What's the best way to estimate live video audio sync delays without recording a clip and dropping it into an NLE and counting the frames of offset?

31:16Well, I'll go first. You don't need an NLE. You can do this in quick time, just so we're clear. But let me, so there are all sorts of videos out there that are kind of like follow the bouncing balls, and then they have a frame calculator. That QR code will bring you to this video that explains precisely how to do it. The funny thing is, though, as I'm scrubbing through it, I'm like, wait a minute, this guy's using an NLE and then a frame calculator.

31:42later so i i don't know i'm i'm sure there are plenty of ways and i am positive that mr wallace will uh will cover one that's better than that youtube video so what i would do is take the concept of chicken sexting which is the art of separating chickens by gender and it's taught by one person who has no idea what they're doing essentially guessing and then the person

32:10person who actually knows what they're doing correcting it and over time that person learns the difference they don't even understand why they're but they can see and feel a difference and they become very accurate and then can train the next person so if you have ai creates you essentially this program and you guess 10 videos a day of what the offset should be i think you

32:35could get really close to just being able to eyeball this and it's just another skill that you use it's true mickey mickey can nail this like like half asleep it's kind of amazing uh carl i think carl could too carl what you got so the one um that i've seen i remember seeing it years ago in a online so this is f1 tv back at their online they they used to just run their

32:58live cameras so the race would be over and then you just follow the camera and the camera would keep walking down the pits one of the things i saw before a race started was actually them using Matchbox. So Matchbox is essentially software it's a two-piece you need two pieces so one is the analyzer and the other one is essentially a generator in which they have an iPad version

33:20and so this is what I'm showing here is the analyzer so if we go over here to the glass so the glass is essentially going to be this is a one of the generators which can be on an iOS device be an iPad or an iPhone and then the original generator which is generally on a PC based and then you can put it through that way so but yeah so Matchbox by Hitomi this is one of the

33:43solutions you can use for live which I've seen for very expensive but boy does it work it is and that's what I mean I saw it in Formula One broadcast years ago when I first saw this they usually had all the NABs and trade shows so they usually do set up their stands and they talk about what they do they do have videos on how technology works but if you don't want to do

34:00what Jason said, or you don't want to do the chicken sexting, then this is one of the ways you can actually go about getting that. It was simply the, well, what I should say is the analyzer, this particular product is the one that will tell you what to offset in which direction for either video or audio. Very good. Well, Courtney's done a little bit of AV sync in his day.

34:22Please tell me you're going to just say, use a clapper. Well, it depends. You know, I found that That video that you're talking about on YouTube with the bouncing ball. There it is, yeah. It looks like this. And it goes around and ticks once a second. And so you can freeze it and look at the – The trick is you've got to download the ProRes, right?

34:47I don't know if you can hear it. But the problem with audio-video sync in a live broadcast like this is the fact that, I don't know if you can still hear it, but I'll stop it because it's ticking in my ear, is that every pathway that the video and the audio takes that is not, you know, combined together into a single interleaved file, the audio can get out of sync again.

35:14It can get out of sync in your monitors. If you have a big screen TV that has it playing to a crowd, for example, and you're pulling audio out of the feed to that TV, the TV could have a delay because it may be in, unless you're in game mode, it may be, you know, cleaning up the video and adding four frames