Improve speed

backend/app/algo_host/batch_service.py

@@ -20,9 +20,9 @@ from app.algo_host.result_adapter import (
 )
 from app.algo_host.subprocess_runner import run_batch_main, run_visualization_script
 from app.algo_host.transcode import (
-    ensure_batch_pipeline_input_video,
     is_browser_compatible_mp4,
     is_readable_mp4,
+    stage_batch_pipeline_input,
     transcode_visualization_for_browser,
 )
 from app.domain.consumption import SurgeryConsumptionStored
@@ -189,19 +189,23 @@ class BatchAlgorithmService:
         candidates = resolve_reference_candidates(candidate_consumables)
         candidate_key = candidate_cache_key(candidates)
 
-        surgery_input_dir = self._root_dir / surgery_id / "input"
-        surgery_input_dir.mkdir(parents=True, exist_ok=True)
-        surgery_input = surgery_input_dir / f"{digest[:12]}.mp4"
-        ensure_batch_pipeline_input_video(
+        pipeline_video = (
+            self._root_dir
+            / "cache"
+            / digest
+            / "input"
+            / f"pipeline{uploaded_video_path.suffix or '.mp4'}"
+        )
+        stage_batch_pipeline_input(
             source_path=uploaded_video_path,
-            dest_path=surgery_input,
+            dest_path=pipeline_video,
         )
 
         cache_dir = self._root_dir / "cache" / digest / candidate_key
         job = prepare_batch_job(
             bundle_dir=self._bundle_dir_override,
             cache_dir=cache_dir,
-            uploaded_video_path=uploaded_video_path,
+            pipeline_video_path=pipeline_video,
             candidate_consumables=candidates,
         )
 
@@ -240,7 +244,7 @@ class BatchAlgorithmService:
         return BatchRunResult(
             video_sha256=digest,
             candidate_cache_key=candidate_key,
-            input_path=surgery_input,
+            input_path=pipeline_video,
             work_dir=job.work_dir,
             output_path=job.output_path,
             details=details,