Script - commercialremover

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Revision as of 13:48, 22 November 2013 by Wagnerrp (Talk | contribs)

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This script was started based upon the old script, which was needed as part of the MythGrid plugin development. It was necessary to change it so significantly to get the required behavior, that it seemed cleaner to post it as a new script.

Warning.png Warning: This behavior is not supported within the mythutil/mythtranscode programs themselves as the commercial detector is not considered sufficiently accurate to permanently remove sections of video without a manual confirmation.


In order to run the script as a user job, add the following command as a user job in your backend setup.

commercialremover.sh %DIR% %FILE% %CHANID% %STARTTIMEUTC%


Important.png Note: This script reads database configuration from mysql.txt, however recent versions of MythTV no longer read or generate that file. Be sure to create the file with the required information to edit the database. Also, be sure that it can be read and that the user can edit /tmp/ folder, which will be used to store logs. Be aware, in its current state, the script will overwrite the original recording, which may not always work correctly.


The following script can be setup as a User Job to automatically flag and remove commercials from a recording. This script code was updated 11/21/2013 to work with MythTV 0.27. It should still work with 0.26 as well.


Script.png commercialremover.sh

#!/bin/sh

#####   commercialremover.sh Script for MythTV, updated 2013/11/21
###
##	Made for MythTV 0.26 also tested against 0.27, by jmw for MythGrid
##	https://sourceforge.net/projects/mythgrid/ 
##
##      This script requires the User Job to pass additional arguments under MythTV 0.26 or higher
##	User job command:
##      ‘commercialremover.sh %DIR% %FILE% %CHANID% %STARTTIMEUTC%'
###
#####
VIDEODIR=$1
FILENAME=$2
CHAN=$3
START=$4

# Sanity checking, to make sure everything is in order. Modified to check $CHAN and $START for MythTV 0.25 or higher support
if [ -z "$VIDEODIR" -o -z "$FILENAME" -o -z "$CHAN" -o -z "$START" ]; then
        echo "Usage: $0 <VideoDirectory> <FileName>"
        exit 5
fi
if [ ! -f "$VIDEODIR/$FILENAME" ]; then
        echo "File does not exist: $VIDEODIR/$FILENAME"
        exit 6
fi

#create temp file name
FILENAMEPREFIX="${CHAN}_${START}"
INFILEPATH="$VIDEODIR/$FILENAME"
TEMPFILEPATH="$INFILEPATH.tmp"

#log any output, be sure the user running this script can write to /tmp
LOGFOLDERPATH="/tmp/mythtv/commercialRemoval"
if [ ! -d "$LOGFOLDERPATH" ]; then
	mkdir -p $LOGFOLDERPATH
fi

LOG="$LOGFOLDERPATH/${FILENAMEPREFIX}.log"

echo "Generating cutlist..."
mythutil -q --gencutlist --chanid $CHAN --starttime $START > /dev/null 2>&1
ERROR=$?
if [ $ERROR -ne 0 ]; then
	echo "Generating cutlist failed for ${FILENAME} with error $ERROR" >> $LOG 2>&1
	exit $ERROR
fi

echo "Transcoding..."
mythtranscode --honorcutlist --allkeys -v all,jobqueue --showprogress --mpeg2 -i $INFILEPATH -o $TEMPFILEPATH > /dev/null 2>&1
ERROR=$?
if [ $ERROR -ne 0 ]; then
        echo "Transcoding failed for ${FILENAME} with error $ERROR" >> $LOG 2>&1
        exit $ERROR
fi

#Overwrite the original file with the transcoded file
mv -f $TEMPFILEPATH $INFILEPATH

#clear out the old cutlist
echo "Clearing cutlist..."
mythutil -q --clearcutlist --chanid $CHAN --starttime $START > /dev/null 2>&1

echo "Clearing skiplist..."
mythutil -q --clearskiplist --chanid $CHAN --starttime $START > /dev/null 2>&1

#Determine new filesize to update the db with
UPDATEDFILESIZE=$(du -b $INFILEPATH | awk '{print $1}') 

#Get mythtv database information from /etc/mythtv/mysql.txt file
DBSERVER=$( grep "DBHostName=" /etc/mythtv/mysql.txt | sed s/.*DBHostName=/\/ )
DBUSER=$( grep "DBUserName=" /etc/mythtv/mysql.txt | sed s/.*DBUserName=/\/ )
DBNAME=$( grep "DBName=" /etc/mythtv/mysql.txt | sed s/.*DBName=/\/ )
# Determine database password
DBPASS=$( grep "DBPassword=" /etc/mythtv/mysql.txt | sed s/.*DBPassword=/\/ )

# Update the database entry for the file size
echo "UPDATE recorded SET filesize='${UPDATEDFILESIZE}' WHERE chanid='${CHAN}' && starttime='${START}'" | mysql -h ${DBSERVER} -u ${DBUSER} --password=${DBPASS} ${DBNAME}

echo "Commericals removed for $FILENAME"
exit 0

Version:
0.27
Works with 0.27
Watch Article For Changes