1] export from Kino as MPEG4 AVI single pass [btw. have to edit appropriate script in: /usr/share/kino/scripts/exports/ so that mp3 is libmp3lame to avoid halting at: "unknown encoder mp3"]
2] potentially use --force-smart on avidemux2_cli (in gneve.el)
With thanks to: Arnold Matyasi and Gabor Torok