Win8 media platform: higher low-power experience

Computer store news Microsoft is committed to bringing more excellent video/audio enjoyment to users in Win8, in the official Windows8 blog of Building, Scott Manchester, project manager for the Microsoft Media Platform and Technology team, writes about Microsoft's development work behind music and video playback improvements. In many cases, these improvements made by Microsoft will increase battery life or improve performance.

For example, audio data will be processed in batches/blocks. This mechanism will improve CPU performance and save battery. Microsoft Win8 introduces a better bit rate system, the initial video stream will use a lower rate during video buffering, and Win8 will also adopt a new content mixing system.

In most cases, the priority video playback from the app in Windows is in the foreground, and the video stream will slow down when the user moves the app to the background. In fact, when the music playback is placed in the background, it can still be played to the maximum volume.

When playing video and camera capture preview, Win8 CPU usage will be less than half of Win7

PCM audio terminal to terminal pipeline Delay: Low Latency Mode

Video frames are captured at 30 frames per second and transcoded to H.264

Video in Win8 Play with subtitles

Win8 video uses multi-track playback