【Python】動画からGIFをつくるの続き。
GIF Maker - Video to GIF Creator Tools | GIPHY に少しでも近づけるようにテキストをつけられるようにした。

コード

追加したコード

from collections import namedtuple

from PIL import ImageDraw, ImageFont

# テキスト関連のデータまとめ用のタプル
Cc = namedtuple("Cc", [
    "start_index",
    "stop_index",
    "text",
    "font",
    "rgba",
    "point"
])


def make_cc(gif_fps, start_sec, stop_sec, text, font, rgba, point):
    start_index = start_sec * gif_fps
    stop_index = stop_sec * gif_fps
    return Cc(start_index, stop_index, text, font, rgba, point)


def add_text_to_image(im_list, cc_list):   
    new_im_list = []
    for index, im_obj in enumerate(im_list):
        new_im = None
        for cc in cc_list:
            if index >= cc.start_index and index <= cc.stop_index:
                if new_im is None:
                    new_im = add_text_to_image_object(im_obj, cc)
                else:
                    new_im = add_text_to_image_object(new_im, cc)
        
        if new_im is None:
            new_im_list.append(im_obj)
        else:
            new_im_list.append(new_im)
    
    return new_im_list


def add_text_to_image_object(im_obj, cc):
    base = im_obj.convert('RGBA')
    # make a blank image for the text, initialized to transparent text color
    text_img = Image.new('RGBA', base.size, (255,255,255,0))

    # get a drawing context
    d = ImageDraw.Draw(text_img)
    
    # draw text
    d.text(cc.point, cc.text, font=cc.font, fill=cc.rgba)

    out = Image.alpha_composite(base, text_img)
    return out

メイン処理

def main():
    """メイン処理"""
    video_file = "Wildlife.wmv"

    fps, count = get_fps_n_count(video_file)
    if fps is None:
        print("動画ファイルを開けませんでした")
        return

    # gifにしたい範囲を指定
    start_sec = 0
    stop_sec = 8

    start_frame = int(start_sec * fps)
    stop_frame = int(stop_sec * fps)
    step_frame = 3

    print("開始(けっこう時間がかかる)")
    im_list = get_frame_range(video_file, start_frame, stop_frame, step_frame)
    if im_list is None:
        print("動画ファイルを開けませんでした")
        return
    
    # テキスト関連の処理
    gif_fps = len(im_list) // (stop_sec - start_sec)
    font1 = ImageFont.truetype(font=r"C:\Windows\Fonts\meiryo.ttc", size=32)
    font2 = ImageFont.truetype(font=r"C:\Windows\Fonts\BAUHS93.TTF", size=32)
    cc1 = make_cc(gif_fps, 0, 2, "あいうえお", font1, (255, 0, 0, 255), (5, 5))
    cc2 = make_cc(gif_fps, 1, 3, "ABCDE", font2, (0, 255, 0, 255), (5, 50))
    cc3 = make_cc(gif_fps, 2, 4, "かきくけこ", font1, (0, 0, 255, 255), (5, 100))
    cc4 = make_cc(gif_fps, 3, 5, "FGHIJ", font2, (255, 255, 255, 255), (5, 150))
    new_im_list = add_text_to_image(im_list, [cc1, cc2, cc3, cc4])

    make_gif('どうぶつ2.gif', new_im_list)
    print("終了")

出来たGIF

参考

おわり