python 播放 yuv

mp4 to yuv

ffmpeg -i video1.mp4 video1.yuv 

使用python直接播放yuv

import cv2
import numpy as np


def play_yuv(file_path, width, height):
    yuv_file = open(file_path, 'rb')
    frame_size = int(width * height * 3 / 2)
    while True:
        frame_data = yuv_file.read(frame_size)
        if not frame_data:
            break
        yuv_image = np.frombuffer(frame_data, dtype=np.uint8)
        yuv_image = yuv_image.reshape((height * 3 // 2, width))
        y = yuv_image[:height, :]
        u = yuv_image[height:height + height // 4, :]
        v = yuv_image[height + height // 4:, :]
        bgr_image = cv2.cvtColor(yuv_image, cv2.COLOR_YUV2BGR_I420)
        cv2.imshow('YUV Player', bgr_image)
        cv2.waitKey(30)
    yuv_file.close()
    cv2.destroyAllWindows()


if __name__ == '__main__':
    play_yuv('/Users/jimogangdan/Downloads/video1.yuv', 1920, 1080)

ffplay 播放 yuv

ffplay -f rawvideo -pixel_format yuv420p -video_size 1920x1080 video1.yuv 

vlc 可以直接播放 h264 文件