sigio/nluug-video-intro-generator
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Cleanup script, use functions

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Mark Janssen 2025-06-10 22:07:08 +02:00
parent d7102a274d
commit 28c419e1d5
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2 changed files with 114 additions and 101 deletions
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189
generate.sh
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@ -1,108 +1,121 @@
#!/bin/bash #!/bin/bash
# Configuration
SOURCEDIR=$(pwd) SOURCEDIR=$(pwd)
PROJECT=$1 PROJECT=$1
BASETEMPLATE="nluug-title-template.svg" BASETEMPLATE="nluug-title-template.svg"
SOURCEFILE="event.svg" SOURCEFILE="event.svg"
VIDEODIR=${SOURCEDIR}/output VIDEODIR="${SOURCEDIR}/output"
PROJDIR=/tmp/nluug-intro-${PROJECT} PROJDIR="/tmp/nluug-intro-${PROJECT}"
if [ -z "${PROJECT}" ]; then
echo "Usage: $0 <project>"
exit 1
fi
if [ -z "$EVENTNAME" ]; then
echo "Specify EVENTNAME env-var"
exit 2
fi
if [ -z "$SPEAKERNAME" ]; then
echo "Specify SPEAKERNAME env-var"
exit 3
fi
if [ -z "$TITLE1" ] || [ -z "$TITLE2" ] || [ -z "$TITLE3" ]; then
echo "Specify TITLE1/TITLE2/TITLE3 env-vars"
exit 4
fi
# Usage:
# EVENTNAME="NLUUG Najaar 5 November 2024"
# MAXLENGTH="SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER"
#SPEAKERNAME="Example Speaker Name"
#TITLE1="Keynote: Some example title"
#TITLE2="With 3 lines, or use some whitespace"
#TITLE3="If less are needed"
CONV="convert -background black -fill black -alpha off" CONV="convert -background black -fill black -alpha off"
FRAMENUM=0 FRAMENUM=0
# Make project directory # Validate input
mkdir -p ${PROJDIR}; cd ${PROJDIR} validate_input() {
if [ -z "${PROJECT}" ]; then
echo "Usage: $0 <project>"
exit 1
fi
# Customize template to this event from base template if [ -z "$EVENTNAME" ]; then
awk -v eventname="$EVENTNAME" '{gsub(/EVENTNAMEEVENTNAME/, eventname); print}' "${SOURCEDIR}/${BASETEMPLATE}" > ${SOURCEFILE} echo "Specify EVENTNAME env-var"
exit 2
fi
# Create initial image without title/speaker info if [ -z "$SPEAKERNAME" ]; then
awk '{gsub(/SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER/, ""); gsub(/TITLE[123]/, ""); print}' ${SOURCEFILE} > frameclear.svg echo "Specify SPEAKERNAME env-var"
exit 3
fi
# Fade this image in from 100% transparent to 'normal' if [ -z "$TITLE1" ] || [ -z "$TITLE2" ] || [ -z "$TITLE3" ]; then
echo "Generate fade-in-from-black sequence" echo "Specify TITLE1/TITLE2/TITLE3 env-vars"
for i in $(seq 100 -3 0) exit 4
do fi
echo "Generate frame ${FRAMENUM}" }
${CONV} -colorize ${i}% frameclear.svg frame-${FRAMENUM}.webp
# Setup project directory
setup_project_dir() {
mkdir -p "${PROJDIR}" || { echo "Failed to create project directory"; exit 1; }
cd "${PROJDIR}" || { echo "Failed to change to project directory"; exit 1; }
}
# Generate frames
generate_frames() {
echo "Generate fade-in-from-black sequence"
for i in $(seq 100 -3 0); do
echo "Generate frame ${FRAMENUM}"
${CONV} -colorize ${i}% frameclear.svg "frame-${FRAMENUM}.webp"
((FRAMENUM++))
done
echo "Add speakername sequence"
SLEN=${#SPEAKERNAME}
for i in $(seq 0 ${SLEN}); do
echo "Generate frame ${FRAMENUM}"
SN="${SPEAKERNAME:0:i}"
awk -v sn="$SN" '{gsub(/TITLE[123]/, ""); gsub(/SPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > "${PROJDIR}/frame-${FRAMENUM}.svg"
