How to Sync Audio and Video in DaVinci Resolve 2020

in this lesson we're going to use the

Vinci result to sync a videos audio with

the higher quality audio that was

recorded from a different device for

example if you did a screen recording

with your phone or laptop and use the

standard mic that came with that device

more often than not it sounds horrible

and if you had a good quality audio

recorder running at the same time you

can use that audio instead but you will

have to sync them up DaVinci Resolve 16

has an auto sync audio feature I'll show

you how it works whether it's good or

bad and I'll show you another way of

doing it if it's not good let's do it

okay I have two files here one file is

the screen capture I did on my phone but

I also ran my higher quality audio

recorder device in parallel so it was

also sitting there recording the session

so I have two audio files one is part of

the video and one is separate but higher

quality so I'm trying to merge or sync

the higher quality audio into the video

okay let me show you the difference

between the audio quality let me drag

the video down it sounds a little hollow

like yeah it sounds like a cheap

recording now let me drag the higher

quality audio down and for some reason

you don't want to you can tell the big

improvement of quality of the audio file

here because microphones make a big

difference and if your voice doesn't

translate well on your phone or on your

laptop or a webcam like mine doesn't I

do not like my voice when I hear my

recording on a phone or on a webcam so I

needed a good quality audio recorder and

by doing that it's given me some

confidence to you know continue on my

tutorials so DaVinci Resolve comes with

a auto sync audio feature and you can do

that by simply highlighting both files

the video file and your better audio

file together right click one of them

and you will see this auto sync audio

we're going to do it based on waveform

it's going to do its thing it's

analyzing sometimes you have to wait a

few more seconds it looks like it's done

but sometimes it's not ready just give

it another 5 seconds or so looks like

something happened now it might be ready

let's drag down okay now it's ready okay

so let's play this just go down there

you see it says YouTube at the bottom

sharing your passion okay so okay so did

you hear the difference and it turned my

voice into a more chipmunk keys

sounding voice like a quicker speed and

I've done this multiple times and I

can't figure out why it's doing that

there might be a setting that you can

change but I haven't figured it out if

you know how to fix this please comment

so I can update the video and tell

people about it but I'm stuck with

listening to myself as a chipmunk this

is not acceptable and we need a

different way and I haven't seen other

people fixed it yet so you know what

we're going to do it the old-fashioned

way okay that old fashioned way is the

manual way we're going to look at the

waveforms and match them up with our

eyes so here's how to do it the

old-fashioned way

let's drag down the video and let's drag

down our better quality audio right

beneath it the reason why I do the clap

clap in the beginning is because just

like those Hollywood pictures you see

how people use that board that marker

indicator and clap and they slap it down

that also gives them a way to sync their

audio with their video that clapping in

the beginning gives me a way to easily

see the the highs of the waveform to

easily match the audio so let me show

you the two claps and the original video

is here that and that let me expand this

zoom in I did a ctrl + sign to zoom in

or you could use this bar to control the

zoom in okay so these are the two claps

and we play that and these are the two

cliffs on the bottom file with the

higher quality audio clap clap so all I

have to do is sync this up one method

for me is to go to the peak of the first

clap on the video and what I do is use

the left arrow to step frame-by-frame

backwards by about 4 frames 1 2 3 4 now

I'm going to use the blade tool to cut

that and then I'm going to go to the

peak of the higher quality audio down

here using the arrow buttons to a

just okay so I'm at the center at the

peak of the first clap on the bottom

audio so now one two three four and then

I'll cut that here use the blade tool so

now I have two cuts I will click the

pointer again select this section of the

video press backspace and also select

this portion of the bottom audio and

press backspace so now these just have

to be aligned and it is easy by clicking

here to match to get to the beginning of

the video clip and then dragging the

audio over there there you go

so that's my method so if I play this

now lap clap okay so okay there's two

audios going let me mute the top one and

just run this here and if for some

reason you don't want to there you go we

have a pretty perfectly matched audio

with my video now and let's go to the

end you can start seeing a shift see

that over here if you have a longer

video this is about three minutes long

there is a shift going on the video is

recording at a certain pace and the

audio device was recording us at a

slightly slower rate for some reason

just can't have these devices sync in

perfectly there's these minut

differences and the longer your video is

and the longer the audio file is the

more discrepancy there will be if

they're not matched up perfectly so you

just have to adjust it manually for

example we're going to make the

adjustment now in this section

okay let's position the head right at

the beginning of this waveform on the

video audio after highlight the video

make press s instead of the blade it's

the same thing it cuts it and take the

playhead to the beginning of that audio

file below select the file and press s

again to cut and then get rid of this

portion by pressing backspace don't

press delete and just drag

Audio over now it's matched up again and

there you go now you see a button that's

click so you might have to do that add a

couple of spots in the middle so that

it's better synced up there you go

that's my manual method the

old-fashioned method of syncing up video

and an external audio recording

unfortunately the venturi resolve kind

of dropped the ball on this but maybe

there's a setting that I can figure out

later how to match it up perfectly but

right now it's not working for me I

don't want to sound like a chipmunk so

I'm using the old-fashioned way if you

would like to find out what software

equipment and other tools I use check

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