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videoservice.py
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videoservice.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#######################################################################
#
# VidCutter - media cutter & joiner
#
# copyright © 2018 Pete Alexandrou
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#######################################################################
import errno
import logging
import os
import re
import shlex
import sys
from bisect import bisect_left
from functools import partial
from typing import List, Optional, Union
from PyQt5.QtCore import (pyqtSignal, pyqtSlot, QDir, QFileInfo, QObject, QProcess, QProcessEnvironment, QSettings,
QSize, QStandardPaths, QStorageInfo, QTemporaryFile, QTime)
from PyQt5.QtGui import QPainter, QPixmap
from PyQt5.QtWidgets import QMessageBox, QWidget
from vidcutter.libs.config import Config, InvalidMediaException, Streams, ToolNotFoundException
from vidcutter.libs.ffmetadata import FFMetadata
from vidcutter.libs.munch import Munch
from vidcutter.libs.widgets import VCMessageBox
try:
# noinspection PyPackageRequirements
from simplejson import loads, JSONDecodeError
except ImportError:
from json import loads, JSONDecodeError
class VideoService(QObject):
progress = pyqtSignal(int)
finished = pyqtSignal(bool, str)
error = pyqtSignal(str)
addScenes = pyqtSignal(list)
frozen = getattr(sys, 'frozen', False)
spaceWarningThreshold = 200
spaceWarningDelivered = False
smartcutError = False
config = Config()
def __init__(self, settings: QSettings, parent: QWidget):
super(VideoService, self).__init__(parent)
self.settings = settings
self.parent = parent
self.logger = logging.getLogger(__name__)
try:
self.backends = VideoService.findBackends(self.settings)
self.proc = VideoService.initProc()
if hasattr(self.proc, 'errorOccurred'):
self.proc.errorOccurred.connect(self.cmdError)
self.lastError = ''
self.media, self.source = None, None
self.chapter_metadata = None
self.keyframes = []
self.streams = Munch()
self.mappings = []
except ToolNotFoundException as e:
self.logger.exception(e.msg, exc_info=True)
QMessageBox.critical(getattr(self, 'parent', None), 'Missing libraries', e.msg)
def setMedia(self, source: str) -> None:
try:
self.source = QDir.toNativeSeparators(source)
self.media = self.probe(source)
if self.media is not None:
if getattr(self.parent, 'verboseLogs', False):
self.logger.info(self.media)
for codec_type in Streams.__members__:
setattr(self.streams, codec_type.lower(),
[stream for stream in self.media.streams if stream.codec_type == codec_type.lower()])
if len(self.streams.video):
self.streams.video = self.streams.video[0] # we always assume one video stream per media file
else:
raise InvalidMediaException('Could not load video stream for {}'.format(source))
self.mappings.clear()
# noinspection PyUnusedLocal
[self.mappings.append(True) for i in range(int(self.media.format.nb_streams))]
except OSError as e:
if e.errno == errno.ENOENT:
errormsg = '{0}: {1}'.format(os.strerror(errno.ENOENT), source)
self.logger.error(errormsg)
raise FileNotFoundError(errormsg)
@staticmethod
def findBackends(settings: QSettings) -> Munch:
