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>

pages/index.vue

@@ -874,7 +874,10 @@
               :autoplay="autoplayEnabled && !awaitingReveal"
               loop
               playsinline
+              preload="metadata"
               @play="onPlayed"
+              @loadedmetadata="onVideoMeta"
+              @durationchange="onVideoMeta"
             />
             <button
               v-if="awaitingReveal && !lockedSave"
@@ -899,6 +902,12 @@
             Generated MP4 appears here
           </div>
           </div>
+          <p v-if="videoUrl && !lockedSave && !videoSeekable" class="mt-3 text-xs text-amber-200/80">
+            Encoding… this file cannot be scrubbed until Comfy finishes writing it.
+          </p>
+          <p v-else-if="playingLastSavedWhileBusy" class="mt-3 text-xs text-zinc-500">
+            Playing the last saved part. The shot still encoding cannot be scrubbed until it saves.
+          </p>
           <div v-if="videoUrl && !lockedSave" class="mt-4 flex flex-wrap gap-3">
             <a
               v-if="!awaitingReveal"
@@ -1648,6 +1657,7 @@ const activeChainPlan = ref<{ label: string; prompt: string; duration: number }[
 const expandedFamilies = ref<Record<string, boolean>>({})
 const elapsedMs = ref(0)
 const videoUrl = ref('')
+const videoSeekable = ref(true)
 const editResultUrl = ref('')
 const editProgress = ref(0)
 const editStatusMessage = ref('Waiting for a still.')
@@ -1800,6 +1810,9 @@ const outputPreviewKind = computed<'video' | 'edit'>(() => {
 const liveElapsedLabel = computed(() => (
   outputProgressKind.value === 'edit' ? editElapsedLabel.value : elapsedLabel.value
 ))
+const playingLastSavedWhileBusy = computed(() => (
+  videoBusy.value && Boolean(videoUrl.value) && !watchingLibrary.value && !lockedSave.value
+))
 const liveStatusMessage = computed(() => (
   outputProgressKind.value === 'edit' ? editStatusMessage.value : statusMessage.value
 ))
@@ -2481,6 +2494,10 @@ watch(withSound, (value) => {
   } catch { /* ignore */ }
 })
 
+watch(videoUrl, () => {
+  videoSeekable.value = true
+})
+
 watch(autoplayEnabled, (value) => {
   try {
     localStorage.setItem('aigen-autoplay', String(value))
@@ -2809,6 +2826,7 @@ function updateClipRefLabel(clip: LibraryClip, index: number, label: string) {
 
 function onPickedPermanence(still: { id: string }) {
   const slot = pickerSlot.value
+  if (slot === 'main' || slot === 'editRef' || typeof slot === 'number') return
   pickerOpen.value = false
   if (typeof slot === 'string' && slot.startsWith('clip:')) {
     const clipId = slot.slice(5)
@@ -3883,6 +3901,16 @@ function onPlayed() {
   awaitingReveal.value = false
 }
 
+function onVideoMeta() {
+  const el = player.value
+  if (!el) {
+    videoSeekable.value = true
+    return
+  }
+  const duration = el.duration
+  videoSeekable.value = Number.isFinite(duration) && duration > 0
+}
+
 function revealAndPlay() {
   awaitingReveal.value = false
   nextTick(() => {