From: "Evan Fotis Georgoulakis" Received: from [83.235.69.31] (HELO medusa.otenet.gr) by media-motion.tv (CommuniGate Pro SMTP 6.1.0) with ESMTPS id 7497879 for AE-List@media-motion.tv; Sun, 26 Jan 2020 11:54:51 +0100 Received: from [192.168.1.5] (ppp-2-84-188-157.home.otenet.gr [2.84.188.157]) (Authenticated sender: evan-g@otenet.gr) by medusa.otenet.gr (ESMTP) with ESMTPSA for ; Sun, 26 Jan 2020 12:54:47 +0200 (EET) Subject: [AE] OT [PR] Ultra key help To: After Effects Mail List References: X-Tagtoolbar-Keys: D20200126125447593 Message-ID: Disposition-Notification-To: Evan Fotis Georgoulakis Date: Sun, 26 Jan 2020 12:54:47 +0200 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.17) Gecko/20080914 Lightning/0.9 Thunderbird/2.0.0.17 Mnenhy/0.7.5.666 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Hi all, I have some blue screen clips keyed in PR  due to GPU acceleration. In most clips Ultra key works "ok", but on two clips, no matter what I do it will render only the alpha channel.  Output> composite is checked in the Ultra keyer. In PR timeline it shows up correctly... Here is a snapshot from this clip in PR with settings https://i.postimg.cc/kG9wRRvY/PR.jpg Here is how it comes out in the rendered file https://i.postimg.cc/Dfdxk579/Render.jpg Any suggestions? Thank you