am stuck on FCP7 due to lack of time in investing in learning the new version.  So...I use Plural Eyes to handle a lot of the syncing.  Another note, if you shoot a video screen, or from a great distance, the audio will of course be out of sync.
how much delay would you need?

Offline guitard

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Re: Syncing audio with video
« Reply #19 on: September 02, 2016, 11:28:48 AM »
Another note, if you shoot a video screen, or from a great distance, the audio will of course be out of sync.
how much delay would you need?

It depends on the distance.  You just have to adjust it frame-by-frame until the video and audio are in sync.  The drummer is always a good point of reference.  Just adjust until the drummer's stick hitting the drum or symbol is in perfect sync with your audio.
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Offline tapeheadtoo

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Re: Syncing audio with video
« Reply #20 on: September 03, 2016, 08:32:04 AM »
I've been using FCP for a number of years, and am stuck on FCP7 due to lack of time in investing in learning the new version.  So...I use Plural Eyes to handle a lot of the syncing.  Another note, if you shoot a video screen, or from a great distance, the audio will of course be out of sync.
how much delay would you need?


The sound lag/delay is approximately 1ms/ft.  In the back row of the 200 level in an arena that comes out to 4-6 frames (at 30fps) depending on how stage is set up, catwalks etc.

I typically correct for delay in both stage shots and screen (often they will have different lags).

I started with iMovie then moved to FCE.  For the past several years I've been using FCPX.  Both transitions (from iMovie to FCE, then onto FCPX) were difficult for me.  After failing with printed books and online tutorials, both times I had to resort to taking One-On-One sessions at my local Apple Store.  After a few sessions of each though I was up and running.

I love FCPX now.  The audio/video sync feature alone has saved me countless hours of time.
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Offline guitard

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Re: Syncing audio with video
« Reply #21 on: September 03, 2016, 11:52:10 AM »
I typically correct for delay in both stage shots and screen (often they will have different lags).

Certain bands are really bad about out of sync screens - and Black Sabbath has to be the worst.  I was working on a recent show a few days ago and the screen is 7 frames behind the live action on stage.  So when the drummer has the drum sticks extended all the way in the air to prepare to come smashing down on the drums, you here the drum get hit before he even starts to lower his arms.  So if you have a shot that has both of a lot of screen shots along with a lot of close stage shots - you have to make a choice and sync to one of the other.  I usually choose to sync to the stage action.
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Offline tapeheadtoo

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Re: Syncing audio with video
« Reply #22 on: September 03, 2016, 12:58:02 PM »
So if you have a shot that has both of a lot of screen shots along with a lot of close stage shots - you have to make a choice and sync to one of the other.  I usually choose to sync to the stage action.

I sync to both separately.  First I'll sync to stage action.  Then I'll figure the lag between stage and screen, and offset all the screen portions accordingly.  It's a pain when there's lots of shifting from stage to screen but I do it because I can't stand any part out of sync.  If anything to me the screen being out of sync is worse because often those are close zoom-ins whereas from my typical seat location (far end of arena--20x zoom isn't even buying me full head to toe) the delay isn't as noticeable.
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Offline robeti

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Re: Syncing audio with video
« Reply #23 on: September 15, 2016, 03:11:26 PM »
So if you have a shot that has both of a lot of screen shots along with a lot of close stage shots - you have to make a choice and sync to one of the other.  I usually choose to sync to the stage action.

I sync to both separately.  First I'll sync to stage action.  Then I'll figure the lag between stage and screen, and offset all the screen portions accordingly.  It's a pain when there's lots of shifting from stage to screen but I do it because I can't stand any part out of sync.  If anything to me the screen being out of sync is worse because often those are close zoom-ins whereas from my typical seat location (far end of arena--20x zoom isn't even buying me full head to toe) the delay isn't as noticeable.

I do exactly the same for the same reasons
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Offline guitard

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Re: Syncing audio with video
« Reply #24 on: September 16, 2016, 07:14:36 PM »
So if you have a shot that has both of a lot of screen shots along with a lot of close stage shots - you have to make a choice and sync to one of the other.  I usually choose to sync to the stage action.

I sync to both separately.  First I'll sync to stage action.  Then I'll figure the lag between stage and screen, and offset all the screen portions accordingly.  It's a pain when there's lots of shifting from stage to screen but I do it because I can't stand any part out of sync.  If anything to me the screen being out of sync is worse because often those are close zoom-ins whereas from my typical seat location (far end of arena--20x zoom isn't even buying me full head to toe) the delay isn't as noticeable.

If I'm working with a full screen shot, then I do this.  But quite often a shot includes both stage and screen, which forces you to make a choice.
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Offline willndmb

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Re: Syncing audio with video
« Reply #25 on: September 18, 2016, 08:13:29 PM »
So if you have a shot that has both of a lot of screen shots along with a lot of close stage shots - you have to make a choice and sync to one of the other.  I usually choose to sync to the stage action.

I sync to both separately.  First I'll sync to stage action.  Then I'll figure the lag between stage and screen, and offset all the screen portions accordingly.  It's a pain when there's lots of shifting from stage to screen but I do it because I can't stand any part out of sync.  If anything to me the screen being out of sync is worse because often those are close zoom-ins whereas from my typical seat location (far end of arena--20x zoom isn't even buying me full head to toe) the delay isn't as noticeable.

If I'm working with a full screen shot, then I do this.  But quite often a shot includes both stage and screen, which forces you to make a choice.
i hear ya, for me I usually do whichever is more prevalent, the stage or screen. That way if people do say it's off it is less time then it is on synch
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