The following packages have unmet dependencies:
  ffmpeg: Depends: libavcodec58 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libavdevice58 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libavfilter7 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libavformat58 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libavresample4 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libavutil56 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libpostproc55 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libsdl2-2.0-0 (>= 2.0.9) but 2.0.8+dfsg1-1ubuntu1.18.04.4 is to be installed
          Depends: libswresample3 (= 7:4.1.4-1~deb10u1) but it is not installable
          Depends: libswscale5 (= 7:4.1.4-1~deb10u1) but it is not installable