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這篇文章主要介紹了使用python怎么將視頻轉(zhuǎn)換為全字符視頻,億速云小編覺得不錯(cuò),現(xiàn)在分享給大家,也給大家做個(gè)參考,一起跟隨億速云小編來看看吧!
Python主要應(yīng)用于:1、Web開發(fā);2、數(shù)據(jù)科學(xué)研究;3、網(wǎng)絡(luò)爬蟲;4、嵌入式應(yīng)用開發(fā);5、游戲開發(fā);6、桌面應(yīng)用開發(fā)。
代碼:
#-*- coding:utf-8 -*- import argparse import os import cv2 import subprocess from cv2 import VideoWriter,VideoWriter_fourcc,imread,resize from PIL import Image, ImageFont, ImageDraw #命令行輸入?yún)?shù)處理 parser = argparse.ArgumentParser() parser.add_argument('file') parser.add_argument('-o','--output') parser.add_argument('-f','--fps',type = float, default = 24)#幀 parser.add_argument('-s','--save',type = bool, nargs='?', default = False, const = True) #是否保留Cache文件,默認(rèn)不保存 #獲取參數(shù) args = parser.parse_args() INPUT = args.file OUTPUT = args.output SAVE = args.save FPS = args.fps #像素對(duì)應(yīng)ascii碼 ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:oa+>!:+. ") #ascii_char = list("MNHQ$OC67+>!:-. ") #ascii_char = list("MNHQ$OC67)oa+>!:+. ") #將像素轉(zhuǎn)換為ascii碼 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)] #將txt轉(zhuǎn)換為圖片 def txt2image(file_name): im = Image.open(file_name).convert('RGB') #gif拆分后的圖像,需要轉(zhuǎn)換,否則報(bào)錯(cuò),由于gif分割后保存的是索引顏色 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","漢儀楷體簡(jiǎn).ttf"),18) font=ImageFont.load_default().font x=y=0 #獲取字體的寬高 font_w,font_h=font.getsize(txt[1]) font_h *= 1.37 #調(diào)整后更佳 #ImageDraw為每個(gè)ascii碼進(jìn)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],font = font, fill = colors[i]) y+=font_w name = file_name print(name+' changed') im_txt.save(name) #將視頻拆分成圖片 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')#同時(shí)轉(zhuǎn)換為ascii圖 r,frame = vc.read() c += 1 os.chdir('..') return vc #將圖片合成視頻 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() #遞歸刪除目錄 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 #調(diào)用ffmpeg獲取mp3音頻文件 def video2mp3(file_name): outfile_name = file_name.split('.')[0]+'.mp3' subprocess.call('ffmpeg -i '+file_name+' -f mp3 '+outfile_name,shell = True) #合成音頻和視頻文件 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__': vc = video2txt_jpg(INPUT) FPS = vc.get(cv2.CAP_PROP_FPS)#獲取幀率 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')
流程圖
這次python編程的流程圖如下:
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