ubuntu 20.04 ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory code example

Example 1: MovieWriter stderr: ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory

conda update ffmpeg

Example 2: ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory

# ffmpeg 3.4.1
conda install ffmpeg x264=20131218 -c conda-forge

# ffmpeg 4
conda install x264=='1!152.20180717' ffmpeg=4.0.2 -c conda-forge