Update 2025-05-21_08:58:06

concat_opus.py

@@ -0,0 +1,37 @@
+# concat_opus.py — Concatenate all opus files in a user directory in random order into a single stream.opus
+import os
+import random
+import subprocess
+from pathlib import Path
+
+def concat_opus_files(user_dir: Path, output_file: Path):
+    """
+    Concatenate all .opus files in user_dir (except stream.opus) in random order into output_file.
+    Overwrites output_file if exists. Creates it if missing.
+    """
+    files = [f for f in user_dir.glob('*.opus') if f.name != 'stream.opus']
+    if not files:
+        raise FileNotFoundError(f"No opus files to concatenate in {user_dir}")
+    random.shuffle(files)
+    
+    # Create a filelist for ffmpeg concat
+    filelist_path = user_dir / 'filelist.txt'
+    with open(filelist_path, 'w') as f:
+        for opusfile in files:
+            f.write(f"file '{opusfile.resolve()}'\n")
+    
+    # ffmpeg concat demuxer (no re-encoding)
+    cmd = [
+        'ffmpeg', '-y', '-f', 'concat', '-safe', '0', '-i', str(filelist_path),
+        '-c', 'copy', str(output_file)
+    ]
+    try:
+        subprocess.run(cmd, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    except subprocess.CalledProcessError as e:
+        raise RuntimeError(f"FFmpeg concat failed: {e}")
+    finally:
+        if filelist_path.exists():
+            filelist_path.unlink()
+    if not output_file.exists():
+        raise RuntimeError("Concatenation did not produce output.")
+    return output_file