Sound sync problem at DVinfo.net

Clay K. Carson · May 7th, 2008, 10:24 AM

I have had my A1 since August and have done several projects with no problem until now.

The last project I did was taped over several days (1080i 60f). When I captured the video into FCP, the audio was exactly 5 frames out of sync. I believe I may have accidently changed something in the camera but I cannot track it down. Can anyone help?

The sound source was through the XLR inputs, bot wireless lav and shotgun. Thanks

Clay

Clay K. Carson · May 12th, 2008, 01:48 PM

Wow...anyone have any insight?

Clay

Will Mahoney · May 12th, 2008, 01:59 PM

I'm going to ask the easy question first:
When you play and watch the source tape in the camera, is the audio off there?

Clay K. Carson · May 12th, 2008, 02:04 PM

Thanks, Yes it is if I watch the built in LCD and listen to the audio through headphones from the camera.

Clay

Jason Sovey · May 12th, 2008, 07:19 PM

Are you running the mics through anything, like a mixer, or directly into the XLRs?

Clay K. Carson · May 13th, 2008, 07:25 AM

No. I had 2 wireless lavs connected straight to the XLR jacks. I keep wondering if there is some obscure setting I changed. I really appreciate your help

Clay

Jason Sovey · May 13th, 2008, 06:58 PM

If you were using two wireless lavs, I wonder if the delay was in the wireless receiver. It's hard to say without knowing what type of lavs you were using.

Did any of the mic switches get changed, like phantom voltage, mic/att, line/mic, or the channel selectors?

Will Mahoney · May 15th, 2008, 06:00 AM

Regardless, you're stuck.

Can't you just separate the audio from the video and shift the audio track to get it in sync?

Clay K. Carson · May 16th, 2008, 10:21 AM

That is what I did. I just shifted the audio 5 frames forward. Makes it a little clunkier to edit. I just want to figure out why it started happening. The lavs were senheiser G3's. I could have changed some setting by accident but I can't seem to find it.

Clay

Michael Buonopane · June 15th, 2008, 04:55 AM

I noticed the same problem shooting HD in 24f. Out of sync both in camera and in Final Cut express.
Used Apple Intermediate codec 1080 setup. No problem in 60i

Strange..no solution yet.

Bill Pryor · June 15th, 2008, 08:55 AM

I shoot everything 24F, HD, and have never seen a problem. Could be those specific cameras need service work. I'd get them checked out before the warranty is up.

May 7th, 2008, 10:24 AM	#1
Clay K. Carson Regular Crew Join Date: Aug 2007 Location: Little Rock, Ar Posts: 49	Sound sync problem I have had my A1 since August and have done several projects with no problem until now. The last project I did was taped over several days (1080i 60f). When I captured the video into FCP, the audio was exactly 5 frames out of sync. I believe I may have accidently changed something in the camera but I cannot track it down. Can anyone help? The sound source was through the XLR inputs, bot wireless lav and shotgun. Thanks Clay

May 12th, 2008, 01:59 PM	#3
Will Mahoney Major Player Join Date: May 2007 Location: Cleveland, Ohio Posts: 259	I'm going to ask the easy question first: When you play and watch the source tape in the camera, is the audio off there? __________________ http://exposureroom.com/members/WillMahoney.aspx/ www.youtube.com/truckaccessories

May 15th, 2008, 06:00 AM	#8
Will Mahoney Major Player Join Date: May 2007 Location: Cleveland, Ohio Posts: 259	Regardless, you're stuck. Can't you just separate the audio from the video and shift the audio track to get it in sync? __________________ http://exposureroom.com/members/WillMahoney.aspx/ www.youtube.com/truckaccessories

June 15th, 2008, 04:55 AM	#10
Michael Buonopane New Boot Join Date: Jan 2007 Location: Central, CT Posts: 22	A1 audio sync I noticed the same problem shooting HD in 24f. Out of sync both in camera and in Final Cut express. Used Apple Intermediate codec 1080 setup. No problem in 60i Strange..no solution yet.

May 12th, 2008, 01:48 PM	#2
Clay K. Carson Regular Crew Join Date: Aug 2007 Location: Little Rock, Ar Posts: 49	Wow...anyone have any insight? Clay

May 12th, 2008, 02:04 PM	#4
Clay K. Carson Regular Crew Join Date: Aug 2007 Location: Little Rock, Ar Posts: 49	Thanks, Yes it is if I watch the built in LCD and listen to the audio through headphones from the camera. Clay

May 12th, 2008, 07:19 PM	#5
Jason Sovey Regular Crew Join Date: Jun 2007 Location: Reno, NV Posts: 81	Are you running the mics through anything, like a mixer, or directly into the XLRs?

May 13th, 2008, 07:25 AM	#6
Clay K. Carson Regular Crew Join Date: Aug 2007 Location: Little Rock, Ar Posts: 49	No. I had 2 wireless lavs connected straight to the XLR jacks. I keep wondering if there is some obscure setting I changed. I really appreciate your help Clay

May 13th, 2008, 06:58 PM	#7
Jason Sovey Regular Crew Join Date: Jun 2007 Location: Reno, NV Posts: 81	If you were using two wireless lavs, I wonder if the delay was in the wireless receiver. It's hard to say without knowing what type of lavs you were using. Did any of the mic switches get changed, like phantom voltage, mic/att, line/mic, or the channel selectors?

May 16th, 2008, 10:21 AM	#9
Clay K. Carson Regular Crew Join Date: Aug 2007 Location: Little Rock, Ar Posts: 49	That is what I did. I just shifted the audio 5 frames forward. Makes it a little clunkier to edit. I just want to figure out why it started happening. The lavs were senheiser G3's. I could have changed some setting by accident but I can't seem to find it. Clay

June 15th, 2008, 08:55 AM	#11
Bill Pryor Contributor Join Date: Jan 2003 Location: Kansas City, MO Posts: 4,449	I shoot everything 24F, HD, and have never seen a problem. Could be those specific cameras need service work. I'd get them checked out before the warranty is up.