There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use).
Rate control: constant quantizer, constant quality, single or multipass ABR, optional VBV.Inter B: partitions from 16x16 down to 8x8 (including skip/direct).Inter P: all partitions (from 16x16 down to 4x4).Intra: all macroblock types (16x16, 8x8, 4x4, and PCM with all predictions).B-frames as references / arbitrary frame order.It is widely used by television broadcasters and ISPs. x264 Video Codec forms the core of many web video services, such as Youtube, Facebook, Vimeo, and Hulu.
Support features necessary for many different applications, such as television broadcast, Blu-ray low-latency video applications, and web video. Gives the best quality, having the most advanced psychovisual optimizations. Achieves dramatic performance, encoding 4 or more 1080p streams in realtime on a single consumer-level computer. Provides best-in-class performance, compression, and features. X264 Video Codec is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC compression format and is released under the terms of the GNU GPL.
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