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Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
1Microsoft Confidential
Silverlight Partner SummitExpression Encoder
Media PlayerDecember 12, 2008
Randy Oakley
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
2
Expression Encoder Media Player• Overview• Released as part of Expression Encoder V2 SP1• Implemented as a Silverlight 2 skinnable custom control• Provides common user interface controls desired for a web
base media player. E.g. play/pause, playback position, volume control, etc
• Provides the controls and features needed by many applications without additional development work
• Complete C# and XAML source provided to enable customization for your business needs
• Expression Blend makes it easy to customize appearance. Four video and two audio “skins” included as starting points
• Visual Studio 2008 can be used to modify and extend player behavior
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
3
Expression Encoder Media Player Overview
Silverlight 2 Default player skin
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
4
Expression Encoder Media Player Overview
Gallery player skin
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
5
Expression Encoder Media Player Overview
Frosted Gallery player skin
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
6
Expression Encoder Media Player Overview
Black Glass player skin
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
7
Expression Encoder Media PlayerPlayer Controls
Play/Pause
PreviousChapter
Next Chapter Stop
Frame Step
Frame Step
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8
Expression Encoder Media PlayerPosition Indicators
PositionThumb
Position
Duration
Hours
MinutesSeconds
Frames
Clicking on the position bar seeks to that point – instead of default “page up” / “page down” behavior of the “Slider” control
Media seeking is controlled during
thumb drag to improve user experience
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
9
Expression Encoder Media PlayerAudio Controls
Louder
VolumeSlider Mute
Softer
Controls are coordinated – e.g. hitting the “Louder” button automatically “unmutes”So does dragging the volume slider thumb
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
10
Expression Encoder Media PlayerToggle Controls
Full Screen
ChapterList Caption
s
Play List
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
11
Expression Encoder Media Player Features
IIS Smooth Streaming • Adapted from NBC Olympics• Instant start with no downloading• Video segmented into fixed duration blocks (default two
seconds)• Each segment is encoded at different bitrates
• Automatic adjustment to network conditions and PC power• Bit rate of next segment is selected heuristically to avoid
frame dropping• Bit rate will adjust upward as conditions allow• First segment is always played at lowest bit rate
• Eliminates the need to the user to chose a bit rate (e.g. “watch in high quality”)
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
12
Expression Encoder Media Player Features
Resizing and Full screen• Shrinks controls to accommodate small window sizes• Typically uses 1:1 pixel mapping to most efficient
video playback• Will shrink video as needed to avoid clipping• Automatically switches from 1:1 pixel mapping to
scaling in full screen• Provides control fade out events in both “normal” and
“full screen” modes• Mouse movement restores controls
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
13
Expression Encoder Media Player vs
Using Silverlight MediaElement directly
• If your application doesn’t need or want any controls• If your application requires a radically different UI e.g.
a “Video Cube”• Even if your application requires only one control – it
will like be less work to start with an EEMP template and delete the controls you don’t need
• Download size is only a few hundred K, small compared to the video itself
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
14
Expression Encoder Media PlayerCustomizing in Blend Demonstration
For more info on custom control skinning, search on these keywords: Jesse Liberty Creating Skinnable Custom Controls
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
15
Expression Encoder Media PlayerExtending the player using Visual Studio 2008
Proprietary and Confidential, Microsoft Corporation 2008. All rights reserved.
16Microsoft Confidential
For More InformationVisit www.microsoft.com/silverlight/partners
Email [email protected]
http://blogs.msdn.com/randyoakley/default.aspxhttp://www.clarkezone.net/
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