x265 wins MSU HEVC codec contest

According to x265 facebook post: https://www.facebook.com/x265project/posts/1636775903206155 The results can be seen from below figures Not sure about how accurate the results are. But the reported figures suggest HEVC is far from saving 50% bitrate compared with x264. Also, there are 265 codecs that are even significantly worse than x264, which is quite surprising. Seems long… Continue reading x265 wins MSU HEVC codec contest

Things need to be improved for Structural SIMilarity (SSIM) image quality index

For image quality assessment, Structural SIMilarity (SSIM) index can be considered as a breakthrough technology that change both academia and industry players. 10K+ citations and lots of moves in many public image/video projects had evident that, especially in video compression community. x264, one of the most popular H.264 video encoder, seems optimize SSIM during the… Continue reading Things need to be improved for Structural SIMilarity (SSIM) image quality index

264, 265, VP9…. –How to compare video codecs?

There are lots of articles talking about how to do video codec comparison. I’m writing my personal experience here to make a record for myself and hope it is helpful to others. As long as your business has video involved, I believe a codec is a must-have tool to facilitate the various operations. As far… Continue reading 264, 265, VP9…. –How to compare video codecs?

The meaning of CMake configuration during x265 compliation

If you don’t want compile your own x265 binary, here is a place to go for the binary directly: https://builds.x265.eu/ 1.BIN_INSTALL_DIR The executable file during make install will be put under /< BIN_INSTALL_DIR> 2.CHECKED_BUILD If checked, the error message will be detected during compliation and saved in x265_check_failures.txt 3.CMAKE_BUILD_TYPE Effective to single configured make, used… Continue reading The meaning of CMake configuration during x265 compliation

How to build API and CLI of x265

After computation complexity, license fee issue seems bringing big trouble to H.265/HEVC. Royalty-free codecs (VP9, Thor, Daala) become new threats to it. Would H.265/HEVC become successful in the near future? A big question mark. But from technique perspective, followed by the success of x264, x265 seems made steady progress towards practical application, especially the multi-platform… Continue reading How to build API and CLI of x265