Return-Path: Received: from mail-ea0-f180.google.com ([209.85.215.180] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 4993887 for AE-List@media-motion.tv; Tue, 05 Mar 2013 11:51:42 +0100 Received: by mail-ea0-f180.google.com with SMTP id c1so1028369eaa.25 for ; Tue, 05 Mar 2013 02:58:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:content-type; bh=ugYM+ZLxkefMKrqN/lTiNJI9Sl4As3oOFH7Q8L0jH88=; b=O4v4CaZcS0D+KNuoxhhBDALJGaSWyIGvM4cj9Nl1FAkFvXnI6nR/Zl2sDbSIUxb9op 6q04Bml6ABKL+Qc0gZjDUd4Tr2TlbN8MgwRHRAua8s8iUt2FirV05mH2lIOlKcboQgzu Qayc0LXTlRPWERsleOraqtK9/u2OoD4BrlDpDHdGZF2NNhBd/UJjvnhiwe76BG0vf8qI uGnGSNBnBp5v4SA4tXVGgZx9+uzM+faRFk3iGq3RgHhVqOJKDZUmu24QGxmEOvQToeuh a3maEnaE64zppPWjHB2t5fa0WuFCGZr3psC0zu3sb738cbqoOqUgwC2rw4U9icZFJcDC 0Jhw== X-Received: by 10.14.205.68 with SMTP id i44mr69172824eeo.25.1362481108382; Tue, 05 Mar 2013 02:58:28 -0800 (PST) Return-Path: Received: from [192.168.0.2] (host86-155-203-76.range86-155.btcentralplus.com. [86.155.203.76]) by mx.google.com with ESMTPS id z45sm16243620eeu.10.2013.03.05.02.58.25 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 05 Mar 2013 02:58:27 -0800 (PST) Message-ID: <5135CFD2.3070008@gmail.com> Date: Tue, 05 Mar 2013 10:58:26 +0000 From: Perry Mitchell User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:9.0) Gecko/20111220 Thunderbird/9.0 MIME-Version: 1.0 To: After Effects Mail List Subject: Re: [AE] Pixel aspect ratio question References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------000806010005030708070304" This is a multi-part message in MIME format. --------------000806010005030708070304 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit I'm not sure that wide screen stretch mode format for SD was ever common in the USA? Anyways - all digital broadcast SD is delivered 'non-square' due to a decision way back to use a common line sample of 720 for both 'PAL' and 'NTSC'. In fact it works out a bit more complicated in that the digital 720 samples occupy a little more than the active line period in analog, approx 712 in NTSC and 702 in PAL actually represent that period. PAL is sometimes broadcast as 704x576 being the next lowest sample divisible by 16. Camera manufacturers gradually increased the active line periods to cover the whole 720 samples. It is all a glorious mess and pretty much any possible aspect ratio has probably been used at some time! To the chase - 4:3 and 16:9 both occupy the same nominal 720 samples here in UK (and AFAIK the rest of Europe) . The only difference is that the 16:9 has a 'flag' which tells the display device to stretch the picture wider to fill a wide screen. In other words they are both non-square or anamorphic but the wide screen is more extreme. Hope this helps a tiny bit! Perry Mitchell Engineer Farnham, Surrey On 05/03/2013 04:14, jarret langmeire wrote: > Ok, it seems that last one did the trick. Now I'm wondering how I > should have known that based on their spec sheet - does the line > "CCIR Pixel Aspect - PAL CCIR 720 x 576 non-squared" (from their spec > sheet) make this clear, ie. that I need to output a D1/DV PAL (1.09 > pixel aspect ratio) project as opposed to a 1.46 project? > > Thanks again everyone. > > On 5 March 2013 13:10, jarret langmeire > wrote: > > I've now generated a 720 x 576 non-widescreen project in AE and > have rendered that out - let's see if that does the trick. > > > --------------000806010005030708070304 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I'm not sure that wide screen stretch mode format for SD was ever common in the USA?
Anyways - all digital broadcast SD is delivered 'non-square' due to a decision way back to use a common line sample of 720 for both 'PAL' and 'NTSC'. In fact it works out a bit more complicated in that the digital 720 samples occupy a little more than the active line period in analog, approx 712 in NTSC and 702 in PAL actually represent that period. PAL is sometimes broadcast as 704x576 being the next lowest sample divisible by 16. Camera manufacturers gradually increased the active line periods to cover the whole 720 samples. It is all a glorious mess and pretty much any possible aspect ratio has probably been used at some time!
To the chase - 4:3 and 16:9 both occupy the same nominal 720 samples here in UK (and AFAIK the rest of Europe) . The only difference is that the 16:9 has a 'flag' which tells the display device to stretch the picture wider to fill a wide screen. In other words they are both non-square or anamorphic but the wide screen is more extreme.
Hope this helps a tiny bit!
Perry Mitchell
Engineer
Farnham, Surrey

On 05/03/2013 04:14, jarret langmeire wrote:
Ok, it seems that last one did the trick. Now I'm wondering how I should have known that based on their spec sheet - does the line "CCIR Pixel Aspect - PAL CCIR 720 x 576 non-squared" (from their spec sheet) make this clear, ie. that I need to output a D1/DV PAL (1.09 pixel aspect ratio) project as opposed to a 1.46 project?

Thanks again everyone.

On 5 March 2013 13:10, jarret langmeire <langmeire@gmail.com> wrote:
I've now generated a 720 x 576 non-widescreen project in AE and have rendered that out - let's see if that does the trick. 


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