itag ITAG The itag for the desired stream version show program's version number and exit h, -help show this help message and exit ] Ĭommand line application to download youtube videos. The complete set of flags are: usage: pytube3 To view available streams: $ pytube3 =9bZkp7q19f0 -list Let's start with downloading: $ pytube3 =9bZkp7q19f0 -itag = 18 Pytube3 ships with a simple CLI interface for downloading videos, playlists, and captions. register_on_progress_callback ( show_progress_bar ) Command-line interface Similarly, if your application requires on-download progress logic, pytube exposes a callback for this as well: > def show_progress_bar ( stream, chunk, file_handler, bytes_remaining ): return # do work > yt. register_on_complete_callback ( convert_to_aac ) If your application requires post-processing logic, pytube allows you to specify an "on download complete" callback function: > def convert_to_aac ( stream, file_handler ): return # do work > yt. Note: Using order_by on a given attribute will filter out all streams missing that attribute. If you need to optimize for a specific feature, such as the "highest resolution" or "lowest average bitrate": > yt. You also have an interface to select streams by their itag, without needing to filter: > yt. filter ( subtype = 'mp4', progressive = True ) > # this can also be expressed as: > yt. Multiple filters can also be specified: > yt. Pytube allows you to filter on every property available (see the documentation for the complete list), let's take a look at some of the most useful ones. This will download the highest progressive stream available (generally 720p) from the given playlist. You can also download a complete Youtube playlist: > from pytube import Playlist > playlist = Playlist ( "" ) > for video in playlist : > video. filter ( progressive = True ) Ĭonversely, if you only want to see the DASH streams (also referred to as "adaptive") you can do: > yt. To only view these progressive download streams: > yt. The legacy streams that contain the audio and video in a single file (referred to as "progressive download") are still available, but only for resolutions 720p and below. In the context of pytube, the implications are for the highest quality streams you now need to download both the audio and video tracks and then post-process them with software like FFmpeg to merge them. You may notice that some streams listed have both a video codec and audio codec, while others have just video or just audio, this is a result of YouTube supporting a streaming technique called Dynamic Adaptive Streaming over HTTP (DASH). Next, let's explore how we would view what video streams are available: > yt = YouTube ( '' ) > print ( yt. This example will download the highest quality progressive download stream available. Let's begin with showing how easy it is to download a video with pytube: > from pytube import YouTube > YouTube ( '' ). Easily Register on_download_progress & on_download_complete callbacks.Support for downloading complete playlist.Support for Both Progressive & DASH Streams.download ()Ī GUI frontend for pytube3 is available at YouTubeDownload Features filter ( progressive = True, file_extension = 'mp4' ). (Mac/homebrew users may need to use pip3) Quick start > from pytube import YouTube > YouTube ( '' ).
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