fix a bug with audio on video speaker separation

gradio_app.py

@@ -121,13 +121,12 @@ def separate_speakers_video(video_path):
     output_dir = os.path.join("output_sep_video", session_id)
     os.makedirs(output_dir, exist_ok=True)
 
-    output_videos = []
+    output_files = []
     for i in range(ests_speech.shape[0]):
         path = os.path.join(output_dir, f"speaker_{i+1}.wav")
-        sf.write(path, ests_speech[i].cpu().numpy(), TARGET_SR)
-        video_path = os.path.join(output_dir, f"speaker_{i+1}_video.mp4")
-        attach_audio_to_video(video, path, video_path)
-        output_videos.append(video_path)
+        audio_np = ests_speech[i].cpu().numpy().astype("float32")
+        sf.write(path, audio_np, TARGET_SR, format='WAV')
+        output_files.append(path)
 
     updates = []
     for i in range(MAX_SPEAKERS):