@set Thanks, but this is the video themselves or the /phone camera , it's offset in my media players also, that's why I supplied a couple of files to see if they're offset in others PC's too,

This is one. 👍

ah... ok... here's both of media as read in my system in VP21:

And, for little curiosity, test in Capcut:

@set Thanks, yep that's the same as I get, at least I know it's not my PC.

I've reset & cleared the phone camera's cache, tried HEVC etc. but no improvement.

I buy what I hope is the best phone camera I can because it's convenient for me when I'm working, I can put it i my pocket & pull it out whenever I want. For my videos the picture & audio quality is more than good enough but this is poss going to bug me. .

If I find a solution I'll update this post for anyone in the future.

Thanks again 👍

@set Just for the sake of trying I recorded the same with my GoPro11, it seems worse 😵 I don't know what's going on, I wonder if it's a transfer thing, I download from the cameras using a USB type C from the cameras into a fast USB on my PC..

This is that GoPro click - https://drive.google.com/file/d/1KjNbm1nwojWJgLPmVamNAiLamySaHsYB/view?usp=sharing

(I added a bit of brightness just to see the knife, this didn't change the audio/video sync)

USB Transfer is just copying data, no effect... this is about the video stream & audio stream recording in the camera system. I think it's just okay if you need to really adjust the position, to make it extremely perfect exact position, where in the video stream, by the time the knife touching then pan, the sound of 'impact' going out and recorded in the audio stream.

On the other side... are the differences really seen / felt ? I guess, anyone have their own thought.

Perhaps I can share one of my multicamera recording, where I feed sound one from the room's ambient mic, and the other from mixer's line, and here's what I noticed:

@set 

USB Transfer is just copying data, no effect... 

Yep, I took the GoPro card out & downloaded the file with a card reader USB gadget thing, the files were exactly the same as when I downloaded using the Type C connection.

On the other side... are the differences really seen / felt ?

No I don't think so, like I say most of my vids are just noise that isn't noticeable if it's a frame or two out of sync, & if it is important or noticeable I'll take a closer look to sync them.

This is the sort of noise I'd normally be making, trying out my new saw, (the wood is too thin for this test & falls through the hole in the bottom of the saw's base, this vid won't be getting uploaded to the net 😊)

This is my phone & the Gopro, no out of sync is noticeable on either vid, & when put together I did a similar thing to your vid with the two audios 👍

My family friend, a photographer in Idaho, has the same camera phone, and I've edited several movie clips for her since she got the phone last year.

As with your footage, the audio sync (and a whole bushel of other stuff!) is different every time if you:

• Use a different Vegas version
• Use a different internal decoder
• Compare a render to the source
• Rewrap the source to CFR
• Play your source in a player

The cause is nothing new or unique, it turns out.

One thing that is puzzling is the incongruent metadata between the presumed 59.94 base framerate and the PAL designation ?

I haven't paid precise attention to sync with my friend's footage, but if you still need to make an adjustment after converting your source to CFR (in Shutter Encoder), it will at least be by a consistent amount.

@mark-y Thanks,

One thing that is puzzling is the incongruent metadata between the presumed 59.94 base framerate and the PAL designation ?

I'm not 100% sure I understand that but I'll look into it 👍

 after converting your source to CFR (in Shutter Encoder), it will at least be by a consistent amount.

That's good to know, I was wondering about that, I don't want to be trying to sync a track that's like a rubber band 😁 👍, Since buying Vegas18 I often convert to ProRes with Shutter Encoder, the main clip for this is UHD 60p 18.28mins 9.3GB, Shutter Encoder converted it in about 4mins, that's well worth time spent to get the better performance in Vegas, I've seen a huge playback difference with this (300) build but simple 12frame transitions (in 30p vids, 24frames in 60p) still won't be totally smooth even after a couple of loop plays (0 effects added), but with ProRes they're smooth as silk first time.

I've never used pro video cameras, for 20yrs+ I've just always tried to get the best phone camera, ease of use & portability as i mentioned, Do pro cameras have sync issues if you delve in close enough n look.?

Your S23 Samsung shoots Variable Frame Rate. Vegas has problems with VFR. Always has.

You can rewrap it to CFR in ffmpeg, or use Shutter Encoder or Handbrake to convert it, which ever you prefer.

This should improve, or at least stabilize your audio sync issues.