${CONV} "frame-${FRAMENUM}.svg" "frame-${FRAMENUM}.webp"
((FRAMENUM++))
done
echo "Add title sequence"
for i in $(seq 0 40); do
echo "Generate frame ${FRAMENUM}"
T1="${TITLE1:0:i}"
T2="${TITLE2:0:i}"
T3="${TITLE3:0:i}"
awk -v t1="$T1" -v t2="$T2" -v t3="$T3" -v sn="$SN" '{gsub(/TITLE1/, t1); gsub(/TITLE2/, t2); gsub(/TITLE3/, t3); gsub(/SPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > "${PROJDIR}/frame-${FRAMENUM}.svg"
${CONV} "frame-${FRAMENUM}.svg" "frame-${FRAMENUM}.webp"
((FRAMENUM++))
done
echo "Generate completed title"
awk -v t1="$TITLE1" -v t2="$TITLE2" -v t3="$TITLE3" -v sn="$SPEAKERNAME" '{gsub(/TITLE1/, t1); gsub(/TITLE2/, t2); gsub(/TITLE3/, t3); gsub(/SPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > "${PROJDIR}/frame-${FRAMENUM}.svg"
${CONV} "frame-${FRAMENUM}.svg" "frame-${FRAMENUM}.webp"
LASTFRAME=$FRAMENUM
((FRAMENUM++)) ((FRAMENUM++))
done
echo "Add speakername sequence" for i in $(seq 0 1 100); do
SLEN=${#SPEAKERNAME} # Length of name echo "Duplicating frame ${FRAMENUM}"
# Copy a new frame, and fill in the speaker name 1 character at a time cp "frame-${LASTFRAME}.webp" "frame-${FRAMENUM}.webp"
for i in $(seq 0 ${SLEN}) ((FRAMENUM++))
do done
echo "Generate frame ${FRAMENUM}"
SN="${SPEAKERNAME:0:i}"
awk -v sn="$SN" '{gsub(/TITLE[123]/, ""); gsub(/SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > ${PROJDIR}/frame-${FRAMENUM}.svg
${CONV} frame-${FRAMENUM}.svg frame-${FRAMENUM}.webp
((FRAMENUM++))
done
echo "Add title sequence" echo "Generate fade-out-sequence"
# With speakername, now add the title, 1 char (per line) at a time for i in $(seq 0 3 100); do
for i in $(seq 0 40) echo "Generate frame ${FRAMENUM}"
do ${CONV} -colorize ${i}% "frame-${LASTFRAME}.svg" "frame-${FRAMENUM}.webp"
echo "Generate frame ${FRAMENUM}" ((FRAMENUM++))
T1="${TITLE1:0:i}" # Substring, first i characters done
T2="${TITLE2:0:i}" }
T3="${TITLE3:0:i}"
awk -v t1="$T1" -v t2="$T2" -v t3="$T3" -v sn="$SN" '{gsub(/TITLE1/, t1); gsub(/TITLE2/, t2); gsub(/TITLE3/, t3); gsub(/SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > ${PROJDIR}/frame-${FRAMENUM}.svg
${CONV} frame-${FRAMENUM}.svg frame-${FRAMENUM}.webp
((FRAMENUM++))
done
# Generate final frame, with full speakername + title # Render video
echo "Generate completed title" render_video() {
awk -v t1="$TITLE1" -v t2="$TITLE2" -v t3="$TITLE3" -v sn="$SPEAKERNAME" '{gsub(/TITLE1/, t1); gsub(/TITLE2/, t2); gsub(/TITLE3/, t3); gsub(/SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER/, sn); print}' ${SOURCEFILE} > ${PROJDIR}/frame-${FRAMENUM}.svg echo "Rendering to video"
${CONV} frame-${FRAMENUM}.svg frame-${FRAMENUM}.webp ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -framerate 25 -i frame-%d.webp -c:a aac -c:v libx264 -shortest -profile:v baseline -pix_fmt yuv420p -colorspace:v 'bt709' -color_primaries:v 'bt709' -color_trc:v 'bt709' -color_range:v 'tv' -r 30 "${VIDEODIR}/${PROJECT}-x264.mkv"
LASTFRAME=$FRAMENUM }
((FRAMENUM++))
# Now copy the rendered output of the last frame a few more times so we can read it before the video ends # Cleanup temporary files
for i in $(seq 0 1 100) cleanup() {
do echo "Cleaning up temporary files"
echo "Duplicating frame ${FRAMENUM}" rm -rf "${PROJDIR}"
cp frame-${LASTFRAME}.webp frame-${FRAMENUM}.webp }
((FRAMENUM++))
done
