2018年3月27日 · According to the help page, it can display several complex pixel formats, BGR, NV12 and YV12 are among them. Optionally, a format string may be associated with the pixel format. It specifies the semantics of each channel for rendering: RG, UV. RGB, BGR, YUV. RGBA, BGRA... A number of special YUV formats are supported as well.

2017年10月25日 · The standard Y-U-V pixel arrangement for YV12 is (which android seems to not follow): while YUV420 has V and U planes interchanged. So you should be able to play YV12 content with ffplay using (as Gyan mentioned in other answer): ffplay -f rawvideo -pixel_format yuv420p -video_size 640x480 -vf shuffleplanes=0:2:1 -i record_640x480_1.yv12

2013年9月11日 · That's impossible. Y'UV420p is a planar format, meaning that the Y', U, and V values are grouped together instead of interspersed. The reason for this is that by grouping the U and V values together, the image becomes

2005年2月15日 · YV12 samples chroma with essentially half the resolution of YUY2. This is generally unnoticeable, but I'm sure in careful examination it would be fairly obvious in high detail areas. Of these two, YUY2 is higher quality. I think the highest quality output would be straight RGB24, since there would be no needed color space conversions to display it.

2014年3月6日 · YV12 is exactly like I420, but the order of the U and V planes is reversed. 2. Semi Planner. Semi planar formats have two planes instead of three, one plane for luminance, and one plane for both chrominance components. Here both array can be at different offset in single buffer also. NV12, NV16. reveresed semi planners or interleaved planners :

2011年2月2日 · Here is an example for a YUV buffer in YV12 format: Mat mYUV(height + height/2, width, CV_8UC1, (void*) frameData); Mat mRGB(height, width, CV_8UC3); cvtColor(mYUV, mRGB, CV_YUV2RGB_YV12, 3); The key trick is to define the dimensions of your RGB Mat before you convert.

2005年8月24日 · What is the difference between IYUV, YV12, YUY2 ….etc? I discovered one thing about wmv that I can’t quite figure out. Apparently WMV9 achieves at least some of its compression by reducing the color palette for the video. For example if you have true black for half the pixels and white...

2009年8月20日 · "High quality yv12 to rgb conversion" "select closest matching colorspace" I leave the YV12 check box checked, then I press Apply and OK to close the ffdshow video decoder configuration. Third, I install Matroskasplitter. Fourth I …

2011年8月7日 · If those make videos too choppy, enable 10-bit output; this will at least give you dithering to avoid banding. Also enable the YV12 Chroma upsampling shader. Right click MPC, select Shaders, pre-resize pixel shaders, then YV12 Chroma upsampling. LAV splitter is also something you might want to get. It's the best media splitter out there.

2013年11月19日 · Need a little help to setup proper settings for MPC-HC. I'm using the latest version 1.7.0.7858 with LAV Filter. Some video files in MPC-HC playback is not smooth compare when I play the same video in WMP (Windows Media Player) with Windows 8.1 Pro 32 bit using 1.6ghz dual core Atom and ION...