tools = Munch(ffmpeg=None, ffprobe=None, mediainfo=None)
settings.beginGroup('tools')
tools.ffmpeg = settings.value('ffmpeg', None, type=str)
tools.ffprobe = settings.value('ffprobe', None, type=str)
tools.mediainfo = settings.value('mediainfo', None, type=str)
for tool in list(tools.keys()):
path = tools[tool]
if path is None or not len(path) or not os.path.isfile(path):
for exe in VideoService.config.binaries[os.name][tool]:
if VideoService.frozen:
binpath = VideoService.getAppPath(os.path.join('bin', exe))
else:
binpath = QStandardPaths.findExecutable(exe)
if not len(binpath):
binpath = QStandardPaths.findExecutable(exe, [VideoService.getAppPath('bin')])
if os.path.isfile(binpath) and os.access(binpath, os.X_OK):
tools[tool] = binpath
if not VideoService.frozen:
settings.setValue(tool, binpath)
break
settings.endGroup()
if tools.ffmpeg is None:
raise ToolNotFoundException('FFmpeg missing')
if tools.ffprobe is None:
raise ToolNotFoundException('FFprobe missing')
if tools.mediainfo is None:
raise ToolNotFoundException('MediaInfo missing')
return tools
@staticmethod
def initProc(program: str=None, finish: pyqtSlot=None, workingdir: str=None) -> QProcess:
p = QProcess()
p.setProcessEnvironment(QProcessEnvironment.systemEnvironment())
p.setProcessChannelMode(QProcess.MergedChannels)
if workingdir is not None:
p.setWorkingDirectory(workingdir)
if program is not None:
p.setProgram(program)
if finish is not None:
p.finished.connect(finish)
return p
def checkDiskSpace(self, path: str) -> None:
# noinspection PyCallByClass
if self.spaceWarningDelivered or not QFileInfo.exists(path):
return
info = QStorageInfo(path)
available = info.bytesAvailable() / 1000 / 1000
if available < VideoService.spaceWarningThreshold:
warnmsg = 'There is less than {}MB of free disk space in the '.format(VideoService.spaceWarningThreshold)
warnmsg += 'folder selected to save your media. '
warnmsg += 'VidCutter will fail if space runs out before processing completes.'
spacewarn = VCMessageBox('Warning', 'Disk space alert', warnmsg, self.parentWidget())
spacewarn.addButton(VCMessageBox.Ok)
spacewarn.exec_()
self.spaceWarningDelivered = True
@staticmethod
def captureFrame(settings: QSettings, source: str, frametime: str, thumbsize: QSize=None,
external: bool=False) -> QPixmap:
if thumbsize is None:
thumbsize = VideoService.config.thumbnails['INDEX']
capres = QPixmap()
img = QTemporaryFile(os.path.join(QDir.tempPath(), 'XXXXXX.jpg'))
if img.open():
imagecap = img.fileName()
cmd = VideoService.findBackends(settings).ffmpeg
tsize = '{0:d}x{1:d}'.format(thumbsize.width(), thumbsize.height())
args = '-hide_banner -ss {frametime} -i "{source}" -vframes 1 -s {tsize} -y "{imagecap}"'.format(**locals())
proc = VideoService.initProc()
if proc.state() == QProcess.NotRunning:
proc.start(cmd, shlex.split(args))
proc.waitForFinished(-1)
if proc.exitStatus() == QProcess.NormalExit and proc.exitCode() == 0:
capres = QPixmap(imagecap, 'JPG')
if external:
painter = QPainter(capres)
painter.drawPixmap(0, 0, QPixmap(':/images/external.png', 'PNG'))
painter.end()
img.remove()
return capres
# noinspection PyBroadException
def testJoin(self, file1: str, file2: str) -> bool:
