Hey Patrick,
I'm happy to report I worked around the bug by
changing line 6 of
/usr/share/kdenlive/export/profiles.xml
from
acodec=vorbis
to
acodec=libvorbis
Someone using the nick name "furq" on freenode's
#ffmpeg channel showed me that ffmpeg's web site
recommends using libvorbis
https://trac.ffmpeg.org/wiki/Encode/HighQualityAudio#AudioencodersFFmpegcanuse
I reported the bug upstream at
https://bugs.kde.org/show_bug.cgi?id=388503
Maybe you'd like to change line 6 of debian's copy
of
/usr/share/kdenlive/export/profiles.xml
Thanks,
Kingsley
--
Time is the fire in which we all burn.