[mythtv] mythtranscode --fifoinfo on master

Sat Jan 4 06:10:37 UTC 2020

> On 3 Jan 2020, at 10:26 pm, mythtv-dev-request at mythtv.org wrote:
> 
>> I have a script that I use to crop recording cutlist and transcode to 
>> h264 using VAAPI acceleration via ffmpeg.? Now that I have been running 
>> master, I noticed the behavior of mythtranscode --fifoinfo has changed.
> 
> Does your reference just to frame-size reporting mean that in every 
> other way transcoding this way still works? In particular, is cleancut 
> still working? Seeing all the changes being made to the rendering 
> mechanism over recent times, I'd imagined cleancut was sure to become 
> broken. I'll be very pleased if it still works.
> 
> (For various reasons, I'm stuck on v29 so haven't tested any of this 
> myself).

Paul likewise I have a script that has not worked of late.
I was about to go exploring, but if you’d not mind sending me your script it would save me hard work

Cheers
James

As good faith i put my script here. I’m sure I started with someones efforts, but any links are long gone, so if any of this looks familiar appologies and thanks

[sandypit] /store/jam [989]% cat bin/h264cut.sh
#!/bin/bash
#Uses mythcommflag, ffmpeg, and mkvmerge to cut commercials out of h.264 encoded mpg files#
#set -x

echo -------------------------------------------------------
echo -n "recording eg 20181012 being /store/*201811012*.ts: "
read recname
echo -------------------------------------------------------
ls -lh /store/*$recname*.ts

echo -------------------------------------------------------
echo -n "Choose which file: "
read recname
echo -------------------------------------------------------
echo -n "now the name for the recording: "
read vidname
echo -------------------------------------------------------
if [[ $vidname == *\.* ]]; then
   usename=$vidname
else
   usename=$vidname".mp4";
fi

echo now choose the destinatin dir: $usename
echo 0=MythSeasons
echo 1=MythSeries
echo -n A D G J M P S V or \<cr\> for the prefix:
read prefix

case $prefix in
    0)
	dir="/store/Movies/MythSeasons";
	;;
    1)
	dir="/store/Movies/MythSeries";
	;;
    [Aa])
	dir="/store/Movies/MythA-C";
	;;
    [Dd])
	dir="/store/Movies/MythD-F";
	;;
    [Gg])
	dir="/store/Movies/MythG-I";
	;;
    [Jj])
	dir="/store/Movies/MythJ-L";
	;;
    [Mm])
	dir="/store/Movies/MythM-O";
	;;
    [Pp])
	dir="/store/Movies/MythP-R";
	;;
    [Ss])
	dir="/store/Movies/MythS-U";
	;;
    [Vv])
	dir="/store/Movies/MythV-Z";
	;;
    *)
	prefix=`echo $vidname | head -c 1`
	case $prefix in
	    [0123456789])
		dir="/store/Movies/Myth0-9"
		;;
	    [ABCabc])
		dir="/store/Movies/MythA-C"
		;;
	    [DEFdef])
		dir="/store/Movies/MythD-F"
		;;
	    [GHIghi])
		dir="/store/Movies/MythG-I"
		;;
	    [JKLjkl])
		dir="/store/Movies/MythJ-L"
		;;
	    [MNOmno])
	    dir="/store/Movies/MythM-O"
		;;
	    [PQRpqr])
		dir="/store/Movies/MythP-R"
		;;
	    [STUstu])
		dir="/store/Movies/MythS-U"
		;;
	    [VWXYZvwyzx])
		dir="/store/Movies/MythV-Z"
		;;
	esac
	;;
esac
echo -------------------------------------------------------

#cleanup $workdir
workdir="/store/TScut_work"
rm ${workdir}/*
echo dst:$dir/$usename
echo -------------------------------------------------------

if [ -z "`ls ${workdir}`" ]; then
    mkdir -p ${workdir}
fi
if [ ! -f $recname ]; then
    echo "[fatal] file doesn't exist, aborting."
    exit 1
fi

DBHostName=localhost
DBUserName=mythtv
DBPassword=mythtv
DBName=mythconverg

#connect to DB
mysqlconnect="mysql -N -h$DBHostName -u$DBUserName -p$DBPassword $DBName"
export mysqlconnect

