From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 73CC1E0085F; Mon, 10 Nov 2014 08:59:11 -0800 (PST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 X-Spam-HAM-Report: * 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider * (picmaster[at]mail.bg) * -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no * trust * [193.201.172.117 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's * domain * 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily * valid * -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Received: from mx1.mail.bg (mx1.mail.bg [193.201.172.117]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 7ACF4E0072A for ; Mon, 10 Nov 2014 08:59:04 -0800 (PST) Received: from [192.168.0.40] (unknown [93.152.132.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.mail.bg (Postfix) with ESMTPSA id A783960008B6; Mon, 10 Nov 2014 18:59:00 +0200 (EET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mail.bg; s=default; t=1415638740; bh=iSi4nf5ObljV2ypx6yGiFOE1HBbp/qSMzjn1gF6XYCw=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=xPP6EncbcagBf89lmkRq2TMrnUo3vOV7iwTBhlvxaZ5hQrONrn1HPvNfLyG3kfvZW Vd9WXo9fPrjKk4m2MW5O0aDxO+JjJSoNpsAIVExR1ZmpuilQyJohAptSuy6YI52Z0M q27wcfd03WW9yEbIeJm1upgaoASpZY14XRjTohzM= Message-ID: <5460EED4.8000508@mail.bg> Date: Mon, 10 Nov 2014 18:59:00 +0200 From: Nikolay Dimitrov User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 MIME-Version: 1.0 To: Ralph Imx References: In-Reply-To: Cc: meta-freescale@yoctoproject.org Subject: Re: Slow frame rates when decoding H264 video 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: Mon, 10 Nov 2014 16:59:11 -0000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Hi Ralph, On 11/10/2014 06:03 PM, Ralph Imx wrote: > Hi, > I'm struggling to get my Boundary Devices Nitrgoen6_lite board to decode > H264 video at the framerate stated in the Freescale i.MX6Solo datasheet. > It should be able to do 720p60 or 1080p30 video but all I've managed is > 1080p at 23fps and 720p at 57fps using my own system. I *have* managed > to reach 720p at 60fps and 1080p at 60fps by using an image using old > VPU/IPU firmware but this is quite old and deprecated (see > http://boundarydevices.com/ltib-on-i-mx6-without-x/). At least I know > that my video clips are correctly encoded to allow decoding at full > frame rate. > Interestingly, if I try to decode a 1080p stream but use a 720p screen > resolution with sync turned off, I can get the decoding going up to > 43fps. The problem comes when I set the screen resolution to 1080p that > the frame rate drops to 23fps. > In addition to my own Linux system, I have created a Linux system > (using bitbake fsl-image-multimedia-full) from the daisy, dizzy and > master branches of Yocto but as I say, I can't get the required > framerate here either. Does anyone know why I can't reach the stated > specification for this chip of H264 decode using my own build? What > could be the bottleneck - are there any issues with recent IPU/VPU firmware? > Thanks. How do you measure the playback framerate? Regards, Nikolay