[postprocessor/ffmpeg] Extract `check_outdated` method
[youtube-dl] / youtube_dl / postprocessor / ffmpeg.py
index 0b60ac7e750bc2b308e4c7a8c01c8b988b036450..211faf69a6cfd6135416fb524ffb13e199cc4941 100644 (file)
@@ -20,6 +20,7 @@ from ..utils import (
     prepend_extension,
     shell_quote,
     subtitles_filename,
+    dfxp2srt,
 )
 
 
@@ -28,15 +29,16 @@ class FFmpegPostProcessorError(PostProcessingError):
 
 
 class FFmpegPostProcessor(PostProcessor):
-    def __init__(self, downloader=None, deletetempfiles=False):
+    def __init__(self, downloader=None):
         PostProcessor.__init__(self, downloader)
-        self._deletetempfiles = deletetempfiles
         self._determine_executables()
 
     def check_version(self):
         if not self.available:
             raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
+        self.check_outdated()
 
+    def check_outdated(self):
         required_version = '10-0' if self.basename == 'avconv' else '1.0'
         if is_outdated_version(
                 self._versions[self.basename], required_version):
@@ -44,6 +46,8 @@ class FFmpegPostProcessor(PostProcessor):
                 self.basename, self.basename, required_version)
             if self._downloader:
                 self._downloader.report_warning(warning)
+            return True
+        return False
 
     @staticmethod
     def get_versions(downloader=None):
@@ -146,10 +150,7 @@ class FFmpegPostProcessor(PostProcessor):
             stderr = stderr.decode('utf-8', 'replace')
             msg = stderr.strip().split('\n')[-1]
             raise FFmpegPostProcessorError(msg)
-        os.utime(encodeFilename(out_path), (oldest_mtime, oldest_mtime))
-        if self._deletetempfiles:
-            for ipath in input_paths:
-                os.remove(ipath)
+        self.try_utime(out_path, oldest_mtime, oldest_mtime)
 
     def run_ffmpeg(self, path, out_path, opts):
         self.run_ffmpeg_multiple_files([path], out_path, opts)
@@ -263,15 +264,14 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
         new_path = prefix + sep + extension
 
         # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
-        if new_path == path:
-            self._nopostoverwrites = True
+        if (new_path == path or
+                (self._nopostoverwrites and os.path.exists(encodeFilename(new_path)))):
+            self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path)
+            return [], information
 
         try:
-            if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
-                self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path)
-            else:
-                self._downloader.to_screen('[' + self.basename + '] Destination: ' + new_path)
-                self.run_ffmpeg(path, new_path, acodec, more_opts)
+            self._downloader.to_screen('[' + self.basename + '] Destination: ' + new_path)
+            self.run_ffmpeg(path, new_path, acodec, more_opts)
         except AudioConversionError as e:
             raise PostProcessingError(
                 'audio conversion failed: ' + e.msg)
@@ -280,13 +280,14 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
 
         # Try to update the date time for extracted audio file.
         if information.get('filetime') is not None:
-            try:
-                os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
-            except Exception:
-                self._downloader.report_warning('Cannot update utime of audio file')
+            self.try_utime(
+                new_path, time.time(), information['filetime'],
+                errnote='Cannot update utime of audio file')
 
         information['filepath'] = new_path
-        return self._nopostoverwrites, information
+        information['ext'] = extension
+
+        return [path], information
 
 
 class FFmpegVideoConvertorPP(FFmpegPostProcessor):
@@ -300,13 +301,13 @@ class FFmpegVideoConvertorPP(FFmpegPostProcessor):
         outpath = prefix + sep + self._preferedformat
         if information['ext'] == self._preferedformat:
             self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
-            return True, information
+            return [], information
         self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath)
         self.run_ffmpeg(path, outpath, [])
         information['filepath'] = outpath
         information['format'] = self._preferedformat
         information['ext'] = self._preferedformat
-        return False, information
+        return [path], information
 
