diff --git a/library.json b/library.json
index aa7e699..f1af671 100644
--- a/library.json
+++ b/library.json
@@ -385,7 +385,8 @@
     "likes": 0,
     "createdAt": 1788188423583,
     "promptEn": "woman in white scared, dodging",
-    "lastPlayedAt": 1788253953855
+    "lastPlayedAt": 1788256884709,
+    "playCount": 1
   },
   {
     "id": "1597db4be561",
@@ -415,8 +416,9 @@
     "partition": "ref2va",
     "likes": 0,
     "createdAt": 1788186218619,
-    "lastPlayedAt": 1788253885823,
-    "promptEn": "woman in white evading, scared"
+    "lastPlayedAt": 1788256608572,
+    "promptEn": "woman in white evading, scared",
+    "playCount": 1
   },
   {
     "id": "6cb4eb75ee09",
@@ -447,7 +449,8 @@
     "likes": 0,
     "createdAt": 1788181569491,
     "promptEn": "a massive warship glides through the stars, the bridge suddenly shakes hard",
-    "lastPlayedAt": 1788254390052
+    "lastPlayedAt": 1788256956743,
+    "playCount": 1
   },
   {
     "id": "44bf5b969e94",
@@ -698,7 +701,8 @@
     "likes": 0,
     "createdAt": 1788039783070,
     "promptEn": "silver-haired idol backstage, red light pulsing, offering a blood-red contract",
-    "lastPlayedAt": 1788251726803
+    "lastPlayedAt": 1788256740633,
+    "playCount": 1
   },
   {
     "id": "75bdbacd3012",
@@ -713,7 +717,8 @@
     "likes": 0,
     "createdAt": 1788039782992,
     "promptEn": "silver-haired idol backstage, red light pulsing, offering a blood-red contract",
-    "lastPlayedAt": 1788250966325
+    "lastPlayedAt": 1788256952747,
+    "playCount": 1
   },
   {
     "id": "69e75a6b3997",
@@ -728,7 +733,8 @@
     "likes": 0,
     "createdAt": 1788027833836,
     "promptEn": "wounded hunter at a ruined subway dungeon entrance, lightning flickers, pointing into the tunnel",
-    "lastPlayedAt": 1788254268003
+    "lastPlayedAt": 1788256770648,
+    "playCount": 1
   },
   {
     "id": "cde399c27dc4",
@@ -867,7 +873,8 @@
     "likes": 0,
     "createdAt": 1788025642732,
     "promptEn": "Vecna reaching out a claw in his lair in the Upside Down, red lightning",
-    "lastPlayedAt": 1788254043902
+    "lastPlayedAt": 1788256948747,
+    "playCount": 1
   },
   {
     "id": "00862f966c3f",
@@ -1072,7 +1079,8 @@
     "likes": 0,
     "createdAt": 1788019483999,
     "promptEn": "constable rushes in, glances back at the door, then talks to the woman behind the screen",
-    "lastPlayedAt": 1788252139001
+    "lastPlayedAt": 1788256844693,
+    "playCount": 1
   },
   {
     "id": "998e3e6f9a2f",
@@ -1541,7 +1549,8 @@
     "likes": 0,
     "createdAt": 1788010775613,
     "promptEn": "facing Voldemort, stayed passive and got cornered",
-    "lastPlayedAt": 1788254061908
+    "lastPlayedAt": 1788256874709,
+    "playCount": 1
   },
   {
     "id": "795842efa4a1",
@@ -1571,7 +1580,8 @@
     "likes": 0,
     "createdAt": 1788010299688,
     "promptEn": "facing Thanos, exploiting a flaw to counter him",
-    "lastPlayedAt": 1788251102950
+    "lastPlayedAt": 1788256914727,
+    "playCount": 1
   },
   {
     "id": "469294a4ed09",
@@ -1586,7 +1596,8 @@
     "likes": 0,
     "createdAt": 1788010062535,
     "promptEn": "facing Thanos, held the goal but paid a price",
-    "lastPlayedAt": 1788254091920
+    "lastPlayedAt": 1788256578563,
+    "playCount": 1
   },
   {
     "id": "324b84ebc607",
@@ -1633,7 +1644,8 @@
     "likes": 0,
     "createdAt": 1788009346020,
     "promptEn": "battlefield on Titan, the last chance to stop Thanos",
-    "lastPlayedAt": 1788252467159
+    "lastPlayedAt": 1788256852697,
+    "playCount": 1
   },
   {
     "id": "66a96c6bc7cb",
@@ -1725,7 +1737,8 @@
     "likes": 0,
     "createdAt": 1788007915610,
     "promptEn": "in the ruined city, exploiting a flaw to counter Tomura",
-    "lastPlayedAt": 1788252961326
+    "lastPlayedAt": 1788256800671,
+    "playCount": 1
   },
   {
