Binary package “mencoder” in ubuntu bionic

MPlayer's Movie Encoder

 MPlayer plays most MPEG, VOB, AVI, Ogg/OGM, VIVO,
 ASF/WMA/WMV, QT/MOV/MP4, FLI, RM, NuppelVideo, yuv4mpeg, FILM, RoQ, PVA files,
 supported by many native, XAnim, RealPlayer, and Win32 DLL codecs. It can
 also play VideoCD, SVCD, DVD, 3ivx, RealMedia, and DivX movies.
 .
 This package contains mencoder, a simple movie encoder, designed to
 encode MPlayer-playable movies
 (AVI/ASF/OGG/DVD/VCD/VOB/MPG/MOV/VIV/FLI/RM/NUV/NET) to other
 MPlayer-playable formats. It can encode with various codecs, like DivX4
 (1 or 2 passes), libavcodec, PCM/MP3/VBRMP3 audio. Also has stream
 copying and video resizing capabilities.