From: "Brendan Bolles" Received: from spike.lmi.net ([66.117.140.17] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 5498710 for AE-List@media-motion.tv; Tue, 10 Jun 2014 23:20:45 +0200 Received: from [10.0.1.10] (c-71-198-249-239.hsd1.ca.comcast.net [71.198.249.239]) by spike.lmi.net (Postfix) with ESMTP id 45CB1154016 for ; Tue, 10 Jun 2014 14:20:44 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1085) Subject: Re: [AE] Lossless movie format In-Reply-To: Date: Tue, 10 Jun 2014 14:20:43 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "After Effects Mail List" X-Mailer: Apple Mail (2.1085) On Jun 10, 2014, at 12:28 PM, Byron Nash wrote: > I second the comments made from everyone. I agree with Teddy that = extra channels would be really helpful along with 32bit color as well. = There aren't many options for rendering when you need 32bit or alpha = channels. If you could make the channels arbitrary like openEXR, that = would be even better. Being able to embed multiple alphas, or depth or = some other thing into the video would be great.=20 Yeah, I've been thinking about that one and it should be do-able. MXF, = like many container formats, lets you put any number of tracks into it. = The key will be coming up with a standard way to attach meaning to the = different tracks. Since EXR is already going to be a part of MOX, I = guess EXR-style channel access would make the most sense. Different codecs have different capabilities. EXR lets you put an = arbitrary number of channels into a frame, but many codecs like PNG can = only do RGBA and others like JPEG and Dirac can only do RGB (no alpha). = But I think MOX should let people do JPEG with Alpha by writing a second = track to hold the alpha. That same model should be expanded to let = people write another view for stereo, or multiple layers, or whatever = they want like you can with EXR. Brendan