Cheese recording not showing landlord coming into my trailer for repair

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13

I went ahead and came up with this script.

Hope that helps. :slight_smile:

Script "VIDEO__Record_LiveStreamWithTimeStamp.sh":
(EDIT: removed spurious "-t" in function)

#!/bin/bash

####################################################################################################
###
###	Script to simplify interraction with ffmpeg for recording from video stream
###
###	REF:  https://askubuntu.com/a/428501
###	REF:  https://ubuntu-mate.community/t/cheese-recording-not-showing-landlord-coming-into-my-trailer-for-repair/28390/9
###
####################################################################################################


####################################################################################################
recordSegment()
{

	###
	### Options used in REF which were not used by Pavlos in his response demo
	###
	#	-f video4linux2			\
	#	-s 640x480			\
	#	-r 30				\
	#	-vcodec libx264			\
	#	-vb 2000k 			\

	ffmpeg	\
	-i /dev/video0			\
	-preset ultrafast		\
	${segInterval}			\
	-vf "${textOverlayParameters}"	\
	-f mp4 "${videoFile}"
}


####################################################################################################
recordSlice()
{
	videoFile="${videoFilePref}_${sliceStart}.mp4"
	printf "\n\t Starting capture of video stream for next ${sliceMax} minutes as:\n\t -> ${videoFile}\n"

	recordSegment
}


####################################################################################################
###
###	'drawtext' option specifications
###
#fontSpec="fontfile=DejaVuSans-Bold.ttf"
fontSpec="fontfile=FreeMono.ttf"

#timeFmt="text='\\%T'"
timeFmt="text='\\%{localtime}'"

fontClr="[email protected]"
timePosn="x=7:y=460"

textOverlayParameters="drawtext=${fontSpec}:${timeFmt}:${fontClr}:${timePosn}"

#echo ${textOverlayParameters}
#exit


####################################################################################################

mode=1
timeTot=0
timeWait=0
count=0
label=0
videoFilePref="vidrecord"

sliceMax=0
 
while [ $# -gt 0 ]
do
	case "${1}" in
		"--single" )
			mode=1
			shift
			;;
		"--slices" )
			### number of recording slices to cover specified duration
			mode=2
			slices="${2}"
			shift ; shift
			;;
		"--duration" )
			### total recording time		[ units in hours ]
			timeTot="${2}"
			count=1
			shift ; shift
			;;
		"--wait" )
			### wait time before start		[ units in minutes ]
			timeWait="${2}"
			shift ; shift
			;;
		"--label" )
			videoFilePref="${2}"
			shift ; shift
			;;
		"--label_int" )
			label=1
			shift
			;;
		"--label_hms" )
			label=0
			shift
			;;
		"--debug" )
			dbg=1
			shift
			;;
		* ) printf "\n\t Invalid parameter used on command line. \n\t Only valid: [ --single | --slices {count} ] [ --duration {hours} ] [ --wait {minutes} ] [ --label {string} ] [ --label_int | --label_hms ] [ --debug ] \n Bye!\n\n" ; exit 1
	esac
done


####################################################################################################


if [ ${mode} -eq 1 ]
then
	test ${timeTot} -eq 0 && { printf "\n\t ERROR:  Need to specify total record time with '--duration {hours}' option.\n Bye!\n\n" ; exit 1 ; }
	
	if [ ${timeWait} -gt 0 ]
	then
		printf "\n\t WAITING ${timeWait} minute(s) before proceed with video recording ...\n\n"
		hTime=$( expr ${timeWait} \* 60 )
		sleep ${hTime}
	fi

	sliceMax=$( expr ${timeTot} \* 60 )
	segInterval="-t $( expr ${sliceMax} \* 60 )"

	if [ ${label} -eq 1 ]
	then
		sliceStart="$(date '+%Y%m%d_%H%M' )_${sliceMax}m"
	else
		sliceStart=$(date '+%Y%m%d_%H%M%S' )
	fi

	recordSlice
	exit
fi


if [ ${mode} -eq 2 ]
then
	test ${timeTot} -eq 0 && { printf "\n\t ERROR:  Need to specify total record time with '--duration {hours}' option.\n Bye!\n\n" ; exit 1 ; }

	if [ ${timeWait} -gt 0 ]
	then
		printf "\n\t WAITING ${timeWait} minute(s) before proceed with video recording ...\n\n"
		hTime=$( expr ${timeWait} \* 60 )
		sleep ${hTime}
	fi

	duration=$( expr ${timeTot} \* 60 )
	sliceMax=$( expr ${duration} / ${slices} )
	segInterval="-t $( expr ${sliceMax} \* 60 )"

	indx=0
	while [ ${indx} -lt ${slices} ]
	do
		if [ ${label} -eq 1 ]
		then
			sliceStart="$(date '+%Y%m%d_%H%M' )_${sliceMax}m"
		else
			sliceStart=$(date '+%Y%m%d_%H%M%S' )
		fi

		recordSlice
		indx=$( expr ${indx} + 1 )
	done
	exit
fi


exit

Session log for "--single" mode:

./VIDEO__Record_LiveStreamWithTimeStamp.sh --single --duration 2 --label_int

	 Starting capture of video stream for next 120 minutes as:
	 -> vidrecord_20241024_1741_120m.mp4

Session log with "--slices" mode:

./VIDEO__Record_LiveStreamWithTimeStamp.sh --slices 6 --duration 2 --label_hms

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_181047.mp4

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_183047.mp4

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_185047.mp4

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_191047.mp4

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_193047.mp4

	 Starting capture of video stream for next 20 minutes as:
	 -> vidrecord_20241024_195047.mp4
1 Like