ai-spokesgirl/openshot_word.py

import openshot
import os
import re
import time
import pysrt
import shutil
from PIL import Image,ImageDraw,ImageFont

def cKey(r,g,b,fuzz):
    col=openshot.Color()
    col.red=openshot.Keyframe(r)
    col.green=openshot.Keyframe(g)
    col.blue=openshot.Keyframe(b)
    return openshot.ChromaKey(col, openshot.Keyframe(fuzz))

def video_writer_init(path):
    w = openshot.FFmpegWriter(path)
    w.SetAudioOptions(True, "aac", 44100, 2, openshot.LAYOUT_STEREO, 3000000)
    w.SetVideoOptions(True, "libx264", openshot.Fraction(30000, 1000), 1280, 720,
        openshot.Fraction(1, 1), False, False, 3000000)
    return w

def video_photo_clip(video=None,layer=None, position=None, end=None
    ,scale_x=1,scale_y=1,location_x=0,location_y=0,ck=None,audio=True):
    clip = openshot.Clip(video)
    clip.Layer(layer)
    clip.Position(position)
    clip.End(end)
    clip.scale_x=openshot.Keyframe(scale_x)
    clip.scale_y=openshot.Keyframe(scale_y)
    clip.location_x=openshot.Keyframe(location_x)
    clip.location_y=openshot.Keyframe(location_y)
    
    if ck!=None:
        clip.AddEffect(ck)
    if audio==True:
        clip.has_audio=openshot.Keyframe(1)
    else:
        clip.has_audio=openshot.Keyframe(0)
    return clip

def trim_punctuation(s):
    pat_block = u'[^\u4e00-\u9fff0-9a-zA-Z]+'
    pattern = u'([0-9]+{0}[0-9]+)|{0}'.format(pat_block)
    res = re.sub(pattern, lambda x: x.group(1) if x.group(1) else u" " ,s)
    return res

#文字轉圖片
def txt2image(content, save_target,lang='zh',size=26,fon="font/DFT_B7.ttc"):
    unicode_text = trim_punctuation(content)
    font = ''
    if lang=='zh':
        font = ImageFont.truetype(font=fon, size=size)
    else :
        font = ImageFont.truetype(font="font/arial.ttf", size=size)
    
    W, H = (1280,500)
    canvas = Image.new('RGB', (W, H), "#00FF00")
    draw = ImageDraw.Draw(canvas)
    
    text= content
    if "\n" in text:
        w, h = draw.textsize(text.split("\n")[0],font = font)
        #draw.text(((W-w)/2,0), text[0:18],'black', font)
        text_border(draw,(W-w)/2,0,text.split("\n")[0],font,'black','white')
        w, h = draw.textsize(text.split("\n")[1],font = font)
        #draw.text(((W-w)/2,h+2), text[18:],'black', font)
        text_border(draw,(W-w)/2,h+2,text.split("\n")[1],font,'black','white')
    else:
        w, h = draw.textsize(content,font = font)
        #draw.text(((W-w)/2,0), text,'black', font)
        text_border(draw,(W-w)/2,0,text,font,'black','white')
    canvas.save(save_target, "PNG")

def text_border(draw,x,y,text,font,shadowcolor,fillcolor):
    draw.text((x-1, y), text, font=font, fill=shadowcolor)
    draw.text((x+1, y), text, font=font, fill=shadowcolor)
    draw.text((x, y-1), text, font=font, fill=shadowcolor)
    draw.text((x, y+1), text, font=font, fill=shadowcolor)

    draw.text((x-1, y+1), text, font=font, fill=shadowcolor)
    draw.text((x+1, y-1), text, font=font, fill=shadowcolor)
    draw.text((x-1, y-1), text, font=font, fill=shadowcolor)
    draw.text((x+1, y+1), text, font=font, fill=shadowcolor)
    # thicker border
    draw.text((x-2, y-2), text, font=font, fill=shadowcolor)
    draw.text((x+2, y-2), text, font=font, fill=shadowcolor)
    draw.text((x-2, y+2), text, font=font, fill=shadowcolor)
    draw.text((x+2, y+2), text, font=font, fill=shadowcolor)

    # now draw the text over it
    draw.text((x, y), text, font=font, fill=fillcolor)

def text_to_short_vedio(mp4_file = "input/example/test3.mp4",sound_file = None
                        ,vedio_time = 30,output_filename="output/demo.mp4",text_font = "font/DFT_B7.ttc"):
    t = openshot.Timeline(1280, 720, openshot.Fraction(30000, 1000), 44100, 2, openshot.LAYOUT_STEREO)
    t.Open()
    
    # 去背參數
    ck = cKey(0, 254, 0, 270)
    ck_anchor = cKey(0, 255, 0, 320)

    anchor = openshot.FFmpegReader(mp4_file)
    anchor.Open()
    anchor_clip = video_photo_clip(video=anchor,layer=2,scale_x=1,scale_y=1,
            location_x=0,location_y=0,position=0, end=vedio_time,audio=True)
    t.AddClip(anchor_clip)
    anchor.Close()
    number = 0

    sound_srt_file = ""
    #音檔自動產生srt(逐字稿)
    if ".srt" in sound_file:
        sound_srt_file = sound_file
    elif not sound_file is None:
        cmd = "autosub -S zh-TW -D zh-TW " + sound_file
        os.system(cmd)
        sound_srt_file = sound_file.split('.')[0] + ".srt"
    

    #開啟srt檔
    try:
        subs = pysrt.open(sound_srt_file)
        text_form = []
        for context in subs:
            #print(context.start.minutes*60+context.start.seconds+ 0.001*context.start.milliseconds)
            end = context.end-context.start
            end_timeStamp=(end.minutes*60+end.seconds+ 0.001*end.milliseconds)
            start_timeStamp=(context.start.minutes*60+context.start.seconds+ 0.001*context.start.milliseconds)
            text_form.append({'text':context.text,'start':start_timeStamp,'end':end_timeStamp,'size':36,'font':text_font})

        for text_tmp in text_form:
            file_name = "tmp/save_target_" + str(number) + ".png"
            txt2image(text_tmp['text'], file_name,lang='zh',size = text_tmp['size'],fon = text_tmp['font'])
            exec('text_anchor_{} = openshot.QtImageReader("tmp/save_target_{}.png")'.format(number,number))
            exec('text_anchor_{}.Open()'.format(number))
            exec('text_anchor_{}.Open()'.format(number))
            exec('text_anchor_clip_{} = video_photo_clip(video=text_anchor_{},layer=4,scale_x=1,scale_y=1,\
                    location_x=0,location_y=0.67,position=text_tmp["start"], end=text_tmp["end"],ck=ck_anchor,audio=True)'.format(number,number))
            exec('t.AddClip(text_anchor_clip_{})'.format(number))
            exec('text_anchor_{}.Close()'.format(number))
            number = number+1
    except:
        print("無法開啟srt檔案(字幕產生失敗)")

    w = video_writer_init(output_filename)
    w.Open()

    frames = int(t.info.fps)*int(vedio_time)
    for n in range(frames):
        f=t.GetFrame(n)
        w.WriteFrame(f)

    t.Close()
    w.Close()

    #刪除暫存檔案
    shutil.rmtree('tmp')
    os.mkdir('tmp')


if __name__ == '__main__':
    
    text_to_short_vedio(mp4_file = "input/導盲犬影片.mp4",sound_file ='input/導盲犬影片.srt',vedio_time =284,text_font ="font/DFT_R7.ttc")