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svtplay-dl/lib/svtplay_dl/postprocess/__init__.py
iwconfig b64dbf3c3e merge: Map video and audio tracks only once
When dealing with multiple subtitles, the singular video and audio tracks is added with each subtitle. This of course results in a multiplied file size which we don't want.
2019-08-22 20:47:39 +02:00

229 lines
9.6 KiB
Python

from json import dumps
from random import sample
import os
import platform
import re
import logging
from shutil import which
from requests import post, codes, Timeout
from re import match
from svtplay_dl.utils.output import formatname
from svtplay_dl.utils.proc import run_program
class postprocess(object):
def __init__(self, stream, config, subfixes=None):
self.stream = stream
self.config = config
self.subfixes = subfixes
self.detect = None
for i in ["ffmpeg", "avconv"]:
self.detect = which(i)
if self.detect:
break
def sublanguage(self):
# parse() function partly borrowed from a guy on github. /thanks!
# https://github.com/riobard/srt.py/blob/master/srt.py
def parse(self):
def parse_block(block):
lines = block.strip('-').split('\n')
txt = '\r\n'.join(lines[2:])
return txt
if platform.system() == "Windows":
fd = open(self, encoding="utf8")
else:
fd = open(self)
return list(map(parse_block,
fd.read().strip().replace('\r', '').split('\n\n')))
def query(self):
_ = parse(self)
random_sentences = ' '.join(sample(_, len(_) if len(_) < 8 else 8)).replace('\r\n', '')
url = 'https://whatlanguage.herokuapp.com'
payload = {"query": random_sentences}
# Note: requests handles json from version 2.4.2 and onwards so i use json.dumps for now.
headers = {'content-type': 'application/json'}
try:
# Note: reasonable timeout i guess? svtplay-dl is mainly used while multitasking i presume,
# and it is heroku after all (fast enough)
r = post(url, data=dumps(payload), headers=headers, timeout=30)
if r.status_code == codes.ok:
try:
response = r.json()
return response['language']
except TypeError:
return 'und'
else:
logging.error("Server error appeared. Setting language as undetermined.")
return 'und'
except Timeout:
logging.error("30 seconds server timeout reached. Setting language as undetermined.")
return 'und'
langs = []
exceptions = {
'lulesamiska': 'smj',
'meankieli': 'fit',
'jiddisch': 'yid'
}
if self.subfixes and len(self.subfixes) >= 2:
logging.info("Determining the languages of the subtitles.")
else:
logging.info("Determining the language of the subtitle.")
if self.config.get("get_all_subtitles"):
for subfix in self.subfixes:
if [exceptions[key] for key in exceptions.keys() if match(key, subfix.strip('-'))]:
if 'oversattning' in subfix.strip('-'):
subfix = subfix.strip('-').split('.')[0]
else:
subfix = subfix.strip('-')
langs += [exceptions[subfix]]
continue
subfile = "{0}.srt".format(os.path.splitext(formatname(self.stream.output, self.config,
self.stream.output_extention))[0] + subfix)
langs += [query(subfile)]
else:
subfile = "{0}.srt".format(os.path.splitext(formatname(self.stream.output, self.config,
self.stream.output_extention))[0])
langs += [query(subfile)]
if len(langs) >= 2:
logging.info("Language codes: " + ', '.join(langs))
else:
logging.info("Language code: " + langs[0])
return langs
def remux(self):
if self.detect is None:
logging.error("Cant detect ffmpeg or avconv. Cant mux files without it.")
return
if self.stream.finished is False:
return
if formatname(self.stream.output, self.config, self.stream.output_extention).endswith('.mp4') is False:
orig_filename = formatname(self.stream.output, self.config, self.stream.output_extention)
name, ext = os.path.splitext(orig_filename)
new_name = u"{0}.mp4".format(name)
cmd = [self.detect, "-i", orig_filename]
_, stdout, stderr = run_program(cmd, False) # return 1 is good here.
