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<concept xml:lang="en" id="GUID-FE7DE542-3FD4-56D2-B281-C670EF1C4FEB"><title> Scaling Automatically</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This tutorial describes how to set automatic scaling. </p> <section><title>Purpose</title> <p>The purpose of this tutorial is to show you how to scale the video picture to automatically match the video window. </p> <p><b>Required Background</b> </p> <p>The <xref href="GUID-2DC80BA9-7AA2-5CD3-9105-1DE28CE196C1.dita">Video Client Overview</xref> introduces the video client utilities. </p> <p><b>Introduction</b> </p> <p>Automatic scaling enables you to set video display settings, such as best fit or stretch, that can apply irrespective of the resolution of a video clip. This functionality is provided by the <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-F6AE0276-9C47-3342-8768-290E13586AF9"><apiname>CVideoPlayerUtility::SetAutoScaleL()</apiname></xref> method. </p> <p> <b>Note:</b> Not all video controllers support automatic scaling. </p> </section> <section><title>Using Automatic Scaling </title> <p>The following tasks are covered in this tutorial: </p> <ul><li id="GUID-E5D983C4-821C-5B95-A97D-4748FCF6C442"><p><xref href="GUID-FE7DE542-3FD4-56D2-B281-C670EF1C4FEB.dita#GUID-FE7DE542-3FD4-56D2-B281-C670EF1C4FEB/GUID-E5B9D967-820A-5854-A634-F752E9033BDB">Set Automatic Scaling</xref>  </p> </li> </ul> <p id="GUID-E5B9D967-820A-5854-A634-F752E9033BDB"><b>Basic Procedure</b> </p> <p>The high level steps to set automatic scaling are shown here: </p> <ol id="GUID-47B6A15C-9909-54FD-AC5F-E3BB03B2441C"><li id="GUID-F6231296-DAF6-5704-8B65-303BDFEF3664"><p>Create a new video player utility object. </p> </li> <li id="GUID-B84AE1FF-B56F-5AE8-9F51-227CE150D06D"><p>Open a video clip to play. </p> </li> <li id="GUID-A5C9FA0F-3A03-5283-B0A2-8032AB24D4E0"><p>Set automatic scaling using one of the following methods: </p> <ul><li id="GUID-80CEC490-3990-57A8-A305-A8D0E62B746A"><p> <b>Based on Scaling Type</b>  </p> <p>Call <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-F6AE0276-9C47-3342-8768-290E13586AF9"><apiname>CVideoPlayerUtility::SetAutoScaleL()</apiname></xref> and set <xref href="GUID-3F4883AD-AE6B-3353-883E-3389E3DB6040.dita"><apiname>aScaleType</apiname></xref> to the automatic scaling type required. </p> </li> <li id="GUID-8A3E0397-75C5-5D2B-A0F6-92F01537A0DA"><p> <b>Based on Scaling Type and Vertical and Horizontal Position</b>  </p> <p>Call <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-F6AE0276-9C47-3342-8768-290E13586AF9"><apiname>CVideoPlayerUtility::SetAutoScaleL()</apiname></xref> and set <xref href="GUID-3F4883AD-AE6B-3353-883E-3389E3DB6040.dita"><apiname>aScaleType</apiname></xref>, <xref href="GUID-A8FC551F-3E90-3359-9D3F-76A6180E3AB0.dita"><apiname>aHorizPos</apiname></xref> and <xref href="GUID-B4900AC3-0A39-320B-AD92-47F84DFD6875.dita"><apiname>aVertPos</apiname></xref> to the required values. </p> </li> </ul> <p> <b>Note:</b> Calling <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-F6AE0276-9C47-3342-8768-290E13586AF9"><apiname>CVideoPlayerUtility::SetAutoScaleL()</apiname></xref> will override any scaling factors set with <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-82617B68-03F5-3B7F-961E-FEA20A595913"><apiname>CVideoPlayerUtility::SetScaleFactorL()</apiname></xref>. </p> </li> <li id="GUID-979D9C6B-12A8-5B79-8C86-D27DFB0BA776"><p>Call the <xref href="GUID-0F1F8AC6-B99F-3274-A785-9977197AF762.dita#GUID-0F1F8AC6-B99F-3274-A785-9977197AF762/GUID-B4FB00AA-A85B-3A3F-91BE-C5347462BA95"><apiname>CVideoPlayerUtility::Prepare()</apiname></xref> method. </p> </li> <li id="GUID-9442FF1C-79C4-52CD-B552-4A477C01CDF1"><p>Control playback normally. </p> </li> </ol> <p><b>Example</b> </p> <codeblock id="GUID-690C0DBD-A771-556C-86D7-F1B26CA96EA3" xml:space="preserve">//Create new video player utility object (iVideoPlayer) 
// Open the video clip

iVideoPlayer-&gt;SetAutoScaleL(EAutoScaleBestFit); 
// scale picture to best fit window without clipping

// Call Prepare() and then Play() to playback normally</codeblock> </section> <section><title>See Also</title> <p><xref href="GUID-172F46C1-6066-57FA-A815-5AC23ACE159D.dita">Creating and Preparing a Video Player</xref>  </p> <p><xref href="GUID-F9896E96-1076-552D-AE54-8F9DABED867F.dita">Configuring the Video Player</xref> </p> <p><xref href="GUID-733B9695-0C7C-5637-9025-6CE3BAA1A23E.dita"> Enabling/Disabling Audio or Video Playback Separately</xref>  </p> <p><xref href="GUID-5F4510C9-5B16-593A-A225-37606800915B.dita">Controlling Video Playback</xref>  </p> <p><xref href="GUID-70B3881F-9532-5F1D-B210-99A15DB93FC2.dita">Fast Forwarding and Rewinding</xref>  </p> <p><xref href="GUID-469377FB-AAE8-5245-A8E1-469C65AFE5C5.dita">Stepping Frames</xref>  </p> <p><xref href="GUID-F13C7D36-E4AB-57F1-87A1-EB83AA2258DF.dita">Controlling the Video Controller Plugin</xref>  </p> </section> </conbody></concept>