result = False
self.logger.info('attempting to test joining of "{0}" & "{1}"'.format(file1, file2))
try:
# 1. check audio + video codecs
file1_codecs = self.codecs(file1)
file2_codecs = self.codecs(file2)
if file1_codecs != file2_codecs:
self.logger.info('join test failed for {0} and {1}: codecs mismatched'.format(file1, file2))
self.lastError = '<p>The audio + video format of this media file is not the same as the files ' \
'already in your clip index.</p>' \
'<div align="center">Current files are <b>{0}</b> (video) and ' \
'<b>{1}</b> (audio)<br/>' \
'Failed media is <b>{2}</b> (video) and <b>{3}</b> (audio)</div>'
self.lastError = self.lastError.format(file1_codecs[0], file1_codecs[1],
file2_codecs[0], file2_codecs[1])
return result
# 2. check frame sizes
size1 = self.framesize(file1)
size2 = self.framesize(file2)
if size1 != size2:
self.logger.info('join test failed for {0} and {1}: frame size mismatched'.format(file1, file2))
self.lastError = '<p>The frame size of this media file is not the same as the files already in ' \
'your clip index.</p>' \
'<div align="center">Current media clips are <b>{0}x{1}</b>' \
'<br/>Failed media file is <b>{2}x{3}</b></div>'
self.lastError = self.lastError.format(size1.width(), size1.height(), size2.width(), size2.height())
return result
# 2. generate temporary file handles
_, ext = os.path.splitext(file1)
file1_cut = QTemporaryFile(os.path.join(QDir.tempPath(), 'XXXXXX{}'.format(ext)))
file2_cut = QTemporaryFile(os.path.join(QDir.tempPath(), 'XXXXXX{}'.format(ext)))
final_join = QTemporaryFile(os.path.join(QDir.tempPath(), 'XXXXXX{}'.format(ext)))
# 3. produce 4 secs clips from input files for join test
if file1_cut.open() and file2_cut.open() and final_join.open():
result1 = self.cut(file1, file1_cut.fileName(), '00:00:00.000', '00:00:04.00', False)
result2 = self.cut(file2, file2_cut.fileName(), '00:00:00.000', '00:00:04.00', False)
if result1 and result2:
# 4. attempt join of temp 2 second clips
result = self.join([file1_cut.fileName(), file2_cut.fileName()],
final_join.fileName(), False, None)
VideoService.cleanup([file1_cut.fileName(), file2_cut.fileName(), final_join.fileName()])
except BaseException:
self.logger.exception('Exception in VideoService.testJoin', exc_info=True)
result = False
return result
def framesize(self, source: str = None) -> QSize:
if source is None and hasattr(self.streams, 'video'):
return QSize(int(self.streams.video.width), int(self.streams.video.height))
else:
args = '-i "{}"'.format(source)
result = self.cmdExec(self.backends.ffmpeg, args, True)
matches = re.search(r'Stream.*Video:.*[,\s](?P<width>\d+?)x(?P<height>\d+?)[,\s]',
result, re.DOTALL).groupdict()
return QSize(int(matches['width']), int(matches['height']))
def duration(self, source: str = None) -> QTime:
if source is None and hasattr(self.media, 'format') and self.parent is not None:
return self.parent.delta2QTime(float(self.media.format.duration))
else:
args = '-i "{}"'.format(source)
result = self.cmdExec(self.backends.ffmpeg, args, True)
matches = re.search(r'Duration:\s(?P<hrs>\d+?):(?P<mins>\d+?):(?P<secs>\d+\.\d+?),',
result, re.DOTALL).groupdict()
secs, msecs = matches['secs'].split('.')
