../../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.