This is the video compression codec used to shrink the massive file size of a Blu-ray down to a downloadable format. x264 is a free software library for encoding video streams into the H.264/MPEG-4 AVC format. It revolutionized video sharing by allowing high-definition video to be compressed efficiently without losing noticeable visual quality.
The string describes the following features of this particular file: this aint avatar 2010 xxx 3d sbs 720p bluray x264 ac3 fix
The video resolution, indicating a progressive scan resolution of 1280x720 pixels. While 1080p was available, 720p was frequently chosen by internet users to balance visual quality with manageable file sizes during an era when residential internet bandwidth was significantly limited compared to modern fiber-optic standards. This is the video compression codec used to