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from pytube import YouTube | |
from scipy.signal import resample | |
from firebase_admin import firestore | |
def log_firestore(db, local_id="000000", action="test", url=""): | |
data = { | |
"local_id": local_id, | |
"timestamp": firestore.SERVER_TIMESTAMP, | |
"action": action, | |
"url": url | |
} | |
doc_ref = db.collection("exp.1").document() | |
doc_ref.set(data) | |
def get_youtube(video_url, local_id, db): | |
# YouTubeの動画をダウンロード | |
log_firestore(db, local_id=str(local_id), action='DV', url=str(video_url)) | |
print("Start download video") | |
yt = YouTube(video_url) | |
abs_video_path = yt.streams.filter(progressive=True, file_extension='mp4').order_by('resolution').desc().first().download(filename='download.mp4', output_path='movies/') | |
print("Success download video") | |
print(abs_video_path) | |
return abs_video_path | |
def two_chnnel_to_one_channel(sample): | |
# 音声を2チャンネルから1チャンネルに変換 | |
left_channel = sample[:, 0] | |
right_channel = sample[:, 1] | |
mono_sample = (left_channel + right_channel) / 2 | |
return mono_sample | |
def convert_sample_rate(data, original_sr, target_sr): | |
# 音声データのサンプリング周波数を変更 | |
target_length = int(len(data) * target_sr / original_sr) | |
return resample(data, target_length) |