Match scene length to narration and write fuller narration lines

app.py

@@ -79,6 +79,7 @@ GLOBAL_DEFAULTS = {
     "aspect_ratio": "9:16",
     "target_seconds": 60,
     "clip_seconds": 8,
+    "scene_timing": "narration",
     "error_cooldown_minutes": 5,
     "work_hours_enabled": False,
     "work_days": "mon,tue,wed,thu,fri,sat,sun",
@@ -998,7 +999,7 @@ Every character is a cartoon: a cartoon animal, a cartoon creature, or a simple
 
 The Short has exactly {n} scenes of {clip} seconds each. Each scene has:
 "visual": a detailed, self-contained shot description of one still image (setting, action, mood, lighting). Name the characters but do not re-describe their appearance, that comes from "characters". Never mention on-screen text or words.
-"narration": one spoken line of at most {words} words.
+"narration": one spoken line of {max(4, words - 5)} to {words} words, so it fills most of the scene.
 
 Scene 1 must hook the viewer in the first 2 seconds. The final scene must deliver a payoff.
 
@@ -1494,7 +1495,11 @@ def media_duration(path):
 
 def render_scene(s, image, audio, out, aspect):
     w, h = (1080, 1920) if aspect == "9:16" else (1920, 1080)
-    dur = max(float(s["clip_seconds"]), media_duration(audio) + 0.6)
+    spoken = media_duration(audio)
+    if s.get("scene_timing", "narration") == "fixed":
+        dur = max(float(s["clip_seconds"]), spoken + 0.6)
+    else:
+        dur = max(2.5, spoken + 0.8)
     frames = int(dur * 30)
     vf = (
         f"[0:v]scale={w * 2}:{h * 2}:force_original_aspect_ratio=increase,crop={w * 2}:{h * 2},"

static/index.html

@@ -326,7 +326,8 @@ const FIELDS=[
 ["ollama_timeout","Ollama timeout (seconds)","select:120|300|600|900","Max wait per Ollama request before retrying","g"],
 ["aspect_ratio","Aspect ratio","select:9:16|16:9","","g"],
 ["target_seconds","Target length (seconds)","select:30|45|60|90|120|180","Split into scenes of the length below","g"],
-["clip_seconds","Seconds per scene","select:5|6|8|10|12","8 gives 7 scenes in a 60 second Short","g"],
+["clip_seconds","Seconds per scene","select:5|6|8|10|12","Sets how many scenes the story has and how long each narration line is. 8 gives 7 scenes","g"],
+["scene_timing","Scene timing","select:narration=Match the narration|fixed=Fixed length per scene","Match the narration moves to the next scene shortly after the voice finishes","g"],
 ["error_cooldown_minutes","Wait after error (minutes)","select:1|5|10|15|30|60","","g"]
 ];
 const DAYS=[["mon","Mon"],["tue","Tue"],["wed","Wed"],["thu","Thu"],["fri","Fri"],["sat","Sat"],["sun","Sun"]];