From my understanding. v2 I can include x264 either dynamically linked or statically linked into my software and sell the software but wouldn't need to release

From my understanding. v2 I can include x264 either dynamically linked or statically linked into my software and sell the software but wouldn't need to release the source code to my software. If I make any alteration or modification to the x264 source code (eg.. performance/bug fix) then I'm bound by the license agreement to make such modification available. v3 very similar but under the license agreement I have to make my source code and any derivative libraries that my software package source code available under the same license.