Python - 播放带音频的视频（使用 OpenCV？）

Question

这可能是一个愚蠢的问题，我搜索过这个但没有找到直接的答案：

您可以使用 OpenCV 和 FFMPEG 播放带音频的视频吗？

如果没有，最好的方法是什么？ 看起来很简单，但我对 Python 还很陌生，所以我不知道会发生什么/要搜索什么。

谢谢！

Answer 1

使用 ffpyplayer 处理音频部分。

import cv2
import numpy as np
#ffpyplayer for playing audio
from ffpyplayer.player import MediaPlayer
video_path="../L1/images/Godwin.mp4"
def PlayVideo(video_path):
    video=cv2.VideoCapture(video_path)
    player = MediaPlayer(video_path)
    while True:
        grabbed, frame=video.read()
        audio_frame, val = player.get_frame()
        if not grabbed:
            print("End of video")
            break
        if cv2.waitKey(28) & 0xFF == ord("q"):
            break
        cv2.imshow("Video", frame)
        if val != 'eof' and audio_frame is not None:
            #audio
            img, t = audio_frame
    video.release()
    cv2.destroyAllWindows()
PlayVideo(video_path)

示例代码将起作用，但您需要根据视频的速度播放 cv2.waitKey(28)。

Answer 2

如果音频不起作用，可以使用以下代码

#date: 22 May 2022

#reference: https://github.com/thedreamcode/python_basics/blob/master/read_video_audio.py

import cv2
import numpy as np
from ffpyplayer.player import MediaPlayer


def getVideoSource(source, width, height):
    cap = cv2.VideoCapture(source)
    cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
    cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)
    return cap


def running_videos(sourcePath):
   
    camera = getVideoSource(sourcePath, 720, 480)
    player = MediaPlayer(sourcePath)

    while True:
        ret, frame = camera.read()
        audio_frame, val = player.get_frame()

        if (ret == 0):
            print("End of video")
            break

        frame = cv2.resize(frame, (720, 480))
        cv2.imshow('Camera', frame)

        if cv2.waitKey(20) & 0xFF == ord('q'):
            break

        #if val != 'eof' and audio_frame is not None:
            #frame, t = audio_frame
            #print("Frame:" + str(frame) + " T: " + str(t))

    camera.release()
    cv2.destroyAllWindows()

if __name__ == "__main__":
    running_videos( r"copy_path_to_video_file_here")