Return-Path: Received: from mta31.charter.net ([216.33.127.82] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 4895389 for ae-list@media-motion.tv; Fri, 09 Nov 2012 21:47:42 +0100 Received: from imp09 ([10.20.200.9]) by mta31.charter.net (InterMail vM.8.01.05.02 201-2260-151-103-20110920) with ESMTP id <20121109205050.TGVW24708.mta31.charter.net@imp09> for ; Fri, 9 Nov 2012 15:50:50 -0500 Received: from [192.168.2.3] ([71.94.133.66]) by imp09 with smtp.charter.net id MYqp1k00L1S6qBK05Yqp8G; Fri, 09 Nov 2012 15:50:50 -0500 X-Authority-Analysis: v=1.1 cv=8o//B4IucHYBKSw6ZzJ5BKvhDmK8HQmI5fv+ogTc58g= c=1 sm=1 a=mAPq94Sxlh8A:10 a=yUnIBFQkZM0A:10 a=Vx6aIzdhH7H4BIXK4xUDUQ==:17 a=hTmo6BQnAAAA:8 a=9kpiMG8CAAAA:8 a=MqKSN0MkAAAA:8 a=hOpmn2quAAAA:8 a=Tg9tz8NZTAGM80FqOVgA:9 a=pILNOxqGKmIA:10 a=xJxwlSTHri8A:10 a=RFaxJ1YKWH0A:10 a=p3b_eOXHgIUA:10 a=hUswqBWy9Q8A:10 a=fBvPoFfzihKaJQHb_KIA:9 a=_W_S_7VecoQA:10 a=m7MBwcV2VT4crT0e:21 a=Vx6aIzdhH7H4BIXK4xUDUQ==:117 From: Jonathan Penzner Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-29-524894672 Subject: Re: [AE] AE / FCP Audio Sync Discrepancy Date: Fri, 9 Nov 2012 12:50:49 -0800 In-Reply-To: To: "After Effects Mail List" References: Message-Id: X-Mailer: Apple Mail (2.1085) --Apple-Mail-29-524894672 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 That's very interesting, Stephen. Thanks. Yes I was exporting the audio = and video as one file. I'll try the OMF route. On Nov 9, 2012, at 12:47 PM, Stephen van Vuuren wrote: > Jonathan, > =20 > I have seen this problem with many round trip projects involving audio = with my DCP work that involved FCP in the roundtrip. > =20 > I don=92t have 100% confirmation but the error seems to related to the = fact the FCP, when export is involved, does NOT use 23.976 for 24p frame = rates but has math errors, probably rounding e.g. 23.98 or other = rounding errors related to XML and other imports/exports. The only way = I=92ve been able to deal with this is to use OMF out of FCP and use that = as the audio base which appears to not have the error. Unfortunately for = many work flows, that does not work. > =20 > So I suggest export the video on it=92s on, without audio from FCP = (not clear if this is what you are doing) and the audio as OMF. In my = experience, that does let 24p projects sync on round-trip. > =20 > stephen van vuuren > 336.202.4777 > =20 > http://www.insaturnsrings.com/ > http://www.sv2dcp.com/ > http://www.sv2studios.com/ > =20 > A film is =96 or should be =96 more like music than like fiction. It = should be a progression of moods and feelings. The theme, what=92s = behind the emotion, the meaning, all that comes later. > =96Stanley Kubrick JONATHAN PENZNER SUNDANCE/REALTIME VIDEO EDITING =95 MOTION GRAPHICS =95 DESIGN | STUDIO 626 345-0285 | | CELL 818 321-2890 | SUREAL@CHARTER.NET --Apple-Mail-29-524894672 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
That's very interesting, Stephen. Thanks. Yes = I was exporting the audio and video as one file. I'll try the OMF = route.


On Nov 9, 2012, at 12:47 PM, = Stephen van Vuuren wrote:

I = have seen this problem with many round trip projects involving audio = with my DCP work that involved FCP in the = roundtrip.
I = don=92t have 100% confirmation but the error seems to related to the = fact the FCP, when export is involved, does NOT use 23.976 for 24p frame = rates but has math errors, probably rounding e.g. 23.98  or other = rounding errors related to XML and other imports/exports. The only way = I=92ve been able to deal with this is to use OMF out of FCP and use that = as the audio base which appears to not have the error. Unfortunately for = many work flows, that does not work.
So I = suggest export the video on it=92s on, without audio from FCP (not clear = if this is what you are doing) and the audio as OMF. In my experience, = that does let 24p projects sync on = round-trip.
stephen van vuuren
 

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