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Update th.sh

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romanwarlock 2019-08-17 20:22:21 +02:00 committed by GitHub
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commit 1120487207
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1 changed files with 13 additions and 13 deletions
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th.sh
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@ -22,7 +22,7 @@ if [[ $# != 4 ]]; then
echo "wrong number of arguments
Usage:
./thumbnails.sh NFRAMES TILE SIZE INPUT
. th.sh NFRAMES TILE SIZE INPUT
NFRAMES is the number of frames (thumbnails) to generate, e.g., 16;
TILE is in the form 'MxN' (where M * N should match NFRAMES), e.g., 4x4;
@ -37,27 +37,28 @@ Example:
"
return 1
fi
#ffmpeg -start_at_zero -copyts -ss 00:00:14 -i Rammstein\ -\ Radio.mp4 -vf "drawtext=fontfile=/path/to/Arial.ttf:fontsize=45:fontcolor=yellow:box=1:boxcolor=black:x=(W-tw)/2:y=H-th-10:text='%{pts\:gmtime\:0\:%H\\\\\\:%M\\\\\:%S}'" -vframes 1 output.png
NFRAMES=$1
TILE=$2
SIZE=$3
INPUT=$4
#DURATION=$(ffprobe -loglevel error -show_streams "$4" | grep duration= | cut -f2 -d= | head -1)
#duration in h:m:s for caption
DURX=$(ffmpeg -i "$4" 2>&1 | grep Duration | awk '{print $2}' | tr -d ,)
#duraion in seconds for thumnail generatin
DURATION=$(ffmpeg -i "$4" 2>&1 | grep "Duration"| cut -d ' ' -f 4 | sed s/,// | sed 's@\..*@@g' | awk '{ split($1, A, ":"); split(A[3], B, "."); print 3600*A[1] + 60*A[2] + B[1] }')
#resolution of video for caption
RES=$(ffmpeg -i "$4" 2>&1 | grep -oP 'Stream .*, \K[0-9]+x[0-9]+')
#filesize in Mb for catopn
FILESIZE=$(du -sm "$4" | awk '{print $1}')
# generate thumbnails in the /tmp folder
TMPDIR=/tmp/thumbnails-${RANDOM}/
mkdir $TMPDIR
#filame
for (( VARIABLE=0; VARIABLE<NFRAMES; VARIABLE++ ))
do
#time at which next snapshot is taken and avoiding blank last snapshot: seconds.xx
OFFSET=$(echo "scale=2;$VARIABLE*$DURATION/$NFRAMES+$DURATION/$NFRAMES/2" | bc)
#how many zeros we add to temp file thumbnail: bla0009.jpp bla0099.jpg bla0999.jpg
if [ $VARIABLE -gt 9 ];then
ZEROS="00"
if [ $VARIABLE -gt 99 ];then
@ -69,22 +70,21 @@ if [ $VARIABLE -gt 9 ];then
else
ZEROS="000"
fi
#ffmpeg -start_at_zero -copyts -ss $OFFSET -i "$4" -vf "drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf:fontsize=45:fontcolor=yellow:box=1:boxcolor=black:x=(W-tw)/2:y=H-th-10:text='%{pts\:gmtime\:0\:%H\\\\\\:%M\\\\\:%S}'" -vframes 1 ${TMPDIR}$ZEROS$VARIABLE.jpg
ffmpeg -start_at_zero -copyts -ss $OFFSET -i "$4" -vf "drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf:fontsize=45:fontcolor=white::shadowcolor=black:shadowx=2:shadowy=2:box=1:boxcolor=black@0:x=(W-tw)/40:y=H-th-10:text='%{pts\:gmtime\:0\:%H\\\\\\:%M\\\\\:%S}'" -vframes 1 ${TMPDIR}$ZEROS$VARIABLE.jpg
done
#combine thumbnails together
montage ${TMPDIR}*.jpg -background white -geometry +5+5 -tile $TILE ${TMPDIR}output.jpg
#put info about video in textfile
echo $4 >>${TMPDIR}myfile.txt
echo $RES >>${TMPDIR}myfile.txt
echo "$FILESIZE Mb" >>${TMPDIR}myfile.txt
echo $DURX >>${TMPDIR}myfile.txt
#convert textfile in jpg, NB modified policy.xml is needed
convert -size ${SIZE}x150 -fill black -interline-spacing 10 -background white -pointsize 20 -gravity west caption:@${TMPDIR}myfile.txt ${TMPDIR}text1.jpg
#resize combined thumbnails
convert ${TMPDIR}output.jpg -resize ${SIZE}x${SIZE} ${TMPDIR}th.jpg
#resize info's width to match combined thumbnails
thewidth=$(identify -ping -format %w ${TMPDIR}th.jpg)
convert ${TMPDIR}text1.jpg -crop ${thewidth}x150+0+0 ${TMPDIR}text.jpg
#combine info and thumbnails into output file
montage ${TMPDIR}text.jpg ${TMPDIR}th.jpg -background white -geometry +0+0 -tile 1x2 thumbnails-${RANDOM}.jpg