Install libavdevice57 by entering the following commands in the terminal:
sudo apt update sudo apt install libavdevice57
Description:
FFmpeg library for handling input and output devices - runtime files
FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. . This library provides a generic framework for grabbing from and rendering to many common multimedia input/output devices, and supports several input and output devices, including Video4Linux2, VfW, DShow, and ALSA. . This package contains the runtime files.
Homepage: https://ffmpeg.org/
Version: 7:3.4.2-2
Section: universe/libs