播放某些视频文档后会生成一个dxva_sig.txt文件 这是因为DirectX Video Acceleration (DXVA)针对WM10编码问题引起的,微软对于解决方案的描述: 引用 This update enables Microsoft DirectX Video Acceleration (DXVA) of Microsoft Windows Media Video (WMV) content in Microsoft Windows Media Player 10 for video cards when the drivers of those video cards are designed to take...