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[ffmpeg] add support for chapters field postprocessing

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This commit is contained in:
remitamine 2016-05-05 21:41:30 +01:00
parent c90996937f
commit 726aefb27a
1 changed files with 25 additions and 4 deletions
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29
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,
)
@ -420,17 +422,36 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
filename = info['filepath']
temp_filename = prepend_extension(filename, 'temp')
metadata_filename = replace_extension(filename, 'meta')
options = ['-map_metadata', '1']
if info['ext'] == 'm4a':
options = ['-vn', '-acodec', 'copy']
options.extend(['-vn', '-acodec', 'copy'])
else:
options = ['-c', 'copy']
options.extend(['-c', 'copy'])
def ffmpeg_escape(text):
return re.sub(r'(=|;|#|\\|\n)', r'\\\1', text)
metadata_file_content = ';FFMETADATA1\n'
for (name, value) in metadata.items():
options.extend(['-metadata', '%s=%s' % (name, value)])
metadata_file_content += '%s=%s\n' % (name, ffmpeg_escape(value))
for chapter in info.get('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)
with io.open(metadata_filename, 'wt', encoding='utf-8') as f:
f.write(metadata_file_content)
self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
self.run_ffmpeg(filename, temp_filename, options)
self.run_ffmpeg_multiple_files([filename, metadata_filename], temp_filename, options)
os.remove(encodeFilename(metadata_filename))
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
return [], info