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</div><div class="twikiRevInfo"><span class="twikiGrayText"><span class="twikiToolbarElem">Cinelerra.CompositingTemporary</span><span class="twikiToolbarElem">r1.5 - 22 Jan 2004 - 22:25 - <a class="twikiLink" href="../Main/AlexFerrer">AlexFerrer</a></span><span class="twikiToolbarElem"><a href="#TopicEnd">topic&nbsp;end</a></span></span></div></div>
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<h3><a name="The_Compositing_Temporary"> </a><a name="The_Compositing_Temporary_"> </a> The <a class="twikiLink" href="CompositingTemporary">Compositing Temporary</a> </h3>
<p />
When Cinelerra processes a video track, it reads images from the video media, frame by frame, one at a time. Each frame is <strong><em>temporarly</em></strong> rendered into an image bitmap in the system memory where all graphics processing (i.e. <em>a <a class="twikiLink" href="VideoEffect">VideoEffect</a></em>) is done. 
<p />
<img src="../../../pub/Cinelerra/CinelerraImages/temporary_explained.png" alt="temporary_explained.png" />
<p />
The process is pretty much as if we scanned in a roll of film one frame at a time, then (<em>using Gimp for example</em>) digitally altered the scanned image with various filters. Once the image has been transformed by the filters  <em>(Color correcting for example)</em>, we then <strong>project</strong> the finished image back into a new roll of film , thus creating a new "modified" version of the original. 
<p />
<h3><a name="Temporary_and_Tracks"> </a> Temporary and Tracks </h3>
Each video <a class="twikiLink" href="MediaTrack">track</a> on the timeline has a matching temporary. all effects and compositing on that track are processed on that temporary frame. 
<p />
<h3><a name="The_Temporary_size"> </a> The Temporary size </h3>
The size of the Temporary frame is always the same as the size of the Track. Since Tracks can be <a class="twikiLink" href="ResizeTrack">re-sized</a> to be smaller or larger than the original media format, thus the size of the Temporary.
<p />
The size of the temporary directly affects how <a class="twikiLink" href="VideoEffect">VideoEffects</a> are processed and effectivey defines the frame size of the <a class="twikiLink" href="CompositingCamera">camera</a> tool on the <a class="twikiLink" href="Compositor">Compositor</a>
<p />
To resize the temporary we use the <a class="twikiLink" href="ResizeTrack">ResizeTrack</a> menu from the video track we wish to change. 
<p />
-- <a class="twikiLink" href="../Main/AlexFerrer">AlexFerrer</a> - 19 Jan 2004
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<div class="twikiTopicInfo twikiRevInfo twikiGrayText twikiMoved"><i>Cinelerra.CompositingTemporary moved from Cinelerra.CompositorTemporary on 22 Jan 2004 - 14:57 by <a class="twikiLink" href="../Main/AlexFerrer">AlexFerrer</a> </i> - <a title="Click to move topic back to previous location, with option to change references." href="http://www.ftconsult.com/twiki/bin/rename/Cinelerra/CompositingTemporary?newweb=Cinelerra&newtopic=CompositorTemporary&confirm=on">put it back</a></div>
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