Debian unstable amd64
Apparently you were aware on this problem c608ef6
The build fail with
/build/libopenshot-dmo-0.5.0/src/FFmpegReader.cpp: In member function ‘virtual void openshot::FFmpegReader::Open()’: /build/libopenshot-dmo-0.5.0/src/FFmpegReader.cpp:569:57: error: ‘AVStream’ {aka ‘struct AVStream’} has no member named ‘nb_side_data’ 569 | for (int j = 0; j < st->nb_side_data; j++) { | ^~~~~~~~~~~~ /build/libopenshot-dmo-0.5.0/src/FFmpegReader.cpp:570:69: error: ‘AVStream’ {aka ‘struct AVStream’} has no member named ‘side_data’ 570 | AVPacketSideData *sd = &st->side_data[j]; | ^~~~~~~~~ ninja: build stopped: subcommand failed.