本文实例为大家分享了python如何实现视频转代码视频的具体代码，供大家参考，具体内容如下
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# -*- coding:utf-8 -*-#coding:utf-8import argparseimport osimport cv2import subprocessfrom cv2 import videowriter, videowriter_fourcc, imread, resizefrom pil import image, imagefont, imagedraw # 命令行输入参数处理# aparser = argparse.argumentparser()# aparser.add_argument('file')# aparser.add_argument('-o','--output')# aparser.add_argument('-f','--fps',type = float, default = 24)#帧# aparser.add_argument('-s','--save',type = bool, nargs='?', default = false, const = true)# 是否保留cache文件，默认不保存 # 获取参数# args = parser.parse_args()# input = args.file# output = args.output# save = args.save# fps = args.fps# 像素对应ascii码 ascii_char = list("$@b%8&wm#*oahkbdpqwmzo0qlcjuyxzcvunxrjft/\|()1{}[]?-_+~<>i!li;:oa+>!:+. ") # ascii_char = list("mnhq$oc67+>!:-. ")# ascii_char = list("mnhq$oc67)oa+>!:+. ") # 将像素转换为ascii码def get_char(r, g, b, alpha=256): if alpha == 0: return '' length = len(ascii_char) gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b) unit = (256.0 + 1) / length return ascii_char[int(gray / unit)] # 将txt转换为图片def txt2image(file_name): im = image.open(file_name).convert('rgb') # gif拆分后的图像，需要转换，否则报错，由于gif分割后保存的是索引颜色 raw_width = im.width raw_height = im.height width = int(raw_width / 6) height = int(raw_height / 15) im = im.resize((width, height), image.nearest) txt = "" colors = [] for i in range(height): for j in range(width): pixel = im.getpixel((j, i)) colors.append((pixel[0], pixel[1], pixel[2])) if (len(pixel) == 4): txt += get_char(pixel[0], pixel[1], pixel[2], pixel[3]) else: txt += get_char(pixel[0], pixel[1], pixel[2]) txt += '\n' colors.append((255, 255, 255)) im_txt = image.new("rgb", (raw_width, raw_height), (255, 255, 255)) dr = imagedraw.draw(im_txt) # font = imagefont.truetype(os.path.join("fonts","汉仪楷体简.ttf"),18) font = imagefont.load_default().font x = y = 0 # 获取字体的宽高 font_w, font_h = font.getsize(txt[1]) font_h *= 1.37 # 调整后更佳 # imagedraw为每个ascii码进行上色 for i in range(len(txt)): if (txt[i] == '\n'): x += font_h y = -font_w # self, xy, text, fill = none, font = none, anchor = none, #*args, ** kwargs dr.text((y, x), txt[i], fill=colors[i]) #dr.text((y, x), txt[i], font=font, fill=colors[i]) y += font_w name = file_name #print(name + ' changed') im_txt.save(name) # 将视频拆分成图片def video2txt_jpg(file_name): vc = cv2.videocapture(file_name) c = 1 if vc.isopened(): r, frame = vc.read() if not os.path.exists('cache'): os.mkdir('cache') os.chdir('cache') else: r = false while r: cv2.imwrite(str(c) + '.jpg', frame) txt2image(str(c) + '.jpg') # 同时转换为ascii图 r, frame = vc.read() c += 1 os.chdir('..') return vc # 将图片合成视频def jpg2video(outfile_name, fps): fourcc = videowriter_fourcc(*"mjpg") images = os.listdir('cache') im = image.open('cache/' + images[0]) vw = cv2.videowriter(outfile_name + '.avi', fourcc, fps, im.size) os.chdir('cache') for image in range(len(images)): # image.open(str(image)+'.jpg').convert("rgb").save(str(image)+'.jpg') frame = cv2.imread(str(image + 1) + '.jpg') vw.write(frame) #print(str(image + 1) + '.jpg' + ' finished') os.chdir('..') vw.release() # 递归删除目录def remove_dir(path): if os.path.exists(path): if os.path.isdir(path): dirs = os.listdir(path) for d in dirs: if os.path.isdir(path + '/' + d): remove_dir(path + '/' + d) elif os.path.isfile(path + '/' + d): os.remove(path + '/' + d) os.rmdir(path) return elif os.path.isfile(path): os.remove(path) return # 调用ffmpeg获取mp3音频文件def video2mp3(file_name): outfile_name = file_name.split('.')[0] + '.mp3' subprocess.call('ffmpeg -i ' + file_name + ' -f mp3 ' + outfile_name, shell=true) # 合成音频和视频文件def video_add_mp3(file_name, mp3_file): outfile_name = file_name.split('.')[0] + '-txt.mp4' subprocess.call('ffmpeg -i ' + file_name + ' -i ' + mp3_file + ' -strict -2 -f mp4 ' + outfile_name, shell=true) if __name__ == '__main__': input = r"g:\py\学习python\视频到代码\video39.mp4" output = r"g:\py\学习python\视频到代码\video39_2.mp4" save = r"g:\py\学习python\视频到代码\\video39_3" fps = "24" vc = video2txt_jpg(input) fps = vc.get(cv2.cap_prop_fps) # 获取帧率 print(fps) vc.release() jpg2video(input.split('.')[0], fps) print(input, input.split('.')[0] + '.mp3') video2mp3(input) video_add_mp3(input.split('.')[0] + '.avi', input.split('.')[0] + '.mp3') if (not save): remove_dir("cache") os.remove(input.split('.')[0] + '.mp3') os.remove(input.split('.')[0] + '.avi') |
流程图：
这次python编程的流程图如下：
注意事项：
在编程的过程中有需要注意的几点：
- 这次编程使用到了opencv库，需要安装
- 帧率的获取可以通过这个函数——fps = vc.get(cv2.cap_prop_fps)
- 合成后的视频是没有声音的,我们使用ffmpeg进行合成
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/mp624183768/article/details/81161260
