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ultralytics 8.2.23 New YouTube Shorts inference (#13150)

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Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: Erfan Zekri Esfahani <40582518+eze1376@users.noreply.github.com>
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Glenn Jocher 2024-05-27 22:35:45 +02:00 • committed by GitHub
parent c371c953d5
commit 22de23ec8d
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7 changed files with 34 additions and 22 deletions
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31
ultralytics/data/loaders.py
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@ -325,7 +325,7 @@ class LoadImagesAndVideos:
paths, imgs, info = [], [], []
while len(imgs) < self.bs:
if self.count >= self.nf: # end of file list
if len(imgs) > 0:
if imgs:
return paths, imgs, info # return last partial batch
else:
raise StopIteration
@ -522,26 +522,43 @@ def autocast_list(source):
return files
def get_best_youtube_url(url, use_pafy=True):
def get_best_youtube_url(url, method="pytube"):
"""
Retrieves the URL of the best quality MP4 video stream from a given YouTube video.
This function uses the pafy or yt_dlp library to extract the video info from YouTube. It then finds the highest
quality MP4 format that has video codec but no audio codec, and returns the URL of this video stream.
This function uses the specified method to extract the video info from YouTube. It supports the following methods:
- "pytube": Uses the pytube library to fetch the video streams.
- "pafy": Uses the pafy library to fetch the video streams.
- "yt-dlp": Uses the yt-dlp library to fetch the video streams.
The function then finds the highest quality MP4 format that has a video codec but no audio codec, and returns the
URL of this video stream.
Args:
url (str): The URL of the YouTube video.
use_pafy (bool): Use the pafy package, default=True, otherwise use yt_dlp package.
method (str): The method to use for extracting video info. Default is "pytube". Other options are "pafy" and
"yt-dlp".
Returns:
(str): The URL of the best quality MP4 video stream, or None if no suitable stream is found.
"""
if use_pafy:
if method == "pytube":
check_requirements("pytube")
from pytube import YouTube
streams = YouTube(url).streams.filter(file_extension="mp4", only_video=True)
streams = sorted(streams, key=lambda s: s.resolution, reverse=True) # sort streams by resolution
for stream in streams:
if stream.resolution and int(stream.resolution[:-1]) >= 1080: # check if resolution is at least 1080p
return stream.url
elif method == "pafy":
check_requirements(("pafy", "youtube_dl==2020.12.2"))
import pafy # noqa
return pafy.new(url).getbestvideo(preftype="mp4").url
else:
elif method == "yt-dlp":
check_requirements("yt-dlp")
import yt_dlp