seek via underlying media element for resume

src/pages/PlayerPage.tsx

@@ -348,6 +348,19 @@ export default function PlayerPage() {
     }
     return ''
   })()
+  if (typeof window !== 'undefined' && playbackInfo) {
+    const transcodingUrl = resolvedSource?.TranscodingUrl
+    const supportsDirectPlay = resolvedSource?.SupportsDirectPlay
+    const hasRuntimeTicks = transcodingUrl ? transcodingUrl.includes('runtimeTicks=') : null
+    console.log('[player] stream resolved', {
+      id,
+      startTimeTicks,
+      supportsDirectPlay,
+      transcodingUrlPresent: !!transcodingUrl,
+      transcodingUrlHasRuntimeTicks: hasRuntimeTicks,
+      streamUrl: streamUrl.replace(/api_key=[^&]+/, 'api_key=***'),
+    })
+  }
 
   /* Reset transient flags on item change */
   useEffect(() => {
@@ -1164,8 +1177,13 @@ export default function PlayerPage() {
           if (p && pendingSeekRef.current != null) {
             const target = pendingSeekRef.current
             pendingSeekRef.current = null
-            if (p.currentTime < target - 0.5 || p.currentTime > target + 0.5) {
-              try { p.currentTime = target } catch { /* ignore */ }
+            const mediaEl = (p as any).media as HTMLMediaElement | undefined
+            const before = mediaEl ? mediaEl.currentTime : p.currentTime
+            if (before < target - 0.5 || before > target + 0.5) {
+              try {
+                if (mediaEl) mediaEl.currentTime = target
+                else p.currentTime = target
+              } catch { /* ignore */ }
             }
             p.play().catch(() => {})
           }
@@ -1403,13 +1421,29 @@ export default function PlayerPage() {
             setResumePromptOpen(false)
             const p = playerRef.current
             const pos = Number(item?.UserData?.PlaybackPositionTicks ?? 0)
+            const target = pos > 0 ? pos / 10_000_000 : 0
+            if (typeof window !== 'undefined') {
+              console.log('[player] resume prompt clicked', {
+                id,
+                pos,
+                target,
+                mediaElementCurrentTime: (p as any)?.media?.currentTime,
+                streamUrlStart: streamUrl.includes('StartTimeTicks=') || streamUrl.includes('runtimeTicks='),
+              })
+            }
             if (p) {
-              // Queue the seek: if the video isn't ready yet, onCanPlay
-              // picks it up. The setter works on a paused player in
-              // vidstack, but buffering the seek target can race the
-              // canPlay event for the initial source.
-              pendingSeekRef.current = pos > 0 ? pos / 10_000_000 : 0
-              try { p.currentTime = pendingSeekRef.current } catch { /* ignore */ }
+              // Vidstack has a known issue (GH #941) where setting
+              // currentTime on the MediaPlayerInstance for a direct-play
+              // MP4 source restarts the video from the beginning. The
+              // workaround is to set currentTime on the underlying
+              // HTMLMediaElement. For HLS it works either way; we use
+              // the underlying element for consistency.
+              pendingSeekRef.current = target
+              const mediaEl = (p as any).media as HTMLMediaElement | undefined
+              try {
+                if (mediaEl) mediaEl.currentTime = target
+                else p.currentTime = target
+              } catch { /* ignore */ }
               p.play().catch(() => {})
             }
           },
@@ -1418,7 +1452,11 @@ export default function PlayerPage() {
             const p = playerRef.current
             if (p) {
               pendingSeekRef.current = 0
-              try { p.currentTime = 0 } catch { /* ignore */ }
+              const mediaEl = (p as any).media as HTMLMediaElement | undefined
+              try {
+                if (mediaEl) mediaEl.currentTime = 0
+                else p.currentTime = 0
+              } catch { /* ignore */ }
               p.play().catch(() => {})
             }
           },