我有一些代码:
使用pyqt5音频输入从麦克风录制
使用pydub AudioSegment写入文件record.mp3
使用以下代码预览record.mp3:
def preview_record(self,ui): filename = self.record_path #filename = filename.replace(" ","+") url = QtCore.QUrl.fromLocalFile(r""+filename) content = QtMultimedia.QMediaContent(url) self.player = QtMultimedia.QMediaPlayer() self.player.setMedia(content) self.player.play()
问题是,如果预览录制的文件,然后录制新文件,则在步骤2中):
PermissionError: [Errno 13] Permission denied: '../disket box/weather news/record.mp3'
这是因为资源是为预览而打开的。 如何释放资源以解决问题
编辑:重现问题的示例:
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
from PyQt5.QtCore import QDate, QTime,QTimer, QDateTime, Qt
from pydub import AudioSegment
from datetime import datetime
import vlc
import ctypes
import os
from pathlib import Path
import shutil
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
import time
import moviepy.editor
import moviepy.video.fx.all as vfx
from pydub import AudioSegment
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(400, 300)
self.record = QtWidgets.QPushButton(Form)
self.record.setGeometry(QtCore.QRect(110, 30, 161, 61))
self.record.setObjectName("record")
self.stop = QtWidgets.QPushButton(Form)
self.stop.setGeometry(QtCore.QRect(110, 140, 161, 61))
self.stop.setObjectName("stop")
self.preview = QtWidgets.QPushButton(Form)
self.preview.setGeometry(QtCore.QRect(120, 250, 151, 81))
self.preview.setObjectName("preview")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
self.destinationFile = QtCore.QFile()
self.record.clicked.connect(lambda state:self.start_recording())
self.stop.clicked.connect(lambda state:self.stop_recording())
self.preview.clicked.connect(lambda state:self.preview_record())
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "StackOverflow example"))
self.record.setText(_translate("Form", "Record"))
self.stop.setText(_translate("Form", "Stop"))
self.preview.setText(_translate("Form", "Preview"))
def start_recording(self):
self.destinationFile.setFileName("record.raw")
self.destinationFile.open( QtCore.QIODevice.ReadWrite | QtCore.QIODevice.Truncate )
info = QtMultimedia.QAudioDeviceInfo.defaultInputDevice()
format = QtMultimedia.QAudioFormat()
format.setSampleRate(44100);
format.setChannelCount(1);
format.setSampleSize(16);
format.setCodec("audio/pcm");
format.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian)
format.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
input_devices = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioInput)
if (info.isFormatSupported(format) is not True):
format = info.nearestFormat(format)
print("format changed")
self.audio = QtMultimedia.QAudioInput(input_devices[0],format)
self.audio.start(self.destinationFile)
def stop_recording(self):
self.audio.stop()
self.destinationFile.close()
raw_audio = AudioSegment.from_file("record.raw", format="raw",frame_rate=44100, channels=1, sample_width=2)
raw_audio.export("record.mp3", format="mp3")
self.record_path = os.path.abspath("record.mp3")
def preview_record(self):
filename = self.record_path
url = QtCore.QUrl.fromLocalFile(r""+filename)
content = QtMultimedia.QMediaContent(url)
self.player = QtMultimedia.QMediaPlayer()
self.player.setMedia(content)
self.player.play()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
app.addLibraryPath(r"C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/lib/site-packages/PyQt5/Qt/plugins")
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.showMaximized()
sys.exit(app.exec_())
要复制它,请执行以下步骤:
错误是:
Traceback (most recent call last):
File "stack_record.py", line 36, in <lambda>
self.stop.clicked.connect(lambda state:self.stop_recording())
File "stack_record.py", line 75, in stop_recording
raw_audio.export("record.mp3", format="mp3")
File "C:\Users\╫±▐≤ΪΎ≥\AppData\Local\Programs\Python\Python38\lib\site-packages\pydub\audio_segment.py", line 809, in export
out_f, _ = _fd_or_path_or_tempfile(out_f, 'wb+')
File "C:\Users\╫±▐≤ΪΎ≥\AppData\Local\Programs\Python\Python38\lib\site-packages\pydub\utils.py", line 60, in _fd_or_path_or_tempfile
fd = open(fd, mode=mode)
PermissionError: [Errno 13] Permission denied: 'record.mp3'
self.player.stateChanged.connect(lambda state:self.mediastate_changed(state,ui))
def mediastate_changed(self, state,ui): if self.player.state() != QtMultimedia.QMediaPlayer.PlayingState: del self.player
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