util_car.py 文件源码

def animation2HTML(anim, frame_rate):
    print("animaiton to video...")
    if not hasattr(anim, '_encoded_video'):
        with NamedTemporaryFile(suffix='.mp4') as f:
            anim.save(f.name, fps=frame_rate,
                      extra_args=['-vcodec', 'libx264',
                                  '-pix_fmt', 'yuv420p',
                                  '-crf', '28',
                                  '-preset', 'veryfast'])

            video = io.open(f.name, 'r+b').read()
            encoded = base64.b64encode(video)
            return HTML(data='''<video alt="test" controls>
                            <source src="data:video/mp4;base64,{0}" type="video/mp4" />
                         </video>'''.format(encoded.decode('ascii')))