return QTime(int(matches['hrs']), int(matches['mins']), int(secs), int(msecs))
def codecs(self, source: str = None) -> tuple:
if source is None and hasattr(self.streams, 'video'):
return self.streams.video.codec_name, self.streams.audio[0].codec_name if len(self.streams.audio) else None
else:
args = '-i "{}"'.format(source)
result = self.cmdExec(self.backends.ffmpeg, args, True)
vcodec = re.search(r'Stream.*Video:\s(\w+)', result).group(1)
acodec = re.search(r'Stream.*Audio:\s(\w+)', result).group(1)
return vcodec, acodec
def parseMappings(self, allstreams: bool = True) -> str:
if not len(self.mappings) or (self.parent is not None and self.parent.hasExternals()):
return '-map 0 ' if allstreams else ''
# if False not in self.mappings:
# return '-map 0 '
output = ''
for stream_id in range(len(self.mappings)):
if self.mappings[stream_id]:
output += '-map 0:{} '.format(stream_id)
return output
def finalize(self, source: str) -> bool:
self.checkDiskSpace(source)
source_file, source_ext = os.path.splitext(source)
final_filename = '{0}_FINAL{1}'.format(source_file, source_ext)
args = '-v error -i "{}" -map 0 -c copy -y "{}"'.format(source, final_filename)
result = self.cmdExec(self.backends.ffmpeg, args)
if result and os.path.exists(final_filename):
os.replace(final_filename, source)
return True
return False
def cut(self, source: str, output: str, frametime: str, duration: str, allstreams: bool=True, vcodec: str=None,
run: bool=True) -> Union[bool, str]:
self.checkDiskSpace(output)
stream_map = self.parseMappings(allstreams)
if vcodec is not None:
encode_options = VideoService.config.encoding.get(vcodec, vcodec)
args = '-v 32 -i "{}" -ss {} -t {} -c:v {} -c:a copy -c:s copy {}-avoid_negative_ts 1 ' \
'-y "{}"'.format(source, frametime, duration, encode_options, stream_map, output)
else:
args = '-v error -ss {} -t {} -i "{}" -c copy {}-avoid_negative_ts 1 -y "{}"' \
.format(frametime, duration, source, stream_map, output)
if run:
result = self.cmdExec(self.backends.ffmpeg, args)
if not result or os.path.getsize(output) < 1000:
if allstreams:
# cut failed so try again without mapping all media streams
self.logger.info('cut resulted in zero length file, trying again without all stream mapping')
self.cut(source, output, frametime, duration, False)
else:
# both attempts to cut have failed so exit and let user know
VideoService.cleanup([output])
return False
return True
else:
if os.getenv('DEBUG', False) or getattr(self.parent, 'verboseLogs', False):
self.logger.info(args)
return args
def smartinit(self, clips: int):
self.smartcut_jobs = []
# noinspection PyUnusedLocal
[
self.smartcut_jobs.append(Munch(output='', bitrate=0, allstreams=True, procs={}, files={}, results={}))
for index in range(clips)
]
def smartcut(self, index: int, source: str, output: str, start: float, end: float, allstreams: bool = True) -> None:
output_file, output_ext = os.path.splitext(output)
bisections = self.getGOPbisections(source, start, end)
self.smartcut_jobs[index].output = output
self.smartcut_jobs[index].allstreams = allstreams
# ----------------------[ STEP 1 - start of clip if not starting on a keyframe ]-------------------------
if bisections['start'][1] > bisections['start'][0]:
self.smartcut_jobs[index].files.update(start='{0}_start_{1}{2}'
.format(output_file, '{0:0>2}'.format(index), output_ext))
startproc = VideoService.initProc(self.backends.ffmpeg, self.smartcheck, os.path.dirname(source))
startproc.setObjectName('start.{}'.format(index))
startproc.started.connect(lambda: self.progress.emit(index))
