Use the parent clip last frame and new-segment join for extensions, not the stitched file's first frame. Show this account's library storage in Settings.

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

server/api/extend.post.ts

@@ -172,8 +172,11 @@ async function runExtend(
   }
 ) {
   copyFileSync(params.sourcePath, params.part1Path)
-  await extractLastFrame(params.part1Path, params.framePath)
+  await extractLastFrame(params.sourcePath, params.framePath)
   const frame = readFileSync(params.framePath)
+  if (!frame.length || frame.length < 64) {
+    throw new Error('Could not extract the last frame of the clip being extended')
+  }
   if (job.library) job.library.thumb = undefined
   const sound = await probeHasAudio(params.part1Path)