     "id": "f67685cd6862",
@@ -1771,7 +1784,8 @@
     "likes": 0,
     "createdAt": 1788007201908,
     "promptEn": "breaking into the palace, Neferpitou stalling to protect the king",
-    "lastPlayedAt": 1788254139946
+    "lastPlayedAt": 1788256816681,
+    "playCount": 1
   },
   {
     "id": "628026375795",
@@ -1880,7 +1894,8 @@
     "likes": 0,
     "createdAt": 1788005541640,
     "promptEn": "facing Frieza, went in head-on and got seen through",
-    "lastPlayedAt": 1788253741753
+    "lastPlayedAt": 1788256826688,
+    "playCount": 1
   },
   {
     "id": "574b47b00316",
@@ -2160,7 +2175,8 @@
     "likes": 0,
     "createdAt": 1788001428705,
     "promptEn": "in the ruins of Konoha, exploiting a flaw to counter Pain",
-    "lastPlayedAt": 1788253511622
+    "lastPlayedAt": 1788256774651,
+    "playCount": 1
   },
   {
     "id": "e486fab4c24d",
@@ -2207,7 +2223,8 @@
     "likes": 0,
     "createdAt": 1788000812932,
     "promptEn": "facing Pain, went in head-on and got seen through",
-    "lastPlayedAt": 1788253905836
+    "lastPlayedAt": 1788256552547,
+    "playCount": 1
   },
   {
     "id": "f691ac021df0",
@@ -2318,7 +2335,8 @@
     "likes": 0,
     "createdAt": 1787999397097,
     "promptEn": "facing Sakazuki, stayed passive and got cornered",
-    "lastPlayedAt": 1788253761764
+    "lastPlayedAt": 1788256856695,
+    "playCount": 1
   },
   {
     "id": "88923aaf57f3",
@@ -2412,7 +2430,8 @@
     "likes": 0,
     "createdAt": 1787831362083,
     "promptEn": "constable promises to get her out safely if she trusts him",
-    "lastPlayedAt": 1788253719743
+    "lastPlayedAt": 1788256588563,
+    "playCount": 1
   },
   {
     "id": "5ede61c01b22",
@@ -2506,7 +2525,8 @@
     "likes": 0,
     "createdAt": 1787738044140,
     "promptEn": "constable carefully checks the door and window latches, she watches from behind the screen",
-    "lastPlayedAt": 1788252857278
+    "lastPlayedAt": 1788256778656,
+    "playCount": 1
   },
   {
     "id": "cfbef6e37ae4",
@@ -2616,7 +2636,8 @@
     "likes": 0,
     "createdAt": 1787708686397,
     "promptEn": "constable accepts the invitation, moves to sit on a stool closer to the screen",
-    "lastPlayedAt": 1788254145947
+    "lastPlayedAt": 1788256558556,
+    "playCount": 1
   },
   {
     "id": "ad611bcbd06b",
@@ -2854,7 +2875,8 @@
     "likes": 0,
     "createdAt": 1787674737743,
     "promptEn": "constable slowly looks around the room, discovers her watching him motionlessly through the screen",
-    "lastPlayedAt": 1788253445593
+    "lastPlayedAt": 1788256932741,
+    "playCount": 1
   },
   {
     "id": "c74118d0413f",
@@ -2933,7 +2955,8 @@
     "likes": 0,
     "createdAt": 1787674660698,
     "promptEn": "constable smashes the bronze mirror on the table, it shatters, she watches from behind the screen",
-    "lastPlayedAt": 1788248649121
+    "lastPlayedAt": 1788256696614,
+    "playCount": 1
   },
   {
     "id": "ed77b83851a2",
@@ -2964,7 +2987,8 @@
     "likes": 0,
     "createdAt": 1787674642026,
     "promptEn": "constable enters from the side and sits down on a stool by the lamp to rest",
-    "lastPlayedAt": 1788251330505
+    "lastPlayedAt": 1788256726628,
+    "playCount": 1
   },
   {
     "id": "fe7ffbe65653",
@@ -3120,8 +3144,9 @@
     "partition": "ref2va",
     "likes": 0,
     "createdAt": 1787652321725,
-    "lastPlayedAt": 1788250646200,
-    "promptEn": "constable talking to the woman through the screen"
+    "lastPlayedAt": 1788256572557,
+    "promptEn": "constable talking to the woman through the screen",
+    "playCount": 1
   },
   {
     "id": "31ade4712105",
@@ -3278,7 +3303,8 @@
     "likes": 0,
     "createdAt": 1787615240988,
     "promptEn": "clay fox sprints off a cliff, slow-mo leap over the canyon",
-    "lastPlayedAt": 1788251894893
+    "lastPlayedAt": 1788256758642,
