../../src/Media/MediaSourceElement.cpp:163:11: error: 'CODEC_ID_MPEG2VIDEO' was not declared in this scope case CODEC_ID_MPEG2VIDEO:

[adhirmndl]

../../src/Media/MediaSourceElement.cpp:163:11: error: 'CODEC_ID_MPEG2VIDEO' was not declared in this scope
case CODEC_ID_MPEG2VIDEO:
^~~~~~~~~~~~~~~~~~~
../../src/Media/MediaSourceElement.cpp:163:11: note: suggested alternative: 'AV_CODEC_ID_MPEG2VIDEO'
case CODEC_ID_MPEG2VIDEO:
^~~~~~~~~~~~~~~~~~~
AV_CODEC_ID_MPEG2VIDEO
../../src/Media/MediaSourceElement.cpp:175:11: error: 'CODEC_ID_MPEG4' was not declared in this scope
case CODEC_ID_MPEG4:
^~~~~~~~~~~~~~
../../src/Media/MediaSourceElement.cpp:175:11: note: suggested alternative: 'AV_CODEC_ID_MPEG4'
case CODEC_ID_MPEG4:
^~~~~~~~~~~~~~
AV_CODEC_ID_MPEG4
../../src/Media/MediaSourceElement.cpp:181:11: error: 'CODEC_ID_H264' was not declared in this scope
case CODEC_ID_H264:

[OtherCrashOverride]

This indicates you are not using a supported version of libav/ffmpeg. The "master" branch only supports Ubuntu 16.04 and the "bionic" branch only supports Ubuntu 18.04. Other distros and versions are not supported.