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I have a Windows 8 Store app that currently plays black 4 .wmv videos synchronously. I want to introduce a function for audiovisual "mixdown". ie- render/transcode these 4 videos into 1 new video (mp4 or wmv including audio) and add a watermark. I'm not sure yet if this is possible in a Windows Store app but someone with the right experience in Win32 and Com for Windows Store Apps may be best to advise. I also need to control the audio mix of the videos being rendered and insert this functionality into my app.
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