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#1 Posted : Monday, May 30, 2016 6:40:08 AM(UTC)
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Joined: 5/30/2016(UTC)
Posts: 1
I made simple XAML title with periodically changing text, but it eats too much CPU. VMIX cpu usage goes from 3% to 20% on 4 core processor when it's on, in comparision, ffmpeg streaming takes the same amount. Is there any way to optimize it?

Code:

<UserControl x:Class="TextHD_changing2"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" Width="720" Height="576" xmlns:my="clr-namespace:vMixTitleLibrary;assembly=vMixTitleLibrary">
    <UserControl.Resources>
        <Storyboard x:Key="Storyboard1" RepeatBehavior="Forever" Duration="00:30:0">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="Text1">
		<SplineDoubleKeyFrame KeyTime="0:0:0" Value="0"/>
		<SplineDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
		<SplineDoubleKeyFrame KeyTime="0:15:0" Value="1"/>
		<SplineDoubleKeyFrame KeyTime="0:15:2" Value="0"/>
	    </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="Text2">
		<SplineDoubleKeyFrame KeyTime="0:15:2" Value="0"/>
		<SplineDoubleKeyFrame KeyTime="0:15:4" Value="1"/>
		<SplineDoubleKeyFrame KeyTime="0:29:58" Value="1"/>
		<SplineDoubleKeyFrame KeyTime="0:30:0" Value="0"/>
	    </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </UserControl.Resources>
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="FrameworkElement.Loaded">
            <BeginStoryboard Storyboard="{StaticResource Storyboard1}"/>
        </EventTrigger>
    </UserControl.Triggers>
    <Grid>
        <my:TextBlockDesign FontWeight="Bold" Stroke="Black" StrokeThickness="1" HorizontalAlignment="Left" Margin="15,10,15,10" Name="Text1" Text="First text" VerticalAlignment="Bottom" Width="690" Height="556" TextAlignment="Right" FontSize="24" Fill="White" Opacity="0">
        </my:TextBlockDesign> 
        <my:TextBlockDesign FontWeight="Bold" Stroke="Black" StrokeThickness="1" HorizontalAlignment="Left" Margin="15,10,15,10" Name="Text2" Text="Second text" VerticalAlignment="Bottom" Width="690" Height="556" TextAlignment="Right" FontSize="24" Fill="White" Opacity="0">
        </my:TextBlockDesign> 
    </Grid>
</UserControl>
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Maximus  
#2 Posted : Monday, May 30, 2016 2:02:13 PM(UTC)
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Joined: 10/25/2012(UTC)
Posts: 178
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I too am experiencing high render times when using animated titles. Render times go from 5-6ms to 22-40ms. I am not sure if a more powerful video card would resolve this. I am currently using a NVidea 760, but I will wait on a 1070 before upgrading.
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