startproc.setArguments(shlex.split(
self.cut(source=source,
output=self.smartcut_jobs[index].files['start'],
frametime=str(start),
duration=bisections['start'][1] - start,
allstreams=allstreams,
vcodec=self.streams.video.codec_name,
run=False)))
self.smartcut_jobs[index].procs.update(start=startproc)
self.smartcut_jobs[index].results.update(start=False)
startproc.start()
# ----------------------[ STEP 2 - cut middle segment of clip ]-------------------------
self.smartcut_jobs[index].files.update(middle='{0}_middle_{1}{2}'
.format(output_file, '{0:0>2}'.format(index), output_ext))
middleproc = VideoService.initProc(self.backends.ffmpeg, self.smartcheck, os.path.dirname(source))
middleproc.setProcessChannelMode(QProcess.MergedChannels)
middleproc.setWorkingDirectory(os.path.dirname(self.smartcut_jobs[index].files['middle']))
middleproc.setObjectName('middle.{}'.format(index))
middleproc.started.connect(lambda: self.progress.emit(index))
middleproc.setArguments(shlex.split(
self.cut(source=source,
output=self.smartcut_jobs[index].files['middle'],
frametime=bisections['start'][2],
duration=bisections['end'][1] - bisections['start'][2],
allstreams=allstreams,
run=False)))
self.smartcut_jobs[index].procs.update(middle=middleproc)
self.smartcut_jobs[index].results.update(middle=False)
if len(self.smartcut_jobs[index].procs) == 1:
middleproc.start()
# ----------------------[ STEP 3 - end of clip if not ending on a keyframe ]-------------------------
if bisections['end'][2] > bisections['end'][1]:
self.smartcut_jobs[index].files.update(end='{0}_end_{1}{2}'
.format(output_file, '{0:0>2}'.format(index), output_ext))
endproc = VideoService.initProc(self.backends.ffmpeg, self.smartcheck, os.path.dirname(source))
endproc.setObjectName('end.{}'.format(index))
endproc.started.connect(lambda: self.progress.emit(index))
endproc.setArguments(shlex.split(
self.cut(source=source,
output=self.smartcut_jobs[index].files['end'],
frametime=bisections['end'][1],
duration=end - bisections['end'][1],
allstreams=allstreams,
vcodec=self.streams.video.codec_name,
run=False)))
self.smartcut_jobs[index].procs.update(end=endproc)
self.smartcut_jobs[index].results.update(end=False)
@pyqtSlot(int, QProcess.ExitStatus)
def smartcheck(self, code: int, status: QProcess.ExitStatus) -> None:
if hasattr(self, 'smartcut_jobs') and not self.smartcutError:
name, index = self.sender().objectName().split('.')
index = int(index)
self.smartcut_jobs[index].results[name] = (code == 0 and status == QProcess.NormalExit)
if os.getenv('DEBUG', False) or getattr(self.parent, 'verboseLogs', False):
self.logger.info('SmartCut progress: {}'.format(self.smartcut_jobs[index].results))
resultfile = self.smartcut_jobs[index].files.get(name)
if not self.smartcut_jobs[index].results[name] or os.path.getsize(resultfile) < 1000:
args = self.smartcut_jobs[index].procs[name].arguments()
if '-map' in args:
self.logger.info('SmartCut resulted in zero length file, trying again without all stream mapping')
pos = args.index('-map')
args.remove('-map')
del args[pos]
self.smartcut_jobs[index].procs[name].setArguments(args)
self.smartcut_jobs[index].procs[name].started.disconnect()
self.smartcut_jobs[index].procs[name].start()
return
else:
self.smartcutError = True
# both attempts to cut have failed so exit and let user know
self.logger.error('Error executing: {0} {1}'
.format(self.smartcut_jobs[index].procs[name].program(), args))
self.error.emit('SmartCut failed to cut media file. Please ensure your media files are valid '
'otherwise try again with SmartCut disabled.')
