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生成抖音中的像素视频(视频转字符动画)

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生成抖音中的像素视频(视频转字符动画)以下还需要需要ffmpeg视频处理工具合成音频 安装ffmpeg |ffmpeg基本用法引用类pip3.7 install numpy opencv-python Pillow代码实现# -*- coding:utf-8 -*-import os, cv2, subprocess, argparsefrom PIL import Image, ImageFont, ImageDraw# pip3.7 install numpy opencv-python Pillow# 命令行输入参数处理parser = argparse.ArgumentParser()parser.add_argument('file')parser.add_argument('-o', '--output')parser.add_argument('-f', '--fps', type=float, default=24) # 帧parser.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.fileOUTPUT = args.outputFPS = args.fpsSAVE = args.save <!--more--># 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)]# 将视频拆分成图片def videoSplitJpg(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) # 将txt转换为图片 txtToImage(str(c) + '.jpg') r, frame = vc.read() c += 1 os.chdir('..') return vc# 将txt转换为图片(换为ascii图)def txtToImage(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]) or (6, 11) 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 dr.text((y, x), txt[i], fill=colors[i]) y += font_w name = file_name print(name + ' changed') im_txt.save(name)# 将图片合成视频def jpgToVideo(outfile_name, fps): fourcc = cv2.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()# 调用ffmpeg获取mp3音频文件def videoGetVoice(file_name, voice_file): # ffmpeg -i 'file_name' -vn -y -acodec copy 'voice_file' 获取视频中的音频文件 subprocess.call('ffmpeg -i ' + file_name + ' -vn -y -acodec copy ' + voice_file, shell=True)# 合成音频和视频文件def video_add_mp3(file_name, voice_file): outfile_name = file_name.split('.')[0] + '-txt.mp4' # ffmpeg -i 'file_name' -i 'voice_file' -strict -2 -f mp4 'outfile_name' 合并avi和aac音频生成mp4文件 subprocess.call('ffmpeg -i ' + file_name + ' -i ' + voice_file + ' -strict -2 -f mp4 ' + outfile_name, shell=True)# 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) returnif __name__ == '__main__': # 将视频拆分成图片 print('--------将视频拆分成图片------------------') vc = videoSplitJpg(INPUT) FPS = vc.get(cv2.CAP_PROP_FPS) # 获取帧率 vc.release() # 将图片合成视频 print('--------将图片合成视频------------------') jpgToVideo(INPUT.split('.')[0], FPS) # 音频文件名 voice_file = INPUT.split('.')[0] + '.aac' # 调用ffmpeg获取mp3音频文件 print('--------调用ffmpeg获取mp3音频文件------------------') videoGetVoice(INPUT, voice_file) # 合成音频和视频文件 print('--------合成音频和视频文件------------------') video_add_mp3(INPUT.split('.')[0] + '.avi', voice_file) if (not SAVE): print('--------删除生成的音频视频文件,和cache文件------------------') remove_dir("Cache") os.remove(voice_file) os.remove(INPUT.split('.')[0] + '.avi') print('--------删除成功------------------')

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2018/12