+    "playCount": 1
   },
   {
     "id": "db125dc6a831",
@@ -3308,7 +3334,8 @@
     "likes": 0,
     "createdAt": 1787588547172,
     "promptEn": "product website scrolling down with flashy effects",
-    "lastPlayedAt": 1788251228453
+    "lastPlayedAt": 1788256804674,
+    "playCount": 1
   },
   {
     "id": "2e18bf09b46a",
@@ -3432,7 +3459,8 @@
     "likes": 0,
     "createdAt": 1787588541726,
     "promptEn": "woman opens the trunk on a desert road, takes out a bag",
-    "lastPlayedAt": 1788254335882
+    "lastPlayedAt": 1788256832684,
+    "playCount": 1
   },
   {
     "id": "97846542ab09",
@@ -3495,7 +3523,8 @@
     "likes": 0,
     "createdAt": 1787588114381,
     "promptEn": "underground rap duo freestyling at the camera",
-    "lastPlayedAt": 1788253391568
+    "lastPlayedAt": 1788256628586,
+    "playCount": 1
   },
   {
     "id": "58a439a93c02",
@@ -3589,7 +3618,8 @@
     "likes": 0,
     "createdAt": 1787576798050,
     "promptEn": "man says he's willing to give her his heart",
-    "lastPlayedAt": 1788252199033
+    "lastPlayedAt": 1788256716625,
+    "playCount": 1
   },
   {
     "id": "57f2c6fa351d",
@@ -3635,8 +3665,9 @@
     "partition": "text",
     "likes": 0,
     "createdAt": 1787576358982,
-    "lastPlayedAt": 1788253923842,
-    "promptEn": "man apologizes, says something outside was chasing him"
+    "lastPlayedAt": 1788256794665,
+    "promptEn": "man apologizes, says something outside was chasing him",
+    "playCount": 1
   },
   {
     "id": "9fca8054035f",
@@ -3681,7 +3712,8 @@
     "likes": 0,
     "createdAt": 1787575164928,
     "promptEn": "man apologizes, says something outside was chasing him",
-    "lastPlayedAt": 1788249631916
+    "lastPlayedAt": 1788256880712,
+    "playCount": 1
   },
   {
     "id": "250fad90393c",
@@ -3918,7 +3950,8 @@
     "likes": 0,
     "createdAt": 1787470100107,
     "promptEn": "MiniMax H3 brand motion graphics, a dot growing into a network",
-    "lastPlayedAt": 1788248973345
+    "lastPlayedAt": 1788256862702,
+    "playCount": 1
   },
   {
     "id": "194e9bd77da6",
@@ -3963,7 +3996,8 @@
     "likes": 0,
     "createdAt": 1787470099306,
     "promptEn": "late-night laundromat footage mixed with glowing hand-drawn animation",
-    "lastPlayedAt": 1788254294016
+    "lastPlayedAt": 1788256744635,
+    "playCount": 1
   },
   {
     "id": "c0e23beb4132",
@@ -4073,7 +4107,8 @@
     "likes": 0,
     "createdAt": 1787450754171,
     "promptEn": "protagonist leaps across rooftops fleeing pursuers",
-    "lastPlayedAt": 1788253279519
+    "lastPlayedAt": 1788256646594,
+    "playCount": 1
   },
   {
     "id": "fd0183c54763",
@@ -4289,7 +4324,8 @@
     "likes": 0,
     "createdAt": 1787412952086,
     "promptEn": "protagonist leaps across rooftops fleeing pursuers",
-    "lastPlayedAt": 1788253367553
+    "lastPlayedAt": 1788256920735,
+    "playCount": 1
   },
   {
     "id": "59fd7a087f5b",
@@ -4492,7 +4528,8 @@
     "likes": 0,
     "createdAt": 1787367454249,
     "promptEn": "golden portal opens, man in green jacket throws a glowing spear",
-    "lastPlayedAt": 1788252831263
+    "lastPlayedAt": 1788256850694,
+    "playCount": 1
   },
   {
     "id": "c48af2f34e62",
@@ -4523,7 +4560,8 @@
     "likes": 0,
     "createdAt": 1787367453839,
     "promptEn": "golden portal opens, man in green jacket throws a glowing spear",
-    "lastPlayedAt": 1788254041895
+    "lastPlayedAt": 1788256642593,
+    "playCount": 1
   },
   {
     "id": "8402adae59dc",
@@ -4697,7 +4735,8 @@
     "likes": 0,
     "createdAt": 1787304031103,
     "promptEn": "constable asks how she's sure it's not human, she says a person would make a sound",
-    "lastPlayedAt": 1788252124992
+    "lastPlayedAt": 1788256900724,
+    "playCount": 1
   },
   {
     "id": "807e042dce0d",
@@ -4759,7 +4798,8 @@
     "likes": 0,
     "createdAt": 1787231456079,
     "promptEn": "constable burns the beauty portrait with the lamp, the door opens on its own",
-    "lastPlayedAt": 1788251682774
+    "lastPlayedAt": 1788256546550,
+    "playCount": 1
   },
   {
     "id": "66158f543a20",
@@ -4789,7 +4829,8 @@
     "likes": 0,
     "createdAt": 1787225897650,
     "promptEn": "constable burns the beauty portrait with the lamp, the door opens on its own",
-    "lastPlayedAt": 1788254544113
+    "lastPlayedAt": 1788256970757,
+    "playCount": 1
   },
   {
     "id": "ed3663dcda7f",
@@ -4820,7 +4861,8 @@
     "likes": 0,
     "createdAt": 1787224519456,
     "promptEn": "constable burns the beauty portrait with the lamp, the door opens on its own",
-    "lastPlayedAt": 1788252627218
+    "lastPlayedAt": 1788256710623,
+    "playCount": 1
   },
   {
     "id": "a1cc621cc6b2",
diff --git a/server.js b/server.js
index 9e05a6b..f5f71ca 100644
--- a/server.js
+++ b/server.js
@@ -131,22 +131,22 @@ function glmChat(messages) {
 
 // Distilled from docs/h3skill.md (MiniMax's own H3 prompt-writing methodology) down to the one
 // path that applies here: T2VA (no reference images — every chat prompt is plain text) on a clip
-// fixed at ~5s (H3_GEN_PARAMS.frames / FPS). At that length it's one continuous shot, never a
-// multi-cut montage — the earlier version asked for "shot-by-shot" and reliably got 4-5 fake cuts
-// with timestamps running out to 8-10s, which the model can't actually deliver in 5 seconds.
+// fixed at ~10s (H3_GEN_PARAMS.frames / FPS). At that length it's one continuous shot, never a
+// multi-cut montage — an earlier version asked for "shot-by-shot" and reliably got 4-5 fake cuts
+// with timestamps running past the clip's own length, which the model can't actually deliver.
 const PROMPT_OPTIMIZE_SYSTEM = `You are writing H3 text-to-video generation prompts (T2VA mode — no
 reference images, pure text-to-video). Expand the user's short request (may be in Chinese or English)
 into the official H3 three-field format, in this exact order, using these exact field labels:
 
 integrated_multimodal_description: [Shot 1] one short style statement, e.g. "Live-action, cinematic."
-Then describe, in one continuous unbroken shot (the clip is only about 5 seconds long — never split
+Then describe, in one continuous unbroken shot (the clip is only about 10 seconds long — never split
 into multiple shots or write more than [Shot 1]): the setting, the subject's specific action, and ONE
 dominant camera movement using this vocabulary — Zoom In/Out, Push In/Pull Out, Pan Left/Right, Truck
 Left/Right, Tilt Up/Down, Pedestal Up/Down, Arc Shot, Tracking Shot, Static Shot, Shake Slightly/
 Strongly, POV, Roll Clockwise/Counterclockwise — stated as type + amplitude (small/large) + speed
 (slow/fast). Describe light concretely: where it comes from, what it hits, what effect it creates.
 Never use hollow quality words alone (8K, HD, masterpiece, stunning, cinematic used alone, beautiful,
-high quality) — replace them with what is actually visible. 40-70 English words.
+high quality) — replace them with what is actually visible. 60-100 English words.
 
 overall_soundscape: 1-4 English sentences describing the ambient environmental sound the scene would
 naturally have.
@@ -180,7 +180,7 @@ async function optimizePrompt(userPrompt) {
 // own past-entry trimming naturally handles a state file that's gone stale
 // (server was down long enough that every persisted entry is in the past).
 const FILLER_DURATION_MS = 30000; // keep the schedule filled at least this far ahead
-const H3_GEN_PARAMS = { width: 480, height: 832, frames: 120, steps: 20, turbo: false, seed: 0 };
+const H3_GEN_PARAMS = { width: 480, height: 832, frames: 240, steps: 20, turbo: false, seed: 0 };
 const FPS = 24;
 
 const initialLiveState = loadLiveState();