Move scripts dir inside hm

And remove weird path contraptions

hm/scripts/mediaDuration

@@ -0,0 +1,60 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i python3 --pure
+#! nix-shell -p python3 python3Packages.coloredlogs ffmpeg
+
+import logging
+import os
+import subprocess
+import sys
+
+import coloredlogs
+
+coloredlogs.install(level="DEBUG", fmt="%(levelname)s %(message)s")
+log = logging.getLogger()
+
+
+def duration_file(path: str) -> float:
+    cmd = [
+        "ffprobe",
+        "-v",
+        "error",
+        "-show_entries",
+        "format=duration",
+        "-of",
+        "default=noprint_wrappers=1:nokey=1",
+        path,
+    ]
+    run = subprocess.run(cmd, stdout=subprocess.PIPE)
+    ret = run.stdout.decode().strip()
+    if run.returncode != 0:
+        log.warning(f"{path}: unable to get duration")
+    elif ret == "N/A":
+        log.warning(f"{path}: has no duration")
+    else:
+        try:
+            return float(ret)
+        except ValueError:
+            log.error(f"{path}: returned {ret}")
+    return 0
+
+
+def duration_directory(path: str) -> float:
+    total = 0.0
+    for root, dirs, files in os.walk(path):
+        for f in files:
+            fullPath = os.path.join(root, f)
+            total += duration_file(fullPath)
+    return total
+
+
+total = 0.0
+for arg in sys.argv[1:]:
+    if os.path.isfile(arg):
+        total += duration_file(arg)
+    elif os.path.isdir(arg):
+        total += duration_directory(arg)
+    else:
+        raise FileNotFoundError(f"No such file or directory: '{arg}'")
+
+
+print(total)