Site: scroll tour with live clips, beat-reactive desk and speaker, road playground, night wave, film on an isometric screen

site/video/web.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Builds web clips, posters and the launch film.
+set -euo pipefail
+
+here="$(cd "$(dirname "$0")" && pwd)"
+rec="$here/out/rec"
+clips="$here/../public/clips"
+film="$here/../public/film"
+mkdir -p "$clips" "$film"
+
+# name source start end
+cuts=(
+  "doc doc 3.0 10.6"
+  "table table 16.0 23.6"
+  "show show-play 2.6 9.6"
+  "pdf pdf 8.8 16.3"
+  "tree tree 9.5 16.8"
+  "mark mark 5.4 13.4"
+)
+
+fade=0.2
+size="scale=1280:720:flags=lanczos,fps=30,format=yuv420p"
+
+for cut in "${cuts[@]}"; do
+  read -r name src start end <<<"$cut"
+  len=$(echo "$end - $start" | bc)
+  at=$(echo "$len - $fade" | bc)
+  one=$(echo "$start + 0.05" | bc)
+  frames=$(echo "$len * 30 / 1" | bc)
+  # Last 0.2 s fades into the first frame.
+  graph="[0:v]trim=start=$start:end=$end,setpts=PTS-STARTPTS,$size[a];
+[0:v]trim=start=$start:end=$one,setpts=PTS-STARTPTS,$size,trim=end_frame=1,tpad=stop_mode=clone:stop_duration=$fade[b];
+[a][b]xfade=transition=fade:duration=$fade:offset=$at[v]"
+  ffmpeg -v error -y -i "$rec/$src.mp4" -filter_complex "$graph" -map "[v]" -frames:v "$frames" -an \
+    -c:v libx264 -profile:v high -preset slow -crf 24 -pix_fmt yuv420p \
+    -movflags +faststart "$clips/$name.mp4"
+  ffmpeg -v error -y -i "$clips/$name.mp4" -an \
+    -c:v libvpx-vp9 -crf 36 -b:v 0 -row-mt 1 -deadline good -cpu-used 2 \
+    "$clips/$name.webm"
+  ffmpeg -v error -y -i "$clips/$name.mp4" -frames:v 1 -q:v 4 "$clips/$name.jpg"
+done
+
+src="$here/out/ElyOffice-launch.mp4"
+ffmpeg -v error -y -i "$src" -vf "scale=1920:1080:flags=lanczos,format=yuv420p" \
+  -c:v libx264 -profile:v high -preset slow -crf 23 \
+  -c:a aac -b:a 160k -movflags +faststart "$film/ely-office.mp4"
+ffmpeg -v error -y -ss 17 -i "$src" -frames:v 1 -q:v 3 "$film/poster.jpg"
+
+ls -l "$clips" "$film"