Python script to dump_dvd_chapters.py.

dump_dvd_chapters.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from pprint import pprint
+import subprocess
+import sys
+
+def mplayer_ident(filepath):
+    command = [
+        "mplayer",
+        "-identify",
+        "-frames", "0",
+        filepath
+    ]
+    pipe = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, err = pipe.communicate()
+    total_len = None
+    chap = None
+    #print(out.decode("utf-8"))
+    for line in out.decode("utf-8").split("\n"):
+        if "CHAPTERS:" in line:
+            # TODO: Might appear multiple times
+            chap = line[10:].strip(",").split(",")
+        if "ID_DVD_TITLE_1_LENGTH" in line:
+            (s, ms) = line[22:].strip().split(".")
+            total_len = int(s) * 1000 + int(ms)
+    return (total_len, chap)
+
+def get_ms_from_hms(stamp):
+    (h, m, s) = stamp.split(":")
+    (s, ms) = s.split(".")
+    result  = int(h) * 60 * 60 * 1000
+    result += int(m) * 60 * 1000
+    result += int(s) * 1000
+    result += int(ms)
+    return result
+
+def print_ffmpeg_chaps(chapters, total_len):
+    # https://ffmpeg.org/ffmpeg-formats.html#Metadata-1
+    print(";FFMETADATA1")
+    for i, c in enumerate(chapters):
+        idx = i+1
+        millis = get_ms_from_hms(c)
+        next_c = total_len
+        if i+1 < len(chapters):
+            next_c = get_ms_from_hms(chapters[i+1])
+        print("\n[CHAPTER]")
+        print("TIMEBASE=1/1000")
+        print("# START AT {}".format(c))
+        print("START={:d}".format(millis))
+        print("END={:d}".format(next_c))
+        print("title=Chapter {:d}".format(idx))
+
+def print_ogm_chaps(chapters):
+    for i, c in enumerate(chapters):
+        idx = i+1
+        print("CHAPTER{:02d}={}".format(idx, c))
+        print("CHAPTER{:02d}NAME=Chapter {:d}".format(idx, idx))
+
+FILENAME = sys.argv[1]
+
+(total_len, chaps) = mplayer_ident(FILENAME)
+
+#pprint(chaps)
+
+print_ffmpeg_chaps(chaps, total_len)
+#print_ogm_chaps(chaps)