I don't know of any "pro" cameras that list VFR as a feature, although there may be some.

Variable frame rate is only one of hundreds of compression "tricks" that consumer portable devices use to cram more data into a smaller space. Not surprisingly, nonlinear editors are not not necessarily cooperative.

One thing that is puzzling is the incongruent metadata between the presumed 59.94 base framerate and the PAL designation ?

I'm not 100% sure I understand that but I'll look into it 👍

PAL frame rates are either 25 or 50.

@mark-y Ah thanks yep I understand a little about that, I'm in the UK England, my phone options are 30 or 60p, & Gopro options are 24, 30, 60, 120 or 240 depending on size & aspect ratio. The Gopro MediaInfo doesn't say whether it's PAL or NTSC?

I've wondered about this reg my monitor, playback with moving objects in Vegas sometimes shows a minor horizontal line type glitch, it's hard to catch it with a screen capture so I've never asked about it, my Dell 32" monitor is set at 60hz. but it has 50hz option. could the differences in al these make visual problems?

It's normally at the top roughly 1/3 down, this is the closest recreation i can make with Gimp, can you see this circle, the top third is offset by a fraction, image seeing this appear randomly very quickly while playing the Vegas preview but if you stop play it looks fine.

... Gopro options are 24, 30, 60, 120 or 240 depending on size & aspect ratio. The Gopro MediaInfo doesn't say whether it's PAL or NTSC?

With my GoPro 10, the NTSC frame rates are the default settings as far as I can recall, but if you go to Preferences/General and scroll down to "flicker rate" and change that setting from 60Hz to 50Hz, frame rates will then be PAL frame rates - 25, 50, etc.

I assume, though don't know for sure, that the GoPro 11 should have the same 50/60 Hz options so as to change between NTSC and PAL frame rates. GoPro 8 was much more straightforward because the frame options were clearly given elsewhere.

From GoPro 11's user manual:

Anti-Flicker

Choose the regional frame rate for recording and playback on a TV.

Set 60Hz (NTSC) for North America. Try 50Hz (PAL) if you're outside of

North America. The right format for your region will help prevent flicker

on a TV/HDTV when you play back video that was recorded indoors.

It therefore is the same as in GoPro 10.

@Dexcon Thanks I'll have a look, you need to go into the GoPro app to do that which I rarely use but I won't be changing it though, my phone only creates 30 & 60p, I don't want to be mix n matching different frame rates in a project.

I just need to add that the 'minor horizontal line type glitch' I mentioned above is with all media whether it's converted to CFR or not, It's hard to recreate & doesn't always happen. I'll try & capture if I do notice it again.

.. you need to go into the GoPro app to do that ...

Not at all ... I just swipped down on GoPro's window and then swipped left and the Preferences menu button (it is large) appears - click on it and the options including 'Anti-Flicker' opens up. Maybe that option isn't available in GP11 though that would mean that it couldn't be changed out on location without having to go online.. I also rarely use the GoPro app except for updates.

Agreed to maintain frame rates between capture devices for the one project. Nonetheless, I've had to transcode HEVC from both my GoPro 10 and Samsung S23 Ultra cameras to mp4 AVC (transcoding in either VP or Resolve Studio 18) because HEVC has thus far struggled in Vegas Pro and, for that matter, also in Resolve Studio 18. Others of course have different experiences with HEVC. And with Samsung S23 video, to transcode VFR to CFR (as mentioned earlier in this thread). BTW, the majority of my media used in a project is mp4 AVC in 4K 25 fps from a Sony camera.

NB: I've never understood why phone cameras are only NTSC frame rates (@ 60Hz) when most of the world - including China and India - uses 50 Hz thus meaning PAL frame rates such as 25/50 fps.

@Dexcon Ah thanks, this is a fairly new Gopro for me, those options do feel familiar in the back of my mind so maybe I looked when I first got it but not since & have forgotten 👍. My old Gopro Hero 4 was hard to see the screen so I rarely changed anything on that once it was set up.

This Gopro 11 is set to 60hz

I too usually use the AVC option on the phone because of Vegas struggling with HEVC but this new (300) version plays my Gopro HEVC really well, full 59.94fps playback at Good (Full) without a problem, (I use Good (Half)), I've even considered changing to HEVC on the phone so it matches the Gopro, don't want to rock the boat at the mo.