var fDesc=new Array(); fDesc[0] = "This codec probably won't be all that useful to anyone who isn't involved in developing image processing or compression/decompression software. YV12 is a planar Y'CbCr 4:2:0 image format, and is often used as an intermediate format by reference codecs such as the ISO/IEC MPEG-4 video decoder reference code. It's not a very good choice for end users, because it doesn't really compress video that much, and it stores pixel data in a manner that's not particularly convenient for playback. That said, you might find this codec useful if you're a developer working in image processing. As mentioned above, YV12 is a planar format, meaning that for each image, the luma data for all pixels is stored consecutively, followed by the chroma data - this method of accessing pixel components is convenient for many image processing techniques. The YV12 QuickTime Codec consists of an image decompressor component, an image compressor component, a movie importer component, and a movie exporter component."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }