Keep pause across Coolify restarts, apply the chosen still from the image picker, and remux clips with Range/faststart so finished video can be scrubbed.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/utils/videoChain.ts

@@ -9,7 +9,7 @@ import { isLtxWorkflow, isTextToVideo, parseVideoWorkflow, workflowForExtension,
 import { clipVideoPath, clipTitle, deleteRetryDraft, extendTempDir, getClip, nextClipPartName, removeExtendTemp, stillPath } from '~/server/utils/library'
 import { extractLastFrame, probeHasAudio } from '~/server/utils/ffmpeg'
 import { ensureComfyReady } from '~/server/utils/comfyLifecycle'
-import { onLiveVideoSettled, onStudioQueueBurstStarted } from '~/server/utils/studioQueue'
+import { onLiveVideoSettled, onStudioQueueBurstStarted, isStudioQueuePaused } from '~/server/utils/studioQueue'
 import {
   finishQueueBurst,
   getShotQueue,
@@ -238,6 +238,17 @@ function seedCurrentVideo(job: Job) {
   return { tmpDir, currentPath, part1Path: join(tmpDir, 'part1.mp4'), framePath: join(tmpDir, 'last_frame.png') }
 }
 
+function chainShouldHold(job: Job) {
+  if (!job.library) return false
+  if (job.library.stopAfterCurrent) return true
+  if (isStudioQueuePaused(job.library.ownerKey)) return true
+  const queue = job.library.queueId
+    ? getShotQueue(job.library.ownerKey, job.library.queueId)
+    : null
+  if (queue?.stopAfterCurrent || queue?.status === 'paused') return true
+  return false
+}
+
 export async function continueQueuedExtensions(
   job: Job,
   params: VideoChainParams,
@@ -269,14 +280,22 @@ export async function continueQueuedExtensions(
     for (let i = startFrom; i < extensions.length; i++) {
       if (shotsLeft <= 0) break
       assertJobActive(job)
-      if (job.library.stopAfterCurrent) break
+      if (chainShouldHold(job)) {
+        job.library.stopAfterCurrent = true
+        break
+      }
 
       const liveQueue = job.library.queueId
         ? getShotQueue(job.library.ownerKey, job.library.queueId)
         : null
-      if (liveQueue?.stopAfterCurrent) job.library.stopAfterCurrent = true
-      if (liveQueue?.autoRun === false) job.library.queueAutoRun = false
-      if (job.library.stopAfterCurrent) break
+      if (liveQueue?.stopAfterCurrent || liveQueue?.autoRun === false) {
+        if (liveQueue.stopAfterCurrent) job.library.stopAfterCurrent = true
+        if (liveQueue.autoRun === false) job.library.queueAutoRun = false
+      }
+      if (chainShouldHold(job)) {
+        job.library.stopAfterCurrent = true
+        break
+      }
       const live = liveQueue ? liveSegmentPrompt(liveQueue, i) : extensions[i]
       const ext = {
         prompt: live.prompt || extensions[i].prompt,
@@ -289,10 +308,7 @@ export async function continueQueuedExtensions(
       emitChainJob(job, { type: 'status', message: 'Waiting 3s buffer...', progress: 1 })
       await sleep(3000)
       assertJobActive(job)
-      const pausedQueue = job.library.queueId
-        ? getShotQueue(job.library.ownerKey, job.library.queueId)
-        : null
-      if (job.library.stopAfterCurrent || pausedQueue?.stopAfterCurrent) {
+      if (chainShouldHold(job)) {
         job.library.stopAfterCurrent = true
         break
       }
@@ -376,7 +392,10 @@ export async function continueQueuedExtensions(
         job.library.extendPart1Path = undefined
       }
 
-      if (shotsLeft <= 0 || job.library.stopAfterCurrent) break
+      if (shotsLeft <= 0 || chainShouldHold(job)) {
+        if (chainShouldHold(job)) job.library.stopAfterCurrent = true
+        break
+      }
     }
   } finally {
     if (job.library) job.library.chainContinuing = false
@@ -398,7 +417,10 @@ export async function continueQueuedExtensions(
 export async function continueQueuedExtensionsIfNeeded(job: Job) {
   if (!job.library) return
   if (job.status === 'error' || job.status === 'cancelled' || job.status === 'complete') return
-  if (job.library.stopAfterCurrent) return
+  if (chainShouldHold(job)) {
+    job.library.stopAfterCurrent = true
+    return
+  }
   const remaining = remainingAfterCurrentShot(job.library)
   if (!remaining.length) return
   const queue = job.library.queueId
@@ -440,10 +462,7 @@ export async function runGeneration(job: Job, params: VideoChainParams) {
       persist: extensions.length === 0 || !autoRun
     })
 
-    const stopNow = job.library?.stopAfterCurrent === true
-      || (job.library?.queueId
-        ? getShotQueue(job.library.ownerKey, job.library.queueId)?.stopAfterCurrent === true
-        : false)
+    const stopNow = chainShouldHold(job)
     const keepGoing = Boolean(autoRun && !stopNow && extensions.length && job.library)
     if (job.library?.queueId && !keepGoing) {
       await finishQueueBurst(job.library.ownerKey, job.library.queueId, true).catch(() => null)