 
 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
@@ -504,17 +505,18 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
         return cls._lang_map.get(code[:2])
 
     def run(self, information):
-        if information['ext'] != 'mp4':
-            self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 files')
-            return True, information
+        if information['ext'] not in ['mp4', 'mkv']:
+            self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 or mkv files')
+            return [], information
         subtitles = information.get('requested_subtitles')
         if not subtitles:
             self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed')
-            return True, information
+            return [], information
 
         sub_langs = list(subtitles.keys())
         filename = information['filepath']
-        input_files = [filename] + [subtitles_filename(filename, lang, sub_info['ext']) for lang, sub_info in subtitles.items()]
+        sub_filenames = [subtitles_filename(filename, lang, sub_info['ext']) for lang, sub_info in subtitles.items()]
+        input_files = [filename] + sub_filenames
 
         opts = [
             '-map', '0',
@@ -522,8 +524,9 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
             # Don't copy the existing subtitles, we may be running the
             # postprocessor a second time
             '-map', '-0:s',
-            '-c:s', 'mov_text',
         ]
+        if information['ext'] == 'mp4':
+            opts += ['-c:s', 'mov_text']
         for (i, lang) in enumerate(sub_langs):
             opts.extend(['-map', '%d:0' % (i + 1)])
             lang_code = self._conver_lang_code(lang)
@@ -536,7 +539,7 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
         os.remove(encodeFilename(filename))
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 
-        return True, information
+        return sub_filenames, information
 
 
 class FFmpegMetadataPP(FFmpegPostProcessor):
@@ -562,7 +565,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
 
         if not metadata:
             self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')
-            return True, info
+            return [], info
 
         filename = info['filepath']
         temp_filename = prepend_extension(filename, 'temp')
@@ -579,38 +582,25 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
         self.run_ffmpeg(filename, temp_filename, options)
         os.remove(encodeFilename(filename))
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
-        return True, info
+        return [], info
 
 
 class FFmpegMergerPP(FFmpegPostProcessor):
     def run(self, info):
         filename = info['filepath']
+        temp_filename = prepend_extension(filename, 'temp')
         args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0']
         self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename)
-        self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
-        return True, info
-
-
-class FFmpegAudioFixPP(FFmpegPostProcessor):
-    def run(self, info):
-        filename = info['filepath']
-        temp_filename = prepend_extension(filename, 'temp')
-
-        options = ['-vn', '-acodec', 'copy']
-        self._downloader.to_screen('[ffmpeg] Fixing audio file "%s"' % filename)
-        self.run_ffmpeg(filename, temp_filename, options)
-
-        os.remove(encodeFilename(filename))
+        self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
-
-        return True, info
+        return info['__files_to_merge'], info
 
 
 class FFmpegFixupStretchedPP(FFmpegPostProcessor):
     def run(self, info):
         stretched_ratio = info.get('stretched_ratio')
         if stretched_ratio is None or stretched_ratio == 1:
-            return True, info
+            return [], info
 
         filename = info['filepath']
         temp_filename = prepend_extension(filename, 'temp')
@@ -622,13 +612,13 @@ class FFmpegFixupStretchedPP(FFmpegPostProcessor):
         os.remove(encodeFilename(filename))
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 
-        return True, info
+        return [], info
 
 
 class FFmpegFixupM4aPP(FFmpegPostProcessor):
     def run(self, info):
         if info.get('container') != 'm4a_dash':
-            return True, info
+            return [], info
 
         filename = info['filepath']
         temp_filename = prepend_extension(filename, 'temp')
@@ -640,7 +630,7 @@ class FFmpegFixupM4aPP(FFmpegPostProcessor):
         os.remove(encodeFilename(filename))
         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 
-        return True, info
+        return [], info
 
 
 class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
@@ -657,7 +647,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
             new_format = 'webvtt'
         if subs is None:
             self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to convert')
-            return True, info
+            return [], info
         self._downloader.to_screen('[ffmpeg] Converting subtitles')
         for lang, sub in subs.items():
             ext = sub['ext']
@@ -667,6 +657,30 @@ 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])
@@ -677,4 +691,4 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
                     'data': f.read(),
                 }
 
-        return True, info
+        return [], info