# Fade this image out over 100 frames back to the normal view # Main execution
echo "Generate fade-out-sequence" main() {
for i in $(seq 0 3 100) validate_input
do setup_project_dir
echo "Generate frame ${FRAMENUM}"
${CONV} -colorize ${i}% frame-${LASTFRAME}.svg frame-${FRAMENUM}.webp
((FRAMENUM++))
done
echo "Rendering to video" # Customize template to this event from base template
ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -framerate 25 -i frame-%d.webp -c:a aac -c:v libx264 -shortest -profile:v baseline -pix_fmt yuv420p -colorspace:v 'bt709' -color_primaries:v 'bt709' -color_trc:v 'bt709' -color_range:v 'tv' -r 30 ${VIDEODIR}/${PROJECT}-x264.mkv awk -v eventname="$EVENTNAME" '{gsub(/EVENTNAMEEVENTNAME/, eventname); print}' "${SOURCEDIR}/${BASETEMPLATE}" > ${SOURCEFILE}
# Create initial image without title/speaker info
awk '{gsub(/SPEAKERSPEAKERSPEAKERSPEAKER/, ""); gsub(/TITLE[123]/, ""); print}' ${SOURCEFILE} > frameclear.svg
generate_frames
render_video
cleanup
}
main

26
nluug-title-template.svg
View file

@ -48,12 +48,12 @@
inkscape:deskcolor="#000000" inkscape:deskcolor="#000000"
showgrid="false" showgrid="false"
inkscape:zoom="0.40174673" inkscape:zoom="0.40174673"
inkscape:cx="438.08695" inkscape:cx="301.18478"
inkscape:cy="311.1413" inkscape:cy="312.38587"
inkscape:window-width="2304" inkscape:window-width="2880"
inkscape:window-height="1347" inkscape:window-height="1699"
inkscape:window-x="0" inkscape:window-x="0"
inkscape:window-y="0" inkscape:window-y="64"
inkscape:window-maximized="1" inkscape:window-maximized="1"
inkscape:current-layer="g61" /> inkscape:current-layer="g61" />
<g <g
@ -71,9 +71,9 @@
transform="matrix(0.64500845,0,0,0.64500845,533.85281,-45.33011)"><tspan transform="matrix(0.64500845,0,0,0.64500845,533.85281,-45.33011)"><tspan
x="107.36523" x="107.36523"
y="802.76728" y="802.76728"
id="tspan300"><tspan id="tspan303"><tspan
dx="0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.00010681152" dx="0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.00010681152"
id="tspan298">EVENTNAMEEVENTNAME</tspan></tspan></text> id="tspan301">EVENTNAMEEVENTNAME</tspan></tspan></text>
<text <text
xml:space="preserve" xml:space="preserve"
id="text281-5" id="text281-5"
@ -81,21 +81,21 @@
transform="matrix(0.64500845,0,0,0.64500845,3.9182847,183.75561)"><tspan transform="matrix(0.64500845,0,0,0.64500845,3.9182847,183.75561)"><tspan
x="107.36523" x="107.36523"
y="802.76728" y="802.76728"
id="tspan304"><tspan id="tspan307"><tspan
dx="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.00010681152 0 0 0 0 0 -0.0001373291 0 0.00019836426 0 0 0 0 0.00010681152" dx="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.00010681152 0 0 0 0 0 -0.0001373291"
id="tspan302">SPEAKERSPEAKERSPEAKERSPEAKERSPEAKER id="tspan305">SPEAKERSPEAKERSPEAKERSPEAKER
</tspan></tspan><tspan </tspan></tspan><tspan
x="107.36523" x="107.36523"
y="952.76728" y="952.76728"
id="tspan306">TITLE1 id="tspan309">TITLE1
</tspan><tspan </tspan><tspan
x="107.36523" x="107.36523"
y="1102.7673" y="1102.7673"
id="tspan308">TITLE2 id="tspan311">TITLE2
</tspan><tspan </tspan><tspan
x="107.36523" x="107.36523"
y="1252.7673" y="1252.7673"
id="tspan310">TITLE3 id="tspan313">TITLE3
</tspan></text> </tspan></text>
<image <image
width="1914.1414" width="1914.1414"

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