Published on April 07, 2018 converting Keynote - Quicktime-files into samsung-tv mp4 0 minute read • lost+found geeknessosx ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -i keynote_qt_export.m4v -shortest -vcodec copy -c:a aac ./tv-playable.mp4