feat: pass WAV paths as CLI args to verify_sync

verify_sync.py

@@ -652,6 +652,8 @@ def main():
     ap.add_argument("--config", default="config.toml")
     ap.add_argument("--a", default=None, help="Video file A")
     ap.add_argument("--b", default=None, help="Video file B")
+    ap.add_argument("--wav-a", default=None, help="WAV file for audio A")
+    ap.add_argument("--wav-b", default=None, help="WAV file for audio B")
     ap.add_argument("--synced", default=None, help="Synced MKV output (full mode)")
     ap.add_argument("--lag", type=float, default=0.0, help="Lag in seconds")
     ap.add_argument("--mode", choices=["short", "full"], default="short",
@@ -679,10 +681,12 @@ def main():
         except Exception:
             pass
 
+    ext = cfg.get("extract", {})
+
     if args.mode == "full":
         synced = args.synced
         if not synced:
-            video_a = ext.get("file_a", "")
+            video_a = args.a or ext.get("file_a", "")
             stem = os.path.splitext(os.path.basename(video_a))[0]
             synced = os.path.join(out_dir, f"{stem}_synced.mkv")
         if not os.path.exists(synced):
@@ -701,8 +705,7 @@ def main():
 
         # Determine which streams to extract from synced MKV
         # A's streams are first, B's delayed streams follow
-        ext = cfg.get("extract", {})
-        video_a = ext.get("file_a", "")
+        video_a = args.a or ext.get("file_a", "")
         a_streams_in = probe_audio_streams(video_a) if os.path.exists(video_a) else []
         n_a = len(a_streams_in)
         sel_a = _state.get("audio_stream_a", 0) or 0
@@ -745,18 +748,19 @@ def main():
     else:
         video_a = args.a or ext.get("file_a", "")
         video_b = args.b or ext.get("file_b", "")
-
         out_dir_extract = ext.get("out_dir", "extracted")
 
-        def find_wav(video_path: str) -> str:
-            if not video_path:
-                return ""
-            stem = os.path.splitext(os.path.basename(video_path))[0]
-            cand = os.path.join(out_dir_extract, f"{stem}_audio.wav")
-            return cand if os.path.exists(cand) else cand
+        if args.wav_a:
+            wav_a = args.wav_a
+        else:
+            stem_a = os.path.splitext(os.path.basename(video_a))[0]
+            wav_a = os.path.join(out_dir_extract, f"{stem_a}_audio.wav")
 
-        wav_a = find_wav(video_a)
-        wav_b = find_wav(video_b)
+        if args.wav_b:
+            wav_b = args.wav_b
+        else:
+            stem_b = os.path.splitext(os.path.basename(video_b))[0]
+            wav_b = os.path.join(out_dir_extract, f"{stem_b}_audio.wav")
 
         if not video_a or not os.path.exists(video_a):
             print(f"ERROR: video A not found: {video_a}", file=sys.stderr); sys.exit(1)