return
if False not in self.smartcut_jobs[index].results.values():
self.smartjoin(index)
else:
if name == 'start':
self.smartcut_jobs[index].procs['middle'].start()
elif name == 'middle':
self.smartcut_jobs[index].procs['end'].start()
def smartabort(self):
for job in self.smartcut_jobs:
for name in job.procs:
if job.procs[name].state() != QProcess.NotRunning:
job.procs[name].terminate()
VideoService.cleanup(job.files)
def smartjoin(self, index: int) -> None:
self.progress.emit(index)
final_join = False
joinlist = [
self.smartcut_jobs[index].files.get('start'),
self.smartcut_jobs[index].files.get('middle'),
self.smartcut_jobs[index].files.get('end')
]
if self.isMPEGcodec(joinlist[1]):
self.logger.info('smartcut files are MPEG based so join via MPEG-TS')
final_join = self.mpegtsJoin(joinlist, self.smartcut_jobs[index].output, None)
if not final_join:
self.logger.info('smartcut MPEG-TS join failed, retry with standard concat')
final_join = self.join(joinlist, self.smartcut_jobs[index].output,
self.smartcut_jobs[index].allstreams, None)
VideoService.cleanup(joinlist)
self.finished.emit(final_join, self.smartcut_jobs[index].output)
@staticmethod
def cleanup(files: List[str]) -> None:
try:
[os.remove(file) for file in files]
except FileNotFoundError:
pass
def join(self, inputs: List[str], output: str, allstreams: bool=True, chapters: Optional[List[str]]=None) -> bool:
self.checkDiskSpace(output)
filelist = os.path.normpath(os.path.join(os.path.dirname(inputs[0]), '_vidcutter.list'))
with open(filelist, 'w') as f:
[f.write('file \'{}\'\n'.format(file.replace("'", "\\'"))) for file in inputs]
stream_map = '-map 0 ' if allstreams else ''
ffmetadata = None
if chapters is not None and len(chapters):
ffmetadata = self.getChapterFile(inputs, chapters)
metadata = '-i "{}" -map_metadata 1 '.format(ffmetadata)
else:
metadata = ''
args = '-v error -f concat -safe 0 -i "{0}" {1}-c copy {2}-y "{3}"'
result = self.cmdExec(self.backends.ffmpeg, args.format(filelist, metadata, stream_map, output))
os.remove(filelist)
if chapters and ffmetadata is not None:
os.remove(ffmetadata)
return result
def getChapterFile(self, scenes: List[str], titles: List[str]=None) -> str:
ffmetadata = FFMetadata()
pos = 0
for index, scene in enumerate(scenes):
duration = self.duration(scene)
end = pos + duration.msecsSinceStartOfDay()
ffmetadata.add_chapter(pos, end, titles[index])
pos = end
ffmetafile = os.path.normpath(os.path.join(os.path.dirname(scenes[0]), 'ffmetadata.txt'))
with open(ffmetafile, 'w') as f:
f.write(ffmetadata.output())
return ffmetafile
def getBSF(self, source: str) -> tuple:
vbsf, absf = '', ''
vcodec, acodec = self.codecs(source)
if vcodec:
prefix = '-bsf:v'
if vcodec == 'hevc':
vbsf = '{} hevc_mp4toannexb'.format(prefix)
elif vcodec == 'h264':
vbsf = '{} h264_mp4toannexb'.format(prefix)
elif vcodec == 'mpeg4':
vbsf = '{} mpeg4_unpack_bframes'.format(prefix)
elif vcodec in {'webm', 'ivf', 'vp9'}:
vbsf = '{} vp9_superframe'.format(prefix)
if acodec:
prefix = '-bsf:a'
if acodec == 'aac':
absf = '{} aac_adtstoasc'.format(prefix)
elif acodec == 'mp3':
absf = '{} mp3decomp'.format(prefix)
return vbsf, absf
def blackdetect(self, min_duration: float) -> None:
try:
args = '-f lavfi -i "movie=\'{0}\',blackdetect=d={1:.1f}[out0]" '.format(os.path.basename(self.source),
min_duration)
args += '-show_entries tags=lavfi.black_start,lavfi.black_end -of default=nw=1 -hide_banner'
if os.getenv('DEBUG', False) or getattr(self.parent, 'verboseLogs', False):
self.logger.info('{0} {1}'.format(self.backends.ffprobe, args))
self.filterproc = VideoService.initProc(self.backends.ffprobe, lambda: self.on_blackdetect(min_duration),
