foundations to directly use upoaded videos if format is usable
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44b4f092d1
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823b8f2136
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@ -97,6 +97,17 @@ def download(item_id, url):
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tmp = tmp.decode('utf-8')
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os.chdir(tmp)
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cmd = ['youtube-dl', '-q', media['url']]
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if settings.CONFIG['video'].get('reuseUload', False):
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max_resolution = max(settings.CONFIG['video']['resolutions'])
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format = settings.CONFIG['video']['formats'][0]
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if format == 'mp4':
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cmd += [
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'-f', 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/bestvideo+bestaudio',
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'--merge-output-format', 'mp4'
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]
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elif format == 'webm':
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cmd += ['--merge-output-format', 'webm']
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p = subprocess.Popen(cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, close_fds=True)
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@ -698,3 +698,99 @@ def chop(video, start, end, subtitles=None, dest=None, encode=False):
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return f
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else:
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return None
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def has_faststart(path):
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cmd = [settings.FFPROBE, '-v', 'trace', '-i', path]
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p = subprocess.Popen(cmd, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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close_fds=True)
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stdout, stderr = p.communicate()
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moov = "type:'moov'"
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mdat = "type:'mdat'"
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blocks = [b for b in stdout.decode().split('\n') if moov in b or mdat in b]
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if blocks and moov in blocks[0]:
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return True
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return False
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def remux_stream(src, dst):
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info = ox.avinfo(src)
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if info.get('audio'):
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audio = ['-c:a', 'copy']
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else:
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audio = []
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if info.get('video'):
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video = ['-c:v', 'copy']
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else:
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video = []
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cmd = [
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settings.FFMPEG,
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'-nostats', '-loglevel', 'error',
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'-map_metadata', '-1', '-sn',
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'-i', src,
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] + video + [
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] + audio + [
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'-movflags', '+faststart',
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dst
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]
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p = subprocess.Popen(cmd, stdin=subprocess.PIPE,
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stdout=open('/dev/null', 'w'),
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stderr=open('/dev/null', 'w'),
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close_fds=True)
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p.wait()
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return True, None
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def ffprobe(path, *args):
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cmd = [settings.FFPROBE, '-loglevel', 'error', '-print_format', 'json', '-i', path] + list(args)
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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return json.loads(stdout.decode())
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def get_chapters(path):
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info = ffprobe(path, '-show_chapters')
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chapters = []
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n = 0
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for chapter in info.get('chapters', []):
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n += 1
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chapters.append({
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'in': chapter['start_time'],
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'out': chapter['end_time'],
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'value': chapter.get('tags', {}).get('title', 'Chapter %s' % n)
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})
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return chapters
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def get_text_subtitles(path):
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subtitles = []
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for stream in ffprobe(path, '-show_streams')['streams']:
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if stream.get('codec_name') in ('subrip', 'aas', 'text'):
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subtitles.append({
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'index': stream['index'],
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'language': stream['tags']['language'],
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})
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return subtitles
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def has_img_subtitles(path):
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subtitles = []
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for stream in ffprobe(path, '-show_streams')['streams']:
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if stream.get('codec_type') == 'subtitle' and stream.get('codec_name') in ('dvbsub', 'pgssub'):
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subtitles.append({
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'index': stream['index'],
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'language': stream['tags']['language'],
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})
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return subtitles
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def extract_subtitles(path, language=None):
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extra = []
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if language:
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tracks = get_text_subtitles(path)
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track = [t for t in tracks if t['language'] == language]
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if track:
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extra = ['-map', '0:%s' % track[0]['index']]
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else:
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raise Exception("unknown language: %s" % language)
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cmd = ['ffmpeg', '-loglevel', 'error', '-i', path] + extra + ['-f', 'srt', '-']
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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return ox.srt.loads(stdout.decode())
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@ -376,6 +376,50 @@ class File(models.Model):
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return save_chunk(stream, stream.media, chunk, offset, name, done_cb)
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return False, 0
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def extract_text_data(self):
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if self.data:
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for sub in extract.get_text_subtitles(self.data.path):
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srt = extract.extract_subtitles(self.data.path, sub['language'])
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# fixme add subtitles, possibly with language!
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chapters = extract.get_chapters(self.data.path)
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if chapters:
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# fixme add chapters as notes
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pass
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def get_codec(self, type):
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track = self.info.get(type)
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if track:
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return track[0].get('codec')
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MP4_VCODECS = ['h264']
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MP4_ACODECS = ['aac', None]
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WEBM_VCODECS = ['vp8', 'vp9']
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WEBM_ACODECS = ['vorbis', 'opus', None]
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def can_remux(self):
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config = settings.CONFIG['video']
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height = self.info['video'][0]['height'] if self.info.get('video') else None
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max_resolution = max(config['resolutions'])
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if height <= max_resolution and self.extension in ('mov', 'mkv', 'mp4', 'm4v'):
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vcodec = self.get_codec('video')
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acodec = self.get_codec('audio')
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if vcodec in self.MP4_VCODECS and acodec in self.MP4_ACODECS:
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return True
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return False
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def can_stream(self):
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config = settings.CONFIG['video']
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height = self.info['video'][0]['height'] if self.info.get('video') else None
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max_resolution = max(config['resolutions'])
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if height <= max_resolution and config['formats'][0] == self.extension:
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vcodec = self.get_codec('video')
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acodec = self.get_codec('audio')
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if self.extension in ['mp4', 'm4v'] and vcodec in self.MP4_VCODECS and acodec in self.MP4_ACODECS:
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return extract.has_faststart(self.data.path)
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elif self.extension == 'webm' and vcodec in self.WEBM_VCODECS and acodec in self.WEBM_ACODECS:
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return True
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return False
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def stream_resolution(self):
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config = settings.CONFIG['video']
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height = self.info['video'][0]['height'] if self.info.get('video') else None
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@ -747,13 +791,27 @@ class Stream(models.Model):
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derivative.encode()
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def encode(self):
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reuse = settings.CONFIG['video'].get('reuseUpload', False)
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media = self.source.media.path if self.source else self.file.data.path
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if not self.media:
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self.media.name = self.path(self.name())
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target = self.media.path
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info = ox.avinfo(media)
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ok, error = extract.stream(media, target, self.name(), info, flags=self.flags)
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done = False
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if reuse and not self.source:
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if self.file.can_stream():
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ok, error = True, None
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ox.makedirs(os.path.dirname(target))
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shutil.move(self.file.data.path, target)
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self.file.data.name = ''
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self.file.save()
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elif self.file.can_remux():
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ok, error = extract.remux_stream(media, target)
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done = True
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if not done:
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ok, error = extract.stream(media, target, self.name(), info, flags=self.flags)
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# file could have been moved while encoding
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# get current version from db and update
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self.refresh_from_db()
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@ -178,6 +178,7 @@ CACHES = {
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AUTH_PROFILE_MODULE = 'user.UserProfile'
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AUTH_CHECK_USERNAME = True
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FFMPEG = 'ffmpeg'
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FFPROBE = 'ffprobe'
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FFMPEG_SUPPORTS_VP9 = True
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FFMPEG_DEBUG = False
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