tool for playing with Raspberry Pi Global Shutter Camera crop values

GScrop

#!/bin/bash
# shellcheck disable=SC2154
# (silence shellcheck wrt $cam1 environment variable)
if [[ $# -lt 4 ]];  then  echo "Format: [narrow=1] [cam1=1] $0 width height framerate ms [us]"; exit;  fi
if [[ "$(( $1 % 2 ))" -eq 1 ]];  then echo "width has to be even"; exit;  fi
if [[ "$(( $2 % 2 ))" -eq 1 ]];  then echo "height has to be even"; exit;  fi
export SHTR=""; if [[ $# -gt 4 ]]; then SHTR="--shutter"; fi
export workaround=""; if [[ "" != "$(grep '=bookworm' /etc/os-release)" ]]; then workaround="--no-raw"; fi
export d=10; if [[ "" != "$(grep "Revision.*: ...17.$" /proc/cpuinfo)" ]]; then if [[ "$cam1" == "" ]]; then d=10; else d=11; fi; fi
for((m=0; m<=5; ++m))
do
    media-ctl -d /dev/media$m --set-v4l2 "'imx296 $d-001a':0 [fmt:SBGGR10_1X10/${1}x${2} crop:($(( (1440 - $1) / 2 )),$(( (1088 - $2) / 2 )))/${1}x$2]" -v; [ $? -eq 0 ] && break
done
libcamera-hello --list-cameras  ;echo
rm -f /dev/shm/tst.pts
if [[ "" != "$(grep "Revision.*: ...17.$" /proc/cpuinfo)" ]]
then
  rpicam-vid "$workaround" ${cam1:+--camera 1} --width "$1" --height "$2" --denoise cdn_off --framerate "$3" -t "$4" "$SHTR" "$5" -o /dev/shm/tst${cam1:+1}.mp4 -n  ;echo 
  ~/venv/bin/python ~/rpicam-apps/utils/timestamp.py --plot ${narrow:+--narrow} /dev/shm/tst${cam1:+1}.mp4
else
  libcamera-vid "$workaround" --width "$1" --height "$2" --denoise cdn_off --framerate "$3" --save-pts /dev/shm/tst.pts -t "$4" "$SHTR" "$5" -o /dev/shm/tst.h264 -n  ;echo 
  rm -f tstamps.csv && ptsanalyze /dev/shm/tst.pts
fi

GScrop can also be used as simple tool to set crop and framerate for other processing.

This posting describes a processing pipeline with all the details:
https://forums.raspberrypi.com/viewtopic.php?p=2306078#p2306078

In short it does this:

1. captures 224x96@536fps yuv420 video and pipes to next command
2. determines dark/bright for each frame while it is streamed and writes to file "err"
3. ffmpeg converts the yuv420 video to .mp4

Despite the quite concurrent processing, recorded framerate only dropped to 527fps from 536fps.