caching_demo.py

import os
import google.generativeai as genai
from google.generativeai import caching
import datetime
import time

genai.configure(api_key=os.environ['GOOGLEAI_API_KEY'])

# Download video file
# curl -O https://storage.googleapis.com/generativeai-downloads/data/Sherlock_Jr_FullMovie.mp4

path_to_video_file = '... replace with filename ...'

# Upload the video using the Files API
video_file = genai.upload_file(path=path_to_video_file)

# Wait for the file to finish processing
while video_file.state.name == 'PROCESSING':
    print('Waiting for video to be processed.')
    time.sleep(2)
    video_file = genai.get_file(video_file.name)

print(f'Video processing complete: {video_file.uri}')

# Create a cache with a 5 minute TTL
cache = caching.CachedContent.create(
    model='models/gemini-1.5-flash-001',
    display_name='sherlock jr movie',  # used to identify the cache
    system_instruction=(
        'You are an expert video analyzer, and your job is to answer '
        'the user\'s query based on the video file you have access to.'
    ),
    contents=[video_file],
    ttl=datetime.timedelta(minutes=5),
)

# Construct a GenerativeModel which uses the created cache.
model = genai.GenerativeModel.from_cached_content(cached_content=cache)

# Query the model
response = model.generate_content([(
    'Introduce different characters in the movie by describing '
    'their personality, looks, and names. Also list the timestamps '
    'they were introduced for the first time.')])

print(response.usage_metadata)

# The output should look something like this:
#
# prompt_token_count: 696219
# cached_content_token_count: 696190
# candidates_token_count: 214
# total_token_count: 696433

print(response.text)