subtitle_video_snippet.py

from moviepy.editor import *
from moviepy.video.tools.subtitles import SubtitlesClip

audio_path  = "/path/to/audio/05022357-a41f-11e7-b42c-f45c89a1211f.mp4"
srt_path = "path/to/srt/06665ef8-a41f-11e7-b3eb-f45c89a1211f.srt"
image_path = '/path/to/image/DSC_0265.JPG'

#generate srt
generator = lambda txt: TextClip(txt, font='Arial', fontsize=16, color='white')
subtitles = SubtitlesClip(srt_path, generator)

# create static image with 30 sec video
clip = ImageClip(image_path)
clip = clip.set_duration(30)

#combine video and subtitle
video = mp.CompositeVideoClip([clip, subtitles.set_pos(('center','bottom'))])

#write to output
# increasing fps reduces the speed of building video
video.write_videofile("output.mp4", audio=audio_path, fps=5, codec='libx264')