Require libavcodec >= 57.37
Require libavcodec >= 57.37

In ffmpeg/doc/APIchanges:

> 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
>   Add a new audio/video encoding and decoding API with decoupled input
>   and output -- avcodec_send_packet(), avcodec_receive_frame(),
>   avcodec_send_frame() and avcodec_receive_packet().

Refs de9b79ec2dd73e5442c6bf0161669bcd8ca7d5be

Refs #2862 <https://github.com/Genymobile/scrcpy/issues/2862>

Genymobile/scrcpy,Genymobile/scrcpy,Genymobile/scrcpy