videotrack, audiotrack = self._checktracks(stderr)
if self.config.get("merge_subtitle"):
logging.info(u"Muxing {0} and merging its subtitle into {1}".format(orig_filename, new_name))
else:
logging.info(u"Muxing {0} into {1}".format(orig_filename, new_name))
tempfile = u"{0}.temp".format(orig_filename)
arguments = ["-map", "0:{}".format(videotrack), "-map", "0:{}".format(audiotrack), "-c", "copy", "-f", "mp4"]
if ext == ".ts":
arguments += ["-bsf:a", "aac_adtstoasc"]
if self.config.get("merge_subtitle"):
langs = self.sublanguage()
for stream_num, language in enumerate(langs):
arguments += ["-map", str(stream_num + 1), "-c:s:" + str(stream_num), "mov_text",
"-metadata:s:s:" + str(stream_num), "language=" + language]
if self.subfixes and len(self.subfixes) >= 2:
for subfix in self.subfixes:
subfile = "{0}.srt".format(name + subfix)
cmd += ["-i", subfile]
else:
subfile = "{0}.srt".format(name)
cmd += ["-i", subfile]
arguments += ["-y", tempfile]
cmd += arguments
returncode, stdout, stderr = run_program(cmd)
if returncode != 0:
return
if self.config.get("merge_subtitle") and not self.config.get("subtitle"):
logging.info("Muxing done, removing the old files.")
if self.subfixes and len(self.subfixes) >= 2:
for subfix in self.subfixes:
subfile = "{0}.srt".format(name + subfix)
os.remove(subfile)
else:
os.remove(subfile)
else:
logging.info("Muxing done, removing the old file.")
os.remove(orig_filename)
os.rename(tempfile, new_name)
def merge(self):
if self.detect is None:
logging.error("Cant detect ffmpeg or avconv. Cant mux files without it.")
return
if self.stream.finished is False:
return
orig_filename = formatname(self.stream.output, self.config, self.stream.output_extention)
cmd = [self.detect, "-i", orig_filename]
_, stdout, stderr = run_program(cmd, False) # return 1 is good here.
videotrack, audiotrack = self._checktracks(stderr)
if self.config.get("merge_subtitle"):
logging.info("Merge audio, video and subtitle into {0}".format(orig_filename))
else:
logging.info("Merge audio and video into {0}".format(orig_filename))
tempfile = u"{0}.temp".format(orig_filename)
name, ext = os.path.splitext(orig_filename)
arguments = ["-c:v", "copy", "-c:a", "copy", "-f", "mp4"]
if ext == ".ts":
audio_filename = u"{0}.audio.ts".format(name)
arguments += ["-bsf:a", "aac_adtstoasc"]
else:
audio_filename = u"{0}.m4a".format(name)
cmd = [self.detect, "-i", orig_filename, "-i", audio_filename]
arguments += ["-map", "{}".format(videotrack), "-map", "{}".format(audiotrack)]
if self.config.get("merge_subtitle"):
langs = self.sublanguage()
for stream_num, language in enumerate(langs, start=audiotrack + 1):
arguments += ["-map", str(stream_num), "-c:s:" + str(stream_num - 2), "mov_text",
"-metadata:s:s:" + str(stream_num - 2), "language=" + language]
if self.subfixes and len(self.subfixes) >= 2:
for subfix in self.subfixes:
subfile = "{0}.srt".format(name + subfix)
cmd += ["-i", subfile]
else:
subfile = "{0}.srt".format(name)
cmd += ["-i", subfile]
arguments += ["-y", tempfile]
cmd += arguments
returncode, stdout, stderr = run_program(cmd)
if returncode != 0:
return
logging.info("Merging done, removing old files.")
os.remove(orig_filename)
os.remove(audio_filename)
if self.config.get("merge_subtitle") and not self.config.get("subtitle"):
if self.subfixes and len(self.subfixes) >= 2:
for subfix in self.subfixes:
subfile = "{0}.srt".format(name + subfix)
os.remove(subfile)
else:
os.remove(subfile)
os.rename(tempfile, orig_filename)
def _checktracks(self, output):
allstuff = re.findall(r"Stream \#\d:(\d)\[[^\[]+\]([\(\)\w]+)?: (Video|Audio): (.*)", output)
videotrack = 0
audiotrack = 1
for stream in allstuff:
if stream[2] == "Video":
videotrack = stream[0]
if stream[2] == "Audio":
if stream[3] == "mp3, 0 channels":
continue
audiotrack = stream[0]
return videotrack, audiotrack