add SeFree-Custom-Script

SeFree-Custom-Script/shift_track.py

@@ -0,0 +1,67 @@
+import subprocess
+import json
+from pathlib import Path
+
+INPUT_DIR = Path("/Entertainment_1/Downloads/USCK/Series/Release.that.Witch.2026.S01.1080p.CR.WEB-DL.AAC2.0.H.264-[SeFree]")
+OUTPUT_DIR = Path.joinpath(INPUT_DIR,"output")
+SHIFT_MS = 28500  # +15 sec (negative = backward)
+
+# choose one mode
+TARGET_TRACK_IDS = None        # example: [1,2]
+TARGET_LANGS = ["tha","eng"]         # example: ["eng", "jpn", "tha"]
+
+# track types to shift
+TRACK_TYPES = ["subtitles"] #  ["audio", "subtitles"]
+
+OUTPUT_DIR.mkdir(exist_ok=True)
+
+
+def get_tracks(file):
+    cmd = ["mkvmerge", "-J", str(file)]
+    result = subprocess.run(cmd, capture_output=True, text=True)
+    return json.loads(result.stdout)["tracks"]
+
+
+def select_tracks(tracks):
+    selected = []
+
+    for t in tracks:
+        if t["type"] not in TRACK_TYPES:
+            continue
+
+        track_id = t["id"]
+        lang = t["properties"].get("language")
+
+        if TARGET_TRACK_IDS:
+            if track_id in TARGET_TRACK_IDS:
+                selected.append(track_id)
+
+        elif TARGET_LANGS:
+            if lang in TARGET_LANGS:
+                selected.append(track_id)
+
+    return selected
+
+
+for mkv_file in INPUT_DIR.glob("*.mkv"):
+    print(f"Processing: {mkv_file.name}")
+
+    tracks = get_tracks(mkv_file)
+    selected_ids = select_tracks(tracks)
+
+    if not selected_ids:
+        print("  No matching tracks")
+        continue
+
+    output_file = OUTPUT_DIR / mkv_file.name
+
+    cmd = ["mkvmerge", "-o", str(output_file)]
+
+    for track_id in selected_ids:
+        cmd.extend(["--sync", f"{track_id}:{SHIFT_MS}"])
+
+    cmd.append(str(mkv_file))
+
+    subprocess.run(cmd)
+
+print("Done")