WeChat VoIP calling

2.2.1

Added:

• Added the video_res_mode downlink MJPEG resolution mode, with fit_screen for proportional screen fitting and fill_screen for proportional scaling and center-cropping to fill the screen

2.2.0

Added:

• amr / opus audio format support
• Support for different audio formats in upstream and downstream directions
• Support for different video formats in upstream and downstream directions

0.1.0

• Changes: First public release of WeChat VoIP calling