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[youtubedl] / youtube_dl / postprocessor / ffmpeg.py

diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 7c162d92abb43f9cf522eeeb52bb9675a06a24f7..3ea1afcf31cb49e0992a79b46c5985bb33b742a3 100644 (file)
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -4,6 +4,7 @@ import io
 import os
 import subprocess
 import time
+import re
 
 
 from .common import AudioConversionError, PostProcessor
@@ -22,6 +23,7 @@ from ..utils import (
     subtitles_filename,
     dfxp2srt,
     ISO639Utils,
+    replace_extension,
 )
 
 
@@ -42,7 +44,7 @@ ACODECS = {
     'aac': 'aac',
     'flac': 'flac',
     'm4a': 'aac',
-    'opus': 'opus',
+    'opus': 'libopus',
     'vorbis': 'libvorbis',
     'wav': None,
 }
@@ -429,17 +431,40 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
 
         filename = info['filepath']
         temp_filename = prepend_extension(filename, 'temp')
+        in_filenames = [filename]
+        options = []
 
         if info['ext'] == 'm4a':
-            options = ['-vn', '-acodec', 'copy']
+            options.extend(['-vn', '-acodec', 'copy'])
         else:
-            options = ['-c', 'copy']
+            options.extend(['-c', 'copy'])
 
         for (name, value) in metadata.items():
             options.extend(['-metadata', '%s=%s' % (name, value)])
 
+        chapters = info.get('chapters', [])
+        if chapters:
+            metadata_filename = replace_extension(filename, 'meta')
+            with io.open(metadata_filename, 'wt', encoding='utf-8') as f:
+                def ffmpeg_escape(text):
+                    return re.sub(r'(=|;|#|\\|\n)', r'\\\1', text)
+
+                metadata_file_content = ';FFMETADATA1\n'
+                for chapter in chapters:
+                    metadata_file_content += '[CHAPTER]\nTIMEBASE=1/1000\n'
+                    metadata_file_content += 'START=%d\n' % (chapter['start_time'] * 1000)
+                    metadata_file_content += 'END=%d\n' % (chapter['end_time'] * 1000)
+                    chapter_title = chapter.get('title')
+                    if chapter_title:
+                        metadata_file_content += 'title=%s\n' % ffmpeg_escape(chapter_title)
+                f.write(metadata_file_content)
+                in_filenames.append(metadata_filename)
+                options.extend(['-map_metadata', '1'])
+
         self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
-        self.run_ffmpeg(filename, temp_filename, options)
+        self.run_ffmpeg_multiple_files(in_filenames, temp_filename, options)
+        if chapters:
+            os.remove(metadata_filename)
         os.remove(encodeFilename(filename))
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
         return [], info
@@ -517,7 +542,7 @@ class FFmpegFixupM3u8PP(FFmpegPostProcessor):
             temp_filename = prepend_extension(filename, 'temp')
 
             options = ['-c', 'copy', '-f', 'mp4', '-bsf:a', 'aac_adtstoasc']
-            self._downloader.to_screen('[ffmpeg] Fixing malformated aac bitstream in "%s"' % filename)
+            self._downloader.to_screen('[ffmpeg] Fixing malformed AAC bitstream in "%s"' % filename)
             self.run_ffmpeg(filename, temp_filename, options)
 
             os.remove(encodeFilename(filename))
@@ -552,7 +577,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
             sub_filenames.append(old_file)
             new_file = subtitles_filename(filename, lang, new_ext)
 
-            if ext == 'dfxp' or ext == 'ttml' or ext == 'tt':
+            if ext in ('dfxp', 'ttml', 'tt'):
                 self._downloader.report_warning(
                     'You have requested to convert dfxp (TTML) subtitles into another format, '
                     'which results in style information loss')
@@ -560,7 +585,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
                 dfxp_file = old_file
                 srt_file = subtitles_filename(filename, lang, 'srt')
 
-                with io.open(dfxp_file, 'rt', encoding='utf-8') as f:
+                with open(dfxp_file, 'rb') as f:
                     srt_data = dfxp2srt(f.read())
 
                 with io.open(srt_file, 'wt', encoding='utf-8') as f: