folders

2025-10-25 18:17:56 +01:00
parent d5fa0bcb12
commit 9e7672c05a
39 changed files with 689 additions and 0 deletions
--- a/text.sh
+++ b/text.sh
@@ -0,0 +1,123 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# title_one_line.sh — one centered line with fade in/out in a time window
+# Requires: ffmpeg with libfreetype
+
+show_help() {
+  cat <<'EOF'
+Usage:
+  title_one_line.sh -i INPUT -o OUTPUT --text "YOUR TEXT" [options]
+
+Required:
+  -i, --input      Input video
+  -o, --output     Output video
+      --text       Text to display (one line)
+
+Timing:
+  --start          Start time seconds (default: 30)
+  --end            End time seconds (default: 34)
+  --fade-in        Fade-in seconds (default: 0.6)
+  --fade-out       Fade-out seconds (default: 0.6)
+
+Style:
+  --fs             Font size (default: 78)
+  --dy             Vertical nudge in px (default: 0)  # negative = up
+  --font           Font family (FontConfig), e.g. "DejaVu Sans"
+  --fontfile       Path to TTF/OTF (overrides --font)
+  --shadow         1 to add shadow, 0 to disable (default: 1)
+  --color          Text color (default: white)
+
+Encoding:
+  --crf            x264 CRF (default: 18)
+  --preset         x264 preset (default: medium)
+
+Examples:
+  title_one_line.sh -i in.mp4 -o out.mp4 --text "ROSE ASH VILLAGE HALL presents"
+  title_one_line.sh -i in.mp4 -o out.mp4 --text "Summer Fête" --start 12 --end 18 --fs 90 --dy -30
+EOF
+}
+
+# --- defaults ---
+INPUT=""
+OUTPUT=""
+TEXT=""
+START="30"
+END="34"
+FADEIN="0.6"
+FADEOUT="0.6"
+FS="78"
+DY="0"
+FONT=""
+FONTFILE=""
+SHADOW="1"
+COLOR="white"
+CRF="18"
+PRESET="medium"
+
+# --- parse args ---
+[[ $# -eq 0 ]] && { show_help; exit 1; }
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -i|--input)   INPUT="${2:-}"; shift 2;;
+    -o|--output)  OUTPUT="${2:-}"; shift 2;;
+    --text)       TEXT="${2:-}"; shift 2;;
+    --start)      START="${2:-}"; shift 2;;
+    --end)        END="${2:-}"; shift 2;;
+    --fade-in)    FADEIN="${2:-}"; shift 2;;
+    --fade-out)   FADEOUT="${2:-}"; shift 2;;
+    --fs)         FS="${2:-}"; shift 2;;
+    --dy)         DY="${2:-}"; shift 2;;
+    --font)       FONT="${2:-}"; shift 2;;
+    --fontfile)   FONTFILE="${2:-}"; shift 2;;
+    --shadow)     SHADOW="${2:-}"; shift 2;;
+    --color)      COLOR="${2:-}"; shift 2;;
+    --crf)        CRF="${2:-}"; shift 2;;
+    --preset)     PRESET="${2:-}"; shift 2;;
+    -h|--help)    show_help; exit 0;;
+    *) echo "Unknown arg: $1"; echo; show_help; exit 1;;
+  esac
+done
+
+[[ -z "$INPUT" || -z "$OUTPUT" || -z "$TEXT" ]] && { echo "Error: -i, -o and --text are required."; exit 1; }
+command -v ffmpeg >/dev/null 2>&1 || { echo "Error: ffmpeg not found."; exit 1; }
+
+# Escape text for drawtext (backslash, colon, percent, and single quote)
+esc() {
+  local s="$1"
+  s="${s//\\/\\\\}"   # backslashes
+  s="${s//:/\\:}"     # colons
+  s="${s//%/\\%}"     # percent
+  s="${s//\'/\\\'}"   # single quotes
+  echo "$s"
+}
+ETEXT="$(esc "$TEXT")"
+
+# Font options: prefer fontfile, else family, else default
+FONT_OPTS=""
+if [[ -n "$FONTFILE" ]]; then
+  FONT_OPTS="fontfile='${FONTFILE}'"
+elif [[ -n "$FONT" ]]; then
+  FONT_OPTS="font='${FONT}'"
+fi
+
+# Optional shadow for contrast
+SHADOW_OPTS=""
+if [[ "$SHADOW" == "1" ]]; then
+  SHADOW_OPTS=":shadowcolor=black@0.6:shadowx=2:shadowy=2"
+fi
+
+# Alpha expression: fade in, hold, fade out (commas escaped)
+ALPHA="if(lt(t\\,${START})\\,0\\,if(lt(t\\,${START}+${FADEIN})\\,(t-${START})/${FADEIN}\\,if(lt(t\\,${END}-${FADEOUT})\\,1\\,if(lt(t\\,${END})\\,(${END}-t)/${FADEOUT}\\,0))))"
+
+DT="drawtext=${FONT_OPTS}:text='${ETEXT}':fontcolor=${COLOR}:fontsize=${FS}${SHADOW_OPTS}:x=(w-text_w)/2:y=(h-text_h)/2+${DY}:alpha='${ALPHA}'"
+
+VF="${DT}"
+
+echo "Running:"
+echo " ffmpeg -hide_banner -y -i '$INPUT' -vf \"$VF\" -c:v libx264 -crf $CRF -preset $PRESET -c:a copy '$OUTPUT'"
+
+ffmpeg -hide_banner -y -i "$INPUT" -vf "$VF" -c:v libx264 -crf "$CRF" -preset "$PRESET" -c:a copy "$OUTPUT"
+
+echo "Done: $OUTPUT"