ffmpeg \
-i /media/01.jpg \
-vf "drawbox=x=1400:y=200:w=200:h=500:t=3:c=yellow" \
-update 1 \
-frames:v 1 \
/media/777003.jpg
-update <0, 1>
-q:v 1 -qmin 1
hls: ffmpeg ... -f hls master.m3u8
dash: ffmpeg ... -f dash master.mpd
ffmpeg ... -c copy master.ts