From 523c7e1d442f1bbd93a6749ca9e078159e190bce Mon Sep 17 00:00:00 2001 From: sergeidanilov Date: Sun, 12 Nov 2023 23:40:55 -0800 Subject: [PATCH] Fixed comments and added more supported formats --- yt_dlp/postprocessor/ffmpeg.py | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py index 6a7264edd6..e9d6fa760d 100644 --- a/yt_dlp/postprocessor/ffmpeg.py +++ b/yt_dlp/postprocessor/ffmpeg.py @@ -1047,21 +1047,32 @@ class FFmpegSplitChaptersPP(FFmpegPostProcessor): ['-ss', str(chapter['start_time']), '-t', str(chapter['end_time'] - chapter['start_time'])]) + # Extends opts with chapter specific metadata for the supported formats. + # + # Tested and supported on opus, m4a, webm and mp4. + def _set_metadata_arg(self, opts, ext, key, value): + if ext == 'opus': + # opus file requires a stream to keep title, artist etc metadata. + # FFmpegMetadataPP already set metadata and created that stream. + # Futher metadata updates should be set on the stream(:s) + # -metadata will do nothing and needs to be -metadata:s + opts.extend(['-metadata:s', f'{key}={value}']) + elif ext in ['m4a', 'webm', 'mp4']: + opts.extend(['-metadata', f'{key}={value}']) + # FFmpeg adds metadata about all chapters from parent file to all split m4a files. # This is incorrect since there must be only single chapter in each file after split. # Such behavior confuses players who think multiple chapters present - def _set_out_opts(self, ext, chapter_title): + def _set_out_opts(self, ext, chapter_title, track_number): out_opts = [*self.stream_copy_opts()] out_opts.extend(['-map_metadata', '0']) # exclude chapters metadata but keep everything else out_opts.extend(['-map_chapters', '-1']) - if not chapter_title: - return out_opts + # replace global title with chapter specific title in split files - if ext == 'm4a': - out_opts.extend(['-metadata', 'title={}'.format(chapter_title)]) - if ext == 'opus': - out_opts.extend(['-metadata:s', 'title={}'.format(chapter_title)]) + if chapter_title: + self._set_metadata_arg(out_opts, ext, "title", chapter_title) + self._set_metadata_arg(out_opts, ext, "track", track_number) return out_opts @PostProcessor._restrict_to(images=False) @@ -1078,7 +1089,7 @@ class FFmpegSplitChaptersPP(FFmpegPostProcessor): self.to_screen('Splitting video by chapters; %d chapters found' % len(chapters)) for idx, chapter in enumerate(chapters): destination, opts = self._ffmpeg_args_for_chapter(idx + 1, chapter, info) - out_file_opts = self._set_out_opts(info['ext'], chapter.get('title', '')) + out_file_opts = self._set_out_opts(info['ext'], chapter.get('title', ''), str(idx + 1)) self.real_run_ffmpeg([(in_file, opts)], [(destination, out_file_opts)]) if in_file != info['filepath']: self._delete_downloaded_files(in_file, msg=None)