From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org)
	by finch.gentoo.org with esmtp (Exim 4.60)
	(envelope-from <gentoo-user+bounces-133300-garchives=archives.gentoo.org@lists.gentoo.org>)
	id 1RiHLA-0003xu-Rb
	for garchives@archives.gentoo.org; Wed, 04 Jan 2012 03:16:37 +0000
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
	by pigeon.gentoo.org (Postfix) with SMTP id BF76621C175;
	Wed,  4 Jan 2012 03:16:18 +0000 (UTC)
Received: from mail-ww0-f53.google.com (mail-ww0-f53.google.com [74.125.82.53])
	by pigeon.gentoo.org (Postfix) with ESMTP id DEE5821C164
	for <gentoo-user@lists.gentoo.org>; Wed,  4 Jan 2012 03:14:41 +0000 (UTC)
Received: by wgbds1 with SMTP id ds1so26025923wgb.10
        for <gentoo-user@lists.gentoo.org>; Tue, 03 Jan 2012 19:14:41 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to
         :content-type;
        bh=faU+JQox7AmB60N4pUy9RwMBMsitFuN9Om5uuNj6wbw=;
        b=g4Q3QrI+nvyMGiPGEIMFbp8lc767urtpS/9ytJQXa2kyoUkv647Ciz8nUzKKPEiG+A
         fvWCQNsbrr8AIswbbCWhLCNhYvasAfqAFkYVwtKv5ulxscU+bAYL63gxkyCyzxBRsNR5
         p3iNx5KgF30J1X1TXbwWVPDoEZc3jRVKIfSTY=
Received: by 10.227.198.19 with SMTP id em19mr66797459wbb.14.1325646881158;
 Tue, 03 Jan 2012 19:14:41 -0800 (PST)
Precedence: bulk
List-Post: <mailto:gentoo-user@lists.gentoo.org>
List-Help: <mailto:gentoo-user+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-user.gentoo.org>
X-BeenThere: gentoo-user@lists.gentoo.org
Reply-to: gentoo-user@lists.gentoo.org
MIME-Version: 1.0
Received: by 10.180.97.41 with HTTP; Tue, 3 Jan 2012 19:14:20 -0800 (PST)
In-Reply-To: <201201011856.27120.michaelkintzios@gmail.com>
References: <4EF48DA6.1080203@gmail.com> <jd24d8$4u3$1@dough.gmane.org>
 <4EF5311F.9010901@gmail.com> <201201011856.27120.michaelkintzios@gmail.com>
From: =?UTF-8?Q?Claudio_Roberto_Fran=C3=A7a_Pereira?= <spideybr@gmail.com>
Date: Wed, 4 Jan 2012 01:14:20 -0200
Message-ID: <CAGo3WeoiyEy4xFq1_S96SsfmY9=aUC===emrZAxvjF5dERogTg@mail.gmail.com>
Subject: Re: [gentoo-user] Re: Video editing advice on formats and size of file
To: gentoo-user@lists.gentoo.org
Content-Type: text/plain; charset=UTF-8
X-Archives-Salt: 8f100493-97bd-4cd9-a07d-eb5a1ef4cb12
X-Archives-Hash: 280437263fc0d8d4eb20c9cacc26b144

Ok, I know what to do. I played a little with ffmpeg and avconv
(ffmpeg's fork, libav, conversion utility) converting 3D YouTube
videos to play at the Nintendo 3DS.
Anyways, I'll pretend you're using ffmpeg, I prefer libav but ffmpeg
is much more common (both are made available by portage, there is
virtual/ffmpeg now). Their syntax is a little different by the way, if
you prefer using libav just look at libav changelog
(/usr/share/doc/libav-version/CHANGELOG.bz2, or something close to
that).

ffmpeg -i file1.avi -i file2.avi -vcodec copy -acodec copy -async 12
-o output.avi

You can use multiple input files, not just 2. If their codec match,
you can copy, if they don't match then you'll need to re-encode the
files (or the just the ones with the different codec).
The -async 12 option do the synchronization trick. The 12 indicates
that ffmpeg should try to correct synchronization at most 12 times per
second. You could use less, try and see the results yourself. I'd say
that even 5 or 3 would give great results, but 12 doesn't seem to
increase file size either.