I have been using the Poppler library for some time, over a series of various projects. It’s an open source set of libraries and command line tools, very useful for dealing with PDF files. Poppler is targeted primarily for the Linux environment, but

c-ares : 1.14.0版本 exosip2 : 5.0.0版本 osip2 : 5.0.0版本 ffmpeg : 4.2.2版本