Measure framerate really achieved by raspividyuv (varying mode, width, height, record time and requested framerate)

mfpsyuv

# mfpsyuv: measure framerate really achieved by raspividyuv, varying
#          mode, width, height, record time and requested framerate
#
#!/bin/bash

align () {
  let x=$(($1-1))
  echo $((x+$2-(x%$2)))
}

if [[ $# -lt 5 ]]; then echo "$0 mode w h t fps"; exit 1; fi

tst=`vcgencmd get_camera | grep detected=1`
if [[ $tst == "" ]]; then echo "no camera detected"; exit 1; fi

#time \
raspividyuv -md $1 -o /dev/shm/t.yuv -t $4 -fps $5 -w $2 -h $3
cmd=`wc --bytes /dev/shm/t.yuv | cut -f1 -d\ `\
"/($(align $2 32)*$(align $3 16)*3/2)/($4/1000)"

echo $cmd | bc -ql

https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=319199