From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from r109.websiteservername.com (r109.websiteservername.com [65.39.128.45]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 4CCA6E013D6 for ; Fri, 12 Jul 2013 01:19:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=keylevel.com; s=default; h=To:References:Message-Id:Content-Transfer-Encoding:Cc:Date:In-Reply-To:From:Content-Type:Mime-Version:Subject; bh=9YDyFHIIvmwb2aDh2oO5/xqUy1Lp3Et3af1Ds4qSdQg=; b=UG/dKon9go+ZL6t5Kwd+g2/zAoJdv+xx1+6P9yv0WjBm0QEKJD7DGcgNxBIt2VohVBMH8GQFHDHrbbMORN5u1jXp0PwWG4H0Su3HOjf3HXQDHy9yFHWprAhauSsbCADIVG1VKyvplyS6i18RMfji5/dmQrT3/DIznHa4pVAJomw=; Received: from [109.224.129.17] (port=15222 helo=macbook-pro.durham.keylevel.com) by r109.websiteservername.com with esmtpa (Exim 4.80) (envelope-from ) id 1UxYa5-001XRe-Uz; Fri, 12 Jul 2013 09:19:58 +0100 Mime-Version: 1.0 (Apple Message framework v1283) From: Chris Tapp In-Reply-To: Date: Fri, 12 Jul 2013 09:19:56 +0100 Message-Id: References: <1445523.dnBZldpQsA@rudolf> <94D47F23-99E7-4BD8-9744-726B50B1FCAC@keylevel.com> <51DF4C52.8080607@gmail.com> <8A53AA29-B054-4B1A-A23E-ABF7AEDAD265@keylevel.com> To: Philip Craig X-Mailer: Apple Mail (2.1283) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - r109.websiteservername.com X-AntiAbuse: Original Domain - yoctoproject.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - keylevel.com X-Get-Message-Sender-Via: r109.websiteservername.com: authenticated_id: chris.tapp+keylevel.com/only user confirmed/virtual account not confirmed Cc: meta-freescale Mailing List Subject: Re: Gstreamer pipeline problem X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Jul 2013 08:20:02 -0000 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable On 12 Jul 2013, at 09:03, Philip Craig wrote: > On Fri, Jul 12, 2013 at 5:50 PM, Chris Tapp = wrote: >> Hi John, >>=20 >> On 12 Jul 2013, at 01:22, John Weber wrote: >>=20 >>> Hi Chris, >>>=20 >>>> gst-launch videotestsrc ! v4l2sink >>>>=20 >>>> to work as there's no /dev/video1 ! Does anyone know where I can = find instructions on how to get v4l2 working under Ubuntu 12.04 for a = radeon HD 5450 card? Google has not been my friend ;-) >>>>=20 >>>=20 >>> /dev/video1 is created when you have an actual video input like a = video decoder or camera or UVC camera and it would be used with v4l2src = (or in the case of i.MX6 CSI, mfw_v4lsrc). >>>=20 >>> videotestsrc should not need a video input device to work though as = it is creates its own video data. What is the error you are seeing? >>>=20 >>> What is your setup? Board? Yocto version? Yocto image? >>=20 >> Sorry, I don't make myself clear here. I wanted to try v4l on my = Ubuntu development system first - it's this that isn't working: >=20 > If you don't already have a v4l2 output device on your dev system, > then you're unlikely to be able to use v4l2sink. I had a quick look > around for virtual v4l2 output devices, but didn't see any (I only > found virtual input devices). I'm not sure that testing v4l2sink on > your dev system is going to tell you much though. It would be roughly > equivalent to testing with xvimagesink or autovideosink. Thanks for the feedback. That's unfortunate as I need a pipeline which can run on many different = platforms, including 'standard pc'. This was one reason why I was using = fakesink to capture the images - v4l looked like a way to go so that I = could stream the video direct to the screen and get the full benefits of = any acceleration supported by a platform (zero copy, etc.). I've not found a lot of helpful information on the internet about v4l2 = (less about output devices), so I've not even been able to identify one = I can put in my system. I'll have to have a look at using gst-plugins-gl to see if I can use the = texture upload aspects (there was a thread on this recently I need to = look at in more detail). Mean time I'll also try v4l on the Wandboard to see if that gives any = info on the problem I'm having with my fakesink pipeline. Chris Tapp opensource@keylevel.com www.keylevel.com