os.path.dirname(self.source))
self.filterproc.setArguments(shlex.split(args))
self.filterproc.start()
except FileNotFoundError:
self.logger.exception('Could not find media file: {}'.format(self.source), exc_info=True)
raise
def on_blackdetect(self, min_duration: float) -> None:
if self.filterproc.exitStatus() == QProcess.NormalExit and self.filterproc.exitCode() == 0:
scenes = [[QTime(0, 0)]]
results = self.filterproc.readAllStandardOutput().data().decode().strip()
for line in results.split('\n'):
if re.match(r'\[blackdetect @ (.*)\]', line):
vals = line.split(']')[1].strip().split(' ')
start = float(vals[0].replace('black_start:', ''))
end = float(vals[1].replace('black_end:', ''))
dur = float(vals[2].replace('black_duration:', ''))
if dur >= min_duration:
scenes[len(scenes) - 1].append(self.parent.delta2QTime(start))
scenes.append([self.parent.delta2QTime(end)])
last = scenes[len(scenes) - 1][0]
dur = self.duration()
if last < dur and (last.msecsTo(dur) / 1000) >= min_duration:
scenes[len(scenes) - 1].append(dur)
else:
scenes.pop()
if os.getenv('DEBUG', False) or getattr(self.parent, 'verboseLogs', False):
self.logger.info(scenes)
self.addScenes.emit(scenes)
def killFilterProc(self) -> None:
if hasattr(self, 'filterproc') and self.filterproc.state() != QProcess.NotRunning:
self.filterproc.kill()
def probe(self, source: str) -> Munch:
try:
args = '-v error -show_streams -show_format -of json "{}"'.format(source)
json_data = self.cmdExec(self.backends.ffprobe, args, output=True, mergechannels=False)
return Munch.fromDict(loads(json_data))
except FileNotFoundError:
self.logger.exception('FFprobe could not find media file: {}'.format(source), exc_info=True)
raise
except JSONDecodeError:
self.logger.exception('FFprobe JSON decoding error', exc_info=True)
raise
def getKeyframes(self, source: str, formatted_time: bool = False) -> list:
if len(self.keyframes) and source == self.source:
return self.keyframes
timecode = '0:00:00.000000' if formatted_time else 0
args = '-v error -show_packets -select_streams v -show_entries packet=pts_time,flags ' \
'{0}-of csv "{1}"'.format('-sexagesimal ' if formatted_time else '', source)
result = self.cmdExec(self.backends.ffprobe, args, output=True, suppresslog=True, mergechannels=False)
keyframe_times = []
for line in result.split('\n'):
if line.split(',')[1] != 'N/A':
timecode = line.split(',')[1]
if re.search(',K', line):
if formatted_time:
keyframe_times.append(timecode[:-3])
else:
keyframe_times.append(float(timecode))
last_keyframe = self.duration().toString('h:mm:ss.zzz')
if keyframe_times[-1] != last_keyframe:
keyframe_times.append(last_keyframe)
if source == self.source and not formatted_time:
self.keyframes = keyframe_times
return keyframe_times
def getGOPbisections(self, source: str, start: float, end: float) -> dict:
keyframes = self.getKeyframes(source)
start_pos = bisect_left(keyframes, start)
end_pos = bisect_left(keyframes, end)
return {
'start': (
keyframes[start_pos - 1] if start_pos > 0 else keyframes[start_pos],
keyframes[start_pos],
keyframes[start_pos + 1]
),
'end': (
keyframes[end_pos - 2] if end_pos != (len(keyframes) - 1) else keyframes[end_pos - 1],
keyframes[end_pos - 1] if end_pos != (len(keyframes) - 1) else keyframes[end_pos],
keyframes[end_pos]
)
}
def isMPEGcodec(self, source: str = None) -> bool:
if source is None and hasattr(self.streams, 'video'):
codec = self.streams.video.codec_name
else:
codec = self.codecs(source)[0].lower()
if codec == 'mpeg4' and os.path.splitext(source)[1] == '.avi':
return False
return codec in VideoService.config.mpeg_formats
