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我在 Windows Media Encoder 9 上编程来录制屏幕,我们可以选择两种视频编解码器,(1)Windows Media Video 9 编解码器和(2)Windows Media Video 9 屏幕编解码器。

我的问题,

  1. 我有点担心使用(2),因为我认为对于大多数客户端计算机,他们安装了 Windows Media Video 9 编解码器,但没有 Windows Media Video 9 屏幕编解码器。那么使用 Windows Media Video 9 屏幕编解码器录制/编码的视频在大多数计算机上播放会遇到问题吗?不知道我的理解是否正确?

  2. 对于录音质量/性能,首选(1)还是(2)?

  3. 使用 WME 9 录制屏幕时,对于 (1) 和 (2) 之间的选择还有什么好的建议吗?

提前谢谢,乔治

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Windows Media Video 9 Screen

The Windows Media Video 9 Screen codec is optimized for compressing sequential screenshots and highly static video that is captured from the computer display, which makes it ideal for delivering demos or demonstrating computer use for training. The codec takes advantage of the typical image simplicity and relative lack of motion to achieve a very high compression ratio.

During the encoding process, the codec automatically switches between lossy and lossless encoding modes, depending on the complexity of the video data. For complex data, the lossless mode preserves an exact copy of the data. For less complex data, the lossy mode discards some data to achieve a higher compression ratio. By automatically switching between these two modes, the codec maintains video quality while maximizing compression.

Overall, the Windows Media Video 9 Screen codec delivers better handling of bitmap images and screen motion, even on relatively modest CPUs. It is also up to 100 times more efficient than the commonly-used run length encoding.

That definitely sounds like the way to go if you're doing screencasts, and I wouldn't worry about compatibility since any computer with Windows Media Player 11, ffdshow, or VLC Player should be able to play it.

于 2009-09-07T01:36:21.510 回答