Tagging works

chapters.txt

@@ -1,4 +0,0 @@
-0:00:00.000 Intro
-0:01:00.000 First Minute
-0:02:10.000 Two Minutes and ten seconds
-0:02:20.420 Two Minutes and twenty seconds, and then some

example.yaml

@@ -0,0 +1,13 @@
+title: "A Test"
+artist: "Tony the tester"
+date: "2017-01-14"
+comment: "This is comment"
+language: "de"
+
+cover: "cover.jpg"
+
+chapters:
+    "0:00:00.000" : "Intro"
+    "0:01:00.000" : "First Minute"
+    "0:02:10.000" : "Two Minutes and ten seconds"
+    "0:02:20.420" : "Two Minutes and twenty seconds, and then some"

multitag.py

@@ -4,9 +4,14 @@ import sys
 import os
 import subprocess
 
+import yaml
+
 import mutagen
 from mutagen.id3 import ID3, CTOC, CHAP, TIT2, CTOCFlags
+from mutagen.easyid3 import EasyID3
+from mutagen.easymp4 import EasyMP4
 
+YAML_KEYS = ["title", "artist", "date", "comment", "cover", "language", "chapters"]
 
 def time_to_milliseconds(time_str):
     time_parts = list(map(lambda t: float(t), time_str.split(':')))
@@ -18,23 +23,36 @@ def time_to_milliseconds(time_str):
 
     return time
 
-
-def read_chapter_file(chapter_file):
-    chapters = []
-
+def read_tag_file(chapter_file):
     if not os.path.isfile(chapter_file):
         raise RuntimeError("Chapter file %s does not exist" % chapter_file)
 
-    for line in open(chapter_file, "r"):
-        line = line.strip()
-        if line != "":
-            time, name = line.split(maxsplit=1)
-            chapters += [(time, name)]
+    tags = yaml.load(open(chapter_file, 'r'))
 
-    return chapters
+    for key in YAML_KEYS:
+        if not key in tags:
+            raise RuntimeError("Expected key %s not found in yaml" % key)
 
 
-def make_mp3_chapters(chapters, audio):
+    tags['chapters'] = sorted(tags['chapters'].items(), key=lambda x: x[0])
+
+    return tags
+
+
+def make_mp3_tags(tags, path):
+    id3 = EasyID3(path)
+
+    id3['title'] = tags['title']
+    id3['artist'] = tags['artist']
+    id3['date'] = tags['date']
+    id3['language'] = tags['language']
+
+    id3.save()
+
+
+def make_mp3_chapters(chapters, path):
+    audio = mutagen.File(path)
+
     file_length = int(audio.info.length * 1000)
 
     element_ids = [(u"ch%d" % i) for i in range(0, len(chapters))]
@@ -60,6 +78,16 @@ def make_mp3_chapters(chapters, audio):
                         ]))
 
 
+
+def make_mp4_tags(tags, path):
+    mp4 = EasyMP4(path)
+
+    mp4['title'] = tags['title']
+    mp4['artist'] = tags['artist']
+    mp4['date'] = tags['date']
+
+    mp4.save()
+
 def make_mp4_chapters(chapters, path):
     chap_path = "%s.chapters.txt" % os.path.splitext(path)[0]
     chapter_file = open(chap_path, 'w')
@@ -72,39 +100,50 @@ def make_mp4_chapters(chapters, path):
 
     os.remove(chap_path)
 
+def make_ogg_tags(tags, audio):
+    audio.tags['TITLE'] = tags['title']
+    audio.tags['ARTIST'] = tags['artist']
+    audio.tags['DATE'] = tags['date']
+    audio.tags['LANGUAGE'] = tags['language']
+    audio.tags['COMMENT'] = tags['comment']
+
+    audio.save()
 
 def make_ogg_chapters(chapters, audio):
+
     for i in range(0, len(chapters)):
         num = str(i).zfill(3)
         audio.tags['CHAPTER%s' % num] = chapters[i][0]
         audio.tags['CHAPTER%sNAME' % num] = chapters[i][1]
 
+    audio.save()
 
 
 def main():
 
     if len(sys.argv) < 3:
-        print("Usage: %s chapterfile mediafile1 mediafile2 mediafile3 ..." % sys.argv[0])
+        print("Usage: %s tagfile mediafile1 mediafile2 mediafile3 ..." % sys.argv[0])
         sys.exit(0)
 
-    chapter_file_path = sys.argv[1]
-    media_files = sys.argv[1:]
+    tag_file_path = sys.argv[1]
+    media_files = sys.argv[2:]
 
-
-    chapters = read_chapter_file(chapter_file_path)
+    tags = read_tag_file(tag_file_path)
 
     for path in media_files:
         print("Adding chapters to: %s" % path)
+
         audio = mutagen.File(path)
 
         if isinstance(audio, mutagen.mp3.MP3):
-            make_mp3_chapters(chapters, audio)
-            audio.save()
+            make_mp3_tags(tags, path)
+            make_mp3_chapters(tags['chapters'], path)
         elif isinstance(audio, mutagen.mp4.MP4):
-            make_mp4_chapters(chapters, path)
+            make_mp4_tags(tags, path)
+            make_mp4_chapters(tags['chapters'], path)
         elif isinstance(audio, mutagen.oggvorbis.OggVorbis) or isinstance(audio, mutagen.oggopus.OggOpus):
-            make_ogg_chapters(chapters, audio)
-            audio.save()
+            make_ogg_tags(tags, audio)
+            make_ogg_chapters(tags['chapters'], audio)
         else:
             print("Skipping unsupported file: %s" % path)