From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 99029] VCE VAAPI segfault using ffmpeg Date: Thu, 11 May 2017 14:03:41 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1243327141==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 72AD46E0BB for ; Thu, 11 May 2017 14:03:41 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1243327141== Content-Type: multipart/alternative; boundary="14945114210.86eC.1302"; charset="UTF-8" --14945114210.86eC.1302 Date: Thu, 11 May 2017 14:03:41 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D99029 --- Comment #5 from Alex Deucher --- I'm not too familiar with VAAPI, but for transcoding, you really need effic= ient pipelining between the decode and the encode. If there are CPU copies in t= he middle, performance won't be great. We generally recommend using gstreamer with OpenMax using tunneling so that there are no extra copies between the decode and encode stages of the transcode. I'm not sure if VAAPI supports something like this. --=20 You are receiving this mail because: You are the assignee for the bug.= --14945114210.86eC.1302 Date: Thu, 11 May 2017 14:03:41 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Comment= # 5 on bug 99029<= /a> from Alex Deucher 
I'm not too familiar with VAAPI, but for transcoding, you real=
ly need efficient
pipelining between the decode and the encode.  If there are CPU copies in t=
he
middle, performance won't be great.  We generally recommend using gstreamer
with OpenMax using tunneling so that there are no extra copies between the
decode and encode stages of the transcode.  I'm not sure if VAAPI supports
something like this.

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