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</div><div class="twikiRevInfo"><span class="twikiGrayText"><span class="twikiToolbarElem">Cinelerra.SetFormat</span><span class="twikiToolbarElem">r1.5 - 17 Feb 2004 - 17:49 - <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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<h2><a name="SetFormat_Set_Media_Format_Param"> </a><a name="_SetFormat_Set_Media_Format_Para"> </a> <a class="twikiLink" href="SetFormat">Set Media Format</a> Parameters </h2>
<p />
<ul>
<li> <img src="../../../pub/Cinelerra/CinelerraImages/format.png" alt="format.png" />
</li>
</ul>
This window allows you to set parameters for your project. Any parameters set here will be used as defaults when creating new <a class="twikiLink" href="MediaTrack">audio or video tracks</a>. 
<p />
To open the <a class="twikiLink" href="SetFormat">SetFormat</a> window go to <a class="twikiLink" href="MainProgram">MainProgram</a> <img src="../../../pub/TWiki/TWikiDocGraphics/arrowright.gif" border="0" alt="MOVED TO..." width="16" height="16" /> <a class="twikiLink" href="TopMenuBar">TopMenuBar</a> <img src="../../../pub/TWiki/TWikiDocGraphics/arrowright.gif" border="0" alt="MOVED TO..." width="16" height="16" /> <a class="twikiLink" href="SettingsMenu">SettingsMenu</a> and select <code><b>Format..</b></code>
<p />
<h3><a name="Audio_Parameters"> </a> Audio Parameters </h3>
<h4><a name="Samplerate"> </a> Samplerate </h4>
The audio sample rate parameter determines the number of samples per second (and thereby the quality) of your audio tracks
Select your audio sample rate according to your raw materials and the expected output of your program.
<p />
<ul>
<li> Available rates
<ul>
<li> 8000
</li>
<li> 16000
</li>
<li> 22050
</li>
<li> 32000
</li>
<li> 44100
</li>
<li> 48000 (16 bits)
</li>
<li> 96000
</li>
<li> 192000  
</li>
</ul>
</li>
</ul>
<img src="../../../pub/TWiki/TWikiDocGraphics/warning.gif" border="0" alt="ALERT!" width="16" height="16" /> incorrect audio sample rates can create "resampling" delays when playing your media , be sure to <a class="twikiLink" href="AssetInfo">check the sample rate</a> of your incoming media for better results.
<p />
<h4><a name="Channels"> </a> Channels </h4>
Select how many different audio channels you will be working with.
<h4><a name="Channel_positions"> </a> Channel positions </h4>
Channel positions is the only setting which doesn't affect the output necessarily. It is merely a convenience so when more than 2 channels are used, the pan controls on the timeline are effective. Channels 3, 4, and 5 wouldn't be very adjustible if they occupied the same locations as channels 1 and 2 on a pan control. 
   *To adjust channel positions <code><b>click</b></code> on a speaker icon and drag to change the position of a channel. 
<p />
<ul>
<li> <img src="../../../pub/TWiki/TWikiDocGraphics/tip.gif" border="0" alt="TIP" width="16" height="16" /> Different channels can be positioned very close together to make them have the same output.
</li>
</ul>
<p />
<h3><a name="Video_Parameters"> </a> Video Parameters </h3>
<h4><a name="Frame_rate"> </a> Frame rate </h4>
Set the frame rate for your video media 
<h4><a name="Canvas_size"> </a> Canvas size </h4>
<ul>
<li> <code><b>Width</b></code> Set 
</li>
<li> <code><b>Height</b></code> Set
</li>
<li> <code><b>W Ratio</b></code> Set
</li>
<li> <code><b>H Ratio</b></code> Set
</li>
</ul>
<h4><a name="ColorModels_Color_Model"> </a><a name="_ColorModels_Color_Model_"> </a> <a class="twikiLink" href="ColorModel">Color Model</a> </h4>
Select the <a class="twikiLink" href="ColorModel">ColorModel</a> best suited for your media and project.
<p />
<ul>
<li> RGB-8 Bit
</li>
<li> RGBA-8 Bit
</li>
<li> RGB-16 Bit
</li>
<li> RGBA-16 Bit <em>(16 bit RGB With Alpha channel)</em>
</li>
<li> YUV-8 Bit
</li>
<li> YUVA-8 Bit
</li>
<li> YUV-16 Bit 
</li>
<li> YUVA-16 Bit <em>(16 bit YUV With Alpha channel)</em>
</li>
</ul>
<p />
<img src="../../../pub/TWiki/TWikiDocGraphics/warning.gif" border="0" alt="ALERT!" width="16" height="16" /> Your <a class="twikiLink" href="ColorModel">ColorModel</a> selection can affect the speed and quality of your video playback and <a class="twikiLink" href="VideoEffect">VideoEffect</a>. If you are not familiar with Video <a class="twikiLink" href="ColorModel">ColorModel</a> concepts, you <strong>should</strong> read the <a class="twikiLink" href="ColorModel">ColorModels</a> section before setting this parameter.
<p />
<h4><a name="Aspect_ratio"> </a> Aspect ratio </h4>
Aspect ratio determines the shape of the video output when using the X11 video output. The numbers in each direction can be any floating point number. When drawn on the screen, video pixels are stretched to match the aspect ratio.
<p />
<p />
<h4><a name="Apply"> </a> Apply </h4>
When the Apply button is pressed the new settings take effect and the results can be seen on the <a class="twikiLink" href="Viewer">Viewer</a> &amp; <a class="twikiLink" href="Compositor">Compositor</a> windows . <br> <img src="../../../pub/TWiki/TWikiDocGraphics/warning.gif" border="0" alt="ALERT!" width="16" height="16" /> If the new settings do not conform with the media assets original format, the video will be distorted to fit the selected <a class="twikiLink" href="OutputSize">OutputSize</a>. 
<p />
<img src="../../../pub/TWiki/TWikiDocGraphics/tip.gif" border="0" alt="TIP" width="16" height="16" /> You can find out the original media formats of any loaded media assets, using the <a class="twikiLink" href="AssetInfo">AssetInfo</a> menu on the <a class="twikiLink" href="AssetManager">AssetManager</a> folder
<p />
<img src="../../../pub/TWiki/TWikiDocGraphics/help.gif" border="0" alt="HELP" width="16" height="16" /> A list of supported formats can be found at the <a class="twikiLink" href="FileFormat">FileFormat</a> page.
<p />
<p />
-- <a class="twikiLink" href="../Main/AlexFerrer">AlexFerrer</a> - 12 Jan 2004
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