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[ffmpeg] add support for chapters field postprocessing

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remitamine 2016-05-05 21:41:30 +01:00 • committed by Remita Amine
parent 55949fede6
commit fa2a36d9bc
1 changed files with 28 additions and 3 deletions
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31
youtube_dl/postprocessor/ffmpeg.py
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@ -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,
)
@ -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 = encodeFilename(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