List of Windows 10 (developer preview) UWP Audio, Video, Camera and Graphics samples

[Update: Fixed broken links] Hello again my fellow media development enthusiasts. It is that time once again. Windows 10 UWP apps are more media capable than ever before. My previous lists of Media centric samples for Windows 8 & 8.1 were popular and hopefully helpful so I wanted to make sure to continue the tradition. In this edition…


Capturing raw PCM audio on Windows Phone 8 and 8.1

[This is a copy of the blog post I originally wrote and published on behalf of the WSDS team. The original post can be found here.] There are a number of different audio capture and playback APIs on Windows Phone 8.x. Unfortunately If you want to get at the raw PCM data and process it…


Achievement Unlocked: MIDI support added to Windows 8.1 apps

[This is a copy of the blog post I originally wrote and published on behalf of the WSDS team. The original post can be found here: aka.ms/Img05f] Since the release of Windows 8 Developer Preview I have been pushing our Multimedia group to add MIDI support for Windows Store apps. On April 4th, 2014 I achieved…


Using MediaComposition to add background audio to video (Windows Phone 8.1)

One of our friends on the forum pointed out that we really don’t have any good samples on how to use the MediaComposition. Hopefully we will remedy this soon. To help you get your feet wet with this cool new technology added to Windows Phone 8.1 here is some really basic sample code. Enjoy! // Load video file…


Free Chalk Talk: Light up Your Apps with Sights and Sounds

Hello All, I am giving a live chalk talk on October 16th for interested English speaking engineers. Anyone can sign up and join the talk for free! If you or someone you know would benefit from a discussion about integrating audio and video technologies into your apps please join me. All audio and video questions…


List of Windows 8 CP audio / video and camera samples

I have been on the hunt for various samples to pass along to the developers I”ve been working with on the Metro style apps forums. It quickly became apparent that we have over two hundered samples and sorting through them to find a media sample that can help you out is a time consuming task. In an…


Activating an audio endpoint when not connected causes the device to report incorrect capabilities

The other day we had a major OEM report an issue with the WASAPI. In particular when they found that when they called “IAudioEndpointVolume::QueryHardwareSupport” it would occasionally return unexpected results for USB web cam devices. Most of the time calling this method would return a full list of capabilities for the device. Occasionally this method…

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“Leave audio at remote computer” Doesn’t Work in Windows Server 2008

When connecting to Windows Server 2008 through remote desktop choosing to leave the audio on the remote machine does not work as expected. Although the option shows up on the remote desktop application, if you select it and then connect, the audio is simply disabled as if you had selected the “do not play” option…

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Custom DirectShow Audio Renderer hangs playback in Windows Media Player 11

If you write your own DirectShow based Audio Renderer and want it to work inside WM Player 11 don’t derive it from CBaseRenderer. If you use CBaseRenderer, A/V playback in WM Player may hang. Unfortunately it doesn’t hang all the time. The hang usually manifests after seeking. So at first glance everything is working fine…

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