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FFmpegEmbedSubtitlePP: don't fail if the video doesn't have an audio stream (fixes #4718)
Instead of specifying which streams ffmpeg must copy, we tell it to copy all.
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@ -475,7 +475,13 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
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filename = information['filepath']
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input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
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opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
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opts = [
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'-map', '0',
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'-c', 'copy',
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# Don't copy the existing subtitles, we may be running the
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# postprocessor a second time
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'-map', '-0:s',
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]
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for (i, lang) in enumerate(sub_langs):
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opts.extend(['-map', '%d:0' % (i + 1), '-c:s:%d' % i, 'mov_text'])
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lang_code = self._conver_lang_code(lang)
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