Update app.py

app.py

@@ -0,0 +1,29 @@
+import gradio as gr
+import os, json, tempfile, shutil, subprocess
+from pathlib import Path
+
+def run(cmd):
+    r = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+    if r.returncode != 0:
+        raise RuntimeError(r.stderr)
+    return r.stdout
+
+def ffprobe_duration(path):
+    info = run(["ffprobe","-v","error","-print_format","json","-show_format","-show_streams", path])
+    meta = json.loads(info)
+    if "format" in meta and "duration" in meta["format"]:
+        return float(meta["format"]["duration"])
+    dur = 0.0
+    for s in meta.get("streams", []):
+        if "duration" in s:
+            dur = max(dur, float(s["duration"]))
+    if dur <= 0:
+        raise ValueError("Could not determine duration")
+    return dur
+
+def has_audio(path):
+    info = run(["ffprobe","-v","error","-print_format","json","-show_streams", path])
+    meta = json.loads(info)
+    return any(s.get("codec_type")=="audio" for s in meta.get("streams", []))
+
+def split_and