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from PIL import Image
from PyQt5 import QtGui, QtCore, QtWidgets
import os
import math
import subprocess
import logging
from ..component import Component
from ..toolkit.frame import BlankFrame, scale
from ..toolkit.ffmpeg import openPipe, closePipe, testAudioStream, FfmpegVideo
from ..toolkit import checkOutput
log = logging.getLogger('AVP.Components.Video')
class Component(Component):
name = 'Video'
version = '1.0.0'
def widget(self, *args):
self.videoPath = ''
self.badAudio = False
self.x = 0
self.y = 0
self.loopVideo = False
super().widget(*args)
self._image = BlankFrame(self.width, self.height)
self.page.pushButton_video.clicked.connect(self.pickVideo)
self.trackWidgets({
'videoPath': self.page.lineEdit_video,
'loopVideo': self.page.checkBox_loop,
'useAudio': self.page.checkBox_useAudio,
'distort': self.page.checkBox_distort,
'scale': self.page.spinBox_scale,
'volume': self.page.spinBox_volume,
'xPosition': self.page.spinBox_x,
'yPosition': self.page.spinBox_y,
}, presetNames={
'videoPath': 'video',
'loopVideo': 'loop',
'xPosition': 'x',
'yPosition': 'y',
}, relativeWidgets=[
'xPosition', 'yPosition',
])
def update(self):
if self.page.checkBox_useAudio.isChecked():
self.page.label_volume.setEnabled(True)
self.page.spinBox_volume.setEnabled(True)
else:
self.page.label_volume.setEnabled(False)
self.page.spinBox_volume.setEnabled(False)
def previewRender(self):
self.updateChunksize()
frame = self.getPreviewFrame(self.width, self.height)
if not frame:
return BlankFrame(self.width, self.height)
else:
return frame
def properties(self):
props = []
if hasattr(self.parent, 'window'):
outputFile = self.parent.window.lineEdit_outputFile.text()
else:
outputFile = str(self.parent.args.output)
if not self.videoPath:
self.lockError("There is no video selected.")
elif not os.path.exists(self.videoPath):
self.lockError("The video selected does not exist!")
elif os.path.realpath(self.videoPath) == os.path.realpath(outputFile):
self.lockError("Input and output paths match.")
if self.useAudio:
props.append('audio')
if not testAudioStream(self.videoPath) \
and self.error() is None:
self.lockError(
"Could not identify an audio stream in this video.")
return props
def audio(self):
params = {}
if self.volume != 1.0:
params['volume'] = '=%s:replaygain_noclip=0' % str(self.volume)
return (self.videoPath, params)
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
self.updateChunksize()
self.video = FfmpegVideo(
inputPath=self.videoPath, filter_=self.makeFfmpegFilter(),
width=self.width, height=self.height, chunkSize=self.chunkSize,
frameRate=int(self.settings.value("outputFrameRate")),
parent=self.parent, loopVideo=self.loopVideo,
component=self
) if os.path.exists(self.videoPath) else None
def frameRender(self, frameNo):
if FfmpegVideo.threadError is not None:
raise FfmpegVideo.threadError
return self.finalizeFrame(self.video.frame(frameNo))
def postFrameRender(self):
closePipe(self.video.pipe)
def pickVideo(self):
imgDir = self.settings.value("componentDir", os.path.expanduser("~"))
filename, _ = QtWidgets.QFileDialog.getOpenFileName(
self.page, "Choose Video",
imgDir, "Video Files (%s)" % " ".join(self.core.videoFormats)
)
if filename:
self.settings.setValue("componentDir", os.path.dirname(filename))
self.mergeUndo = False
self.page.lineEdit_video.setText(filename)
self.mergeUndo = True
def getPreviewFrame(self, width, height):
if not self.videoPath or not os.path.exists(self.videoPath):
return
command = [
self.core.FFMPEG_BIN,
'-thread_queue_size', '512',
'-i', self.videoPath,
'-f', 'image2pipe',
'-pix_fmt', 'rgba',
]
command.extend(self.makeFfmpegFilter())
command.extend([
'-codec:v', 'rawvideo', '-',
'-ss', '90',
'-frames:v', '1',
])
if self.core.logEnabled:
logFilename = os.path.join(
self.core.logDir, 'preview_%s.log' % str(self.compPos))
log.debug('Creating ffmpeg process (log at %s)' % logFilename)
with open(logFilename, 'w') as logf:
logf.write(" ".join(command) + '\n\n')
with open(logFilename, 'a') as logf:
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=logf, bufsize=10**8
)
else:
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL, bufsize=10**8
)
byteFrame = pipe.stdout.read(self.chunkSize)
closePipe(pipe)
frame = self.finalizeFrame(byteFrame)
return frame
def makeFfmpegFilter(self):
return [
'-filter_complex',
'[0:v] scale=%s:%s' % scale(
self.scale, self.width, self.height, str),
]
def updateChunksize(self):
if self.scale != 100 and not self.distort:
width, height = scale(self.scale, self.width, self.height, int)
else:
width, height = self.width, self.height
self.chunkSize = 4 * width * height
def command(self, arg):
if '=' in arg:
key, arg = arg.split('=', 1)
if key == 'path' and os.path.exists(arg):
if '*%s' % os.path.splitext(arg)[1] in self.core.videoFormats:
self.page.lineEdit_video.setText(arg)
self.page.spinBox_scale.setValue(100)
self.page.checkBox_loop.setChecked(True)
return
else:
print("Not a supported video format")
quit(1)
elif arg == 'audio':
if not self.page.lineEdit_video.text():
print("'audio' option must follow a video selection")
quit(1)
self.page.checkBox_useAudio.setChecked(True)
return
super().command(arg)
def commandHelp(self):
print('Load a video:\n path=/filepath/to/video.mp4')
print('Using audio:\n path=/filepath/to/video.mp4 audio')
def finalizeFrame(self, imageData):
try:
if self.distort:
image = Image.frombytes(
'RGBA',
(self.width, self.height),
imageData)
else:
image = Image.frombytes(
'RGBA',
scale(self.scale, self.width, self.height, int),
imageData)
self._image = image
except ValueError:
# use last good frame
image = self._image
if self.scale != 100 \
or self.xPosition != 0 or self.yPosition != 0:
frame = BlankFrame(self.width, self.height)
frame.paste(image, box=(self.xPosition, self.yPosition))
else:
frame = image
return frame
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