libsmpeg-dev binary package in Ubuntu Focal riscv64

 SMPEG (SDL MPEG Player Library) is a free MPEG1 video player library with
 sound support. Video playback is based on the ubiquitous Berkeley MPEG
 player, mpeg_play v2.2. Audio is played through a slightly modified
 mpegsound library, part of splay v0.8.2. SMPEG supports MPEG audio (MP3),
 MPEG-1 video, and MPEG system streams.
 .
 This package contains the development files (headers and static libraries)
 for libsmpeg. It is only needed if you want to compile programs that use
 SMPEG.

Source package