audio out of sync

[Michael Hancock]

Are the tapes that far out of sync from the first frame, or does it drift out of sync and by the time it gets to the end it’s that far out of sync?

From my experience, and from what I’ve seen others post, firewire can be notorious for sync drift. Did you control your deck with firewire or control with RS422 and capture from firewire?

Otherwise, if it’s consistently out of sync for the entire chunk of media, you can simply slip or slide edit your audio to match sync. If it varies you’ll need to match it up seperately when it starts to go out.

Does your audio rate match your sequence rate?

Mike.

[Michael Hancock]

Are the tapes that far out of sync from the first frame, or does it drift out of sync and by the time it gets to the end it’s that far out of sync?

From my experience, and from what I’ve seen others post, firewire can be notorious for sync drift. Did you control your deck with firewire or control with RS422 and capture from firewire?

Otherwise, if it’s consistently out of sync for the entire chunk of media, you can simply slip or slide edit your audio to match sync. If it varies you’ll need to match it up seperately when it starts to go out.

Does your audio rate match your sequence rate?

Mike.

[Ccrdvr]

yes its from the get go thats its out of sync. Controlled deck with firewire.

since I’m re learning avid from being taught it over a year ago checking sound anything is a big prob. for me.

I have started to cut video into the timeline but because its so far out its going to be really hard for me to find the audio to match every clip. oh man this is starting to give me a headache.

any suggestions? do I just slide everything over until it matches?

since I just want to cut audio to match what do I have
how do I do that? do I re-capture those clips but with out pressing the V (video) on the caption tool?

thanks for helping me out promoboy

[Michael Hancock]

Man, I have no idea how this could have happened! However, lets try some things if you have the time:

1. You could open your Media Tool, select it show All Drives and Current Project, Media Files. Now select a clip and in the hamburger menu at the bottom of the bin choose Media Relatives. This should highlight the Video and Audio clips in the media tool that are related (that is, the media and audio that actually are that clip). Unclick the video clips–they’ll be .omf files (or .mxf if you captured at .mxf). In a PC it’s Ctrl+Click, on a Mac it’s something else, like Shift+Click or Command+Click (I don’t know Macs). Delete the audio that’s left.

Now batch capture that clip. Start with a short one if possible. Since only the Audio is offline it will only capture the audio–see if it’s in sync. If it is, repeat with everything. If it’s still off, I’m puzzled, but you could always do this:

2. Try loading a clip into your source monitor. In your timeline deselect the Video track, then hit subclip. It should make a subclip of only your audio. Cut this into a sequence. Now make a subclip of just your video–cut it into the sequence and match up your audio and video so they’re in sync. In your timeline go to to the head of the audio where it first matches your video. Match frame the audio–it will put an IN point automatically. Do the same with the Video. You now have an In point on your Video subclip and an In point on your Audio subclip that mark the sync point. Select the Video subclip and Audio subclip in your bin, go to Clip–>Sync–>In Point. It will make a new clip of your video and audio and it should be in sync. Repeat with everything else.

Both ways will likely be timeconsuming and a pain in the rear. Have you tried redigitizing a small clip to see if it happens again? I’ve never heard of this issue, but I’ll explore the darker corners of the internet to see if anyone else has had the same problems and let you know what I find.

Keep us updated, and if you figure out what’s wrong definitely post back how you solve it!

Mike.

[Dave Schweitzer]

The HVR15MU is a relatively new deck – does your Avid software have the proper deck template or are you controlling the deck using the Generic NTSC device template?
There is a setting in the audio output settings I think where the audio offset can be adjusted – not only does this affect playout, but digitize as well. So in theory you could make adjustments until the audio is captured in sync. In looking up the HVR25MU on the Avid forums I read that the deck template is supposed to be in the next version of Avid (AXP) but for PC users there is a proper template floating around. Here is a link to the thread where the 25 template is available to manually add to your deck choices.
The 25 template may work with the 15…

[Ccrdvr]

so I tried the 1st one – everything was going fine until the unclicking of the .omp
I see no other file there except for the .omp

see when I choosed Media Relatives it highlighted my sequence and the bin in where it was at (in this case named Tape 2 part 1) and nothing else.

only file I see with .omp is the one that I highlighted to media relatives. I hoped I explained it well.

Haven’t tried number two. I’ll do that right now.
BTW I have tried to capture this again (small clip) and it still did it. Tried another project and same thing. it has to be either deck or some setting on avid.

[Ccrdvr]

you know thats interesting because I’m starting to think maybe it was the deck.

I am currently on Generic DV basic device – NTSC
When I couldnt find the deck template on avid people told me to use either use Generic, DSR 25 or 40 – all of them gave me deck control. I just stayed with Generic since it worked.

I’m gonna try and capture again using that template.

[Ccrdvr]

sorry forgot to ask where is the template located at?
Tried searching here on the forum but couldn’t find it.

thanks

[Dave Schweitzer]

Sorry, I thought I’d put the link in there. Must’ve forgot. Here it goes:

https://www.avid.com/exchange/forums/1/134233/ShowThread.aspx

[Ccrdvr]

nope.
it looked like that was the solution but its the same.
I recaptured about 5 minutes of video using that template and it still came out the same.

anymore ideas anyone?

Thanks dave S for the template.