<filter name="SSIM" category="Plugins to compare video quality" helpfile="ssim" type="clip">
<description>Filter to compare video quality (similar as psnr, but using a different video quality metric). An SSIM value is between 0 and 1, 1 meaning perfect quality. Note: if you use B frames under xvid, trim the first dummy frame of the xvid clip, and the last frame of the original clip.</description>
<description>results.csv is the file where obtained SSIM values will be written (this can be easily read in excel or notepad for those unfamiliar with the comma separated variables format) </description>