1。为什么我用的圆刚的视频采集卡,在98下我自己写的软件可以显示各种大小(包括768X576)在2000下就只能显示到320X240 在软件中把图片变小可以变打就不行(没反映一样是320X240大小)?
2。有的视频卡带SDK有的不带SDK具体有什么区别?
3。视频分辨率和视频显示分辨率有什么不一样?
2。有的视频卡带SDK有的不带SDK具体有什么区别?
3。视频分辨率和视频显示分辨率有什么不一样?
调试欢乐多
http://btwincap.sourceforge.net/download.htmlhttp://btwincap.sourceforge.net/features.html
You can use Adobe Premiere! (This one uses the VFW API).
It works fine with VirtualDub under Win2k, despite its WDM nature. Regardless of what the author says, I did not need to recompile on Win2k. Also: I have a dual CPU system - the author went to great lengths to make the driver SMP-compatible, evidently with success.
Two minor issues: 1) the Hauppauge applications (WinTV, WinTV Radio) break. (WinTV never worked for me on Win2k anyhow ... "error initializing hardware") 2) You need a DirectShow capture program to get access to all the settings of the driver (e.g. to change the video standard from NTSC to PAL). The included capture program, AMCAP, does allow you to watch TV, listen to the radio, and to set up the driver. It is quite buggy, though - I think it is little more than a M$ sample application from the SDK. Highly recommended!
2.是否有sdk跟采集卡供应商有关,一般都有的。
3.视频输入窗口是数字化的图像尺寸,PAL制式最大尺寸765×576,NTSC制式为640×480。
视频显示分辨率就是在显示器的显示的图像尺寸,不能大于视频输入窗口。小于的时候可以用裁剪和比例缩小。