#deteremine directory and filename
RECDIR=`dirname $recname`
BASENAME=`basename $recname`
tmp=`basename $BASENAME .ts`

logfile=$workdir/${BASENAME}.log
>${logfile}

#determine chanid and starttime from recorded table
echo "select chanid from recorded where basename=\"$BASENAME\";"
chanid=`echo "select chanid from recorded where basename=\"$BASENAME\";" | $mysqlconnect`

echo "select starttime from recorded where basename=\"$BASENAME\";"
starttime=`echo "select starttime from recorded where basename=\"$BASENAME\";" | $mysqlconnect`

#determine FPS (frames per second) from db, which is used to determine the seek time to extract video clips
fps=$(echo "scale=10;`echo "select data from recordedmarkup where chanid=$chanid AND starttime='$starttime' and type=32" | $mysqlconnect` / 1000.0" | bc)

if [ -z "$chanid" ] || [ -z "$starttime" ]
then
    echo "[fatal] Recording not found in MythTV database, script aborted."
    exit 1
elif [ -z "$fps" ]
then
    echo "[fatal] Frames per second value not found in MythTV database, script aborted."
    exit 1
fi

#lets make sure we have a cutlist before we proceed
if [ -z "`mythutil -q -q --getcutlist --chanid $chanid --starttime "$starttime" | sed 's/Cutlist: $//'`" ]; then
    echo "[fatal] no cutlist found"
    exit 1
fi

#cutlist provides a list of frames in the format start-end,[start1-end1,....] to cut
#we swap this list so that it provides the ranges of video we want in the format
# was cut 100-200 600-700 list is now 100,200-600,700-end singe play ie 100 implies 0-100
CUTLIST=`mythutil -q -q --getcutlist --chanid $chanid --starttime "$starttime" | sed 's/Cutlist: //' | \
    sed 's/-/ /g' | sed 's/^\|$/-/g' | sed 's/,/-/g'`

clipcount=0
for i in ${CUTLIST}
do
    start=`echo $i | sed 's/ //g' | sed 's/^\(.*\)-.*$/\1/'`
    end=`echo $i | sed 's/ //g' | sed 's/^.*-\(.*\)$/\1/'`

    #if $start is empty, deal with it
    if [ -z $start ]; then
	#set $start to 0
	start=0
	if [ $start -eq $end ]; then
	    continue
	fi
    fi
    #convert start into time in seconds (divide frames by frames per second)
    start=$(echo "scale=8; $start / $fps" | bc -l)
    #if $end is not null, we can do things

    if [ -n "$end" ]; then
	clipcount=$((++clipcount))
	end=$(echo "scale=8; $end / $fps" | bc -l)
	duration=`echo "$end - $start" | bc -l`

	echo "[ffmpeg] -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss $start -t $duration ${workdir}/${tmp}_${clipcount}.mp4" &>>${logfile}
	echo "[ffmpeg] -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss $start -t $duration ${workdir}/${tmp}_${clipcount}.mp4"
	ffmpeg -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss $start -t $duration ${workdir}/${tmp}_${clipcount}.mp4 &>>${logfile}
        #echo "file ${workdir}/${tmp}_${clipcount}.mp4"
        echo "file ${workdir}/${tmp}_${clipcount}.mp4" >> ${workdir}/file

    elif [ -z "$end" ]; then
	clipcount=$((++clipcount))
	echo "{ffmpeg} -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss ${start} ${workdir}/${tmp}_${clipcount}.mp4" &>>${logfile}
	echo "{ffmpeg} -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss ${start} ${workdir}/${tmp}_${clipcount}.mp4"

	ffmpeg -i ${RECDIR}/${BASENAME} -acodec copy -vcodec copy -ss ${start} ${workdir}/${tmp}_${clipcount}.mp4 &>>${logfile}
        echo #"file ${workdir}/${tmp}_${clipcount}.mp4"
        echo "file ${workdir}/${tmp}_${clipcount}.mp4" >> ${workdir}/file
    fi
done

echo
echo "[ffmpeg] -f concat -safe 0 -i $workdir/file -c copy $dir/$usename" &>>${logfile}
echo "[ffmpeg] -f concat -safe 0 -i $workdir/file -c copy $dir/$usename"
ffmpeg -f concat -safe 0 -i $workdir/file -c copy "$dir/$usename" &>> $logfile