(转) s-video vs. composite video vs. component video 几种视频格式详细说明和比较
2016-01-07 14:56
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之前对着几种视频格式认识不是很清晰,所以看数据手册的时候,看的也是稀里糊涂的。
因为项目中需要用到cvbs做视频输入,在元器件选型上,看到tw2867的数据手册上,有这么一句话:
The TW2867 includes four high quality NTSC/ PAL/SECAM video decoders that convert analog composite video signal to digital component YCbC r data for security application。
我硬是看了好几次,还去专门查了下,composite video是不是就是cvbs信号?
结果在维基百科上面看到:
Composite video (one channel) is an analog video transmission (without audio) that carries standard definition video typically at 480i or 576i resolution. Video information is encoded on onechannel, unlike the slightly higher-quality S-video (two channels) and the even higher-quality component video (three or more channels).
Composite video is usually in standard formats such as NTSC, PAL, and SECAM and is often designated by the CVBS initialism, for color, video, blanking, and sync, or simply as video.
来自:https://en.wikipedia.org/wiki/Composite_video
然后再接着就看到了下面这篇文章,实在是太有用了,转了,分享给大家。
还是老外说的实在,图文并茂的,不明白都不行:(此文出自:http://blog.csdn.net/lanmanck/article/details/8946971)
因为项目中需要用到cvbs做视频输入,在元器件选型上,看到tw2867的数据手册上,有这么一句话:
The TW2867 includes four high quality NTSC/ PAL/SECAM video decoders that convert analog composite video signal to digital component YCbC r data for security application。
我硬是看了好几次,还去专门查了下,composite video是不是就是cvbs信号?
结果在维基百科上面看到:
Composite video (one channel) is an analog video transmission (without audio) that carries standard definition video typically at 480i or 576i resolution. Video information is encoded on onechannel, unlike the slightly higher-quality S-video (two channels) and the even higher-quality component video (three or more channels).
Composite video is usually in standard formats such as NTSC, PAL, and SECAM and is often designated by the CVBS initialism, for color, video, blanking, and sync, or simply as video.
来自:https://en.wikipedia.org/wiki/Composite_video
然后再接着就看到了下面这篇文章,实在是太有用了,转了,分享给大家。
还是老外说的实在,图文并茂的,不明白都不行:(此文出自:http://blog.csdn.net/lanmanck/article/details/8946971)
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