Fix UnboundLocalError by moving extract_cmd definition before printing it

app/upscaler.py

@@ -326,7 +326,6 @@ def run_upscale_pipeline(job: UpscaleJob, on_progress_update: Callable[[str, Dic
         if not skip_extraction:
             job.update_status("extracting", progress=10)
             on_progress_update(job.job_id, {"status": "extracting", "progress": 10})
-            print(f"[{time.strftime('%Y-%m-%d %H:%M:%S')}] [Job {job.job_id}] extracting frames. Command: {' '.join(extract_cmd)}")
             
             # High quality JPG frames to balance disk usage and speed
             extract_cmd = ["ffmpeg", "-y"]
@@ -345,6 +344,7 @@ def run_upscale_pipeline(job: UpscaleJob, on_progress_update: Callable[[str, Dic
                 os.path.join(input_frames_dir, "frame_%08d.jpg")
             ])
             
+            print(f"[{time.strftime('%Y-%m-%d %H:%M:%S')}] [Job {job.job_id}] extracting frames. Command: {' '.join(extract_cmd)}")
             p_extract = job.run_command(extract_cmd)
             stdout, stderr = p_extract.communicate()
             job.cleanup_process(p_extract)