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-rw-r--r--youtube_dl/postprocessor/ffmpeg.py25
1 files changed, 25 insertions, 0 deletions
diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 7a952963e..1765f4969 100644
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -20,6 +20,7 @@ from ..utils import (
prepend_extension,
shell_quote,
subtitles_filename,
+ dfxp2srt,
)
@@ -651,6 +652,30 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
'format' % new_ext)
continue
new_file = subtitles_filename(filename, lang, new_ext)
+
+ if ext == 'dfxp' or ext == 'ttml':
+ self._downloader.report_warning(
+ 'You have requested to convert dfxp (TTML) subtitles into another format, '
+ 'which results in style information loss')
+
+ dfxp_file = subtitles_filename(filename, lang, ext)
+ srt_file = subtitles_filename(filename, lang, 'srt')
+
+ with io.open(dfxp_file, 'rt', encoding='utf-8') as f:
+ srt_data = dfxp2srt(f.read())
+
+ with io.open(srt_file, 'wt', encoding='utf-8') as f:
+ f.write(srt_data)
+
+ ext = 'srt'
+ subs[lang] = {
+ 'ext': 'srt',
+ 'data': srt_data
+ }
+
+ if new_ext == 'srt':
+ continue
+
self.run_ffmpeg(
subtitles_filename(filename, lang, ext),
new_file, ['-f', new_format])