# noinspection PyBroadException
def mpegtsJoin(self, inputs: list, output: str, chapters: Optional[List[str]]=None) -> bool:
result = False
try:
self.checkDiskSpace(output)
outfiles = []
video_bsf, audio_bsf = self.getBSF(inputs[0])
# 1. transcode to mpeg transport streams
for file in inputs:
name, _ = os.path.splitext(file)
outfile = '{}.ts'.format(name)
outfiles.append(outfile)
if os.path.isfile(outfile):
os.remove(outfile)
args = '-v error -i "{0}" -c copy -map 0 {1} -f mpegts "{2}"'.format(file, video_bsf, outfile)
if not self.cmdExec(self.backends.ffmpeg, args):
return result
# 2. losslessly concatenate at the file level
if len(outfiles):
if os.path.isfile(output):
os.remove(output)
ffmetadata = None
if chapters is not None and len(chapters):
ffmetadata = self.getChapterFile(outfiles, chapters)
metadata = '-i "{}" -map_metadata 1 '.format(ffmetadata)
else:
metadata = ''
args = '-v error -i "concat:{0}" {1}-c copy {2} "{3}"' \
.format("|".join(map(str, outfiles)), metadata, audio_bsf, output)
result = self.cmdExec(self.backends.ffmpeg, args)
# 3. cleanup mpegts files
[os.remove(file) for file in outfiles]
if chapters and ffmetadata is not None:
os.remove(ffmetadata)
except BaseException:
self.logger.exception('Exception during MPEG-TS join', exc_info=True)
result = False
return result
def version(self) -> str:
args = '-version'
result = self.cmdExec(self.backends.ffmpeg, args, True)
return re.search(r'ffmpeg\sversion\s([\S]+)\s', result).group(1)
def mediainfo(self, source: str, output: str = 'HTML') -> str:
args = '--output={0} "{1}"'.format(output, source)
return self.cmdExec(self.backends.mediainfo, args, True, True)
def cmdExec(self, cmd: str, args: str=None, output: bool=False, suppresslog: bool=False, workdir: str=None,
mergechannels: bool=True):
if self.proc.state() == QProcess.NotRunning:
if cmd == self.backends.mediainfo or not mergechannels:
self.proc.setProcessChannelMode(QProcess.SeparateChannels)
if cmd in {self.backends.ffmpeg, self.backends.ffprobe}:
args = '-hide_banner {}'.format(args)
if os.getenv('DEBUG', False) or getattr(self.parent, 'verboseLogs', False):
self.logger.info('{0} {1}'.format(cmd, args if args is not None else ''))
self.proc.setWorkingDirectory(workdir if workdir is not None else VideoService.getAppPath())
self.proc.start(cmd, shlex.split(args))
self.proc.readyReadStandardOutput.connect(
partial(self.cmdOut, self.proc.readAllStandardOutput().data().decode().strip()))
self.proc.waitForFinished(-1)
if cmd == self.backends.mediainfo or not mergechannels:
self.proc.setProcessChannelMode(QProcess.MergedChannels)
if output:
cmdoutput = self.proc.readAllStandardOutput().data().decode().strip()
if getattr(self.parent, 'verboseLogs', False) and not suppresslog:
self.logger.info('cmd output: {}'.format(cmdoutput))
return cmdoutput
return self.proc.exitStatus() == QProcess.NormalExit and self.proc.exitCode() == 0
return False
@pyqtSlot(str)
def cmdOut(self, output: str) -> None:
if len(output):
self.logger.info(output)
@pyqtSlot(QProcess.ProcessError)
def cmdError(self, error: QProcess.ProcessError) -> None:
if error != QProcess.Crashed:
QMessageBox.critical(self.parent, 'Error alert',
'<h4>{0} Error:</h4><p>{1}</p>'.format(self.backends.ffmpeg, self.proc.errorString()),
buttons=QMessageBox.Close)
# noinspection PyUnresolvedReferences, PyProtectedMember
@staticmethod
def getAppPath(path: str = None) -> str:
if VideoService.frozen and getattr(sys, '_MEIPASS', False):
app_path = sys._MEIPASS
else:
app_path = os.path.dirname(os.path.realpath(sys.argv[0]))
return app_path if path is None else os.path.join(app_path, path)