I'm trying to:
- Use youtube-dl within a Python script to download videos periodically
- Organize/name the videos dynamically by youtube data i.e. %(title)s
- Extract audio/MP3 and move those files into a subdirectory named 'MP3'
I'm pretty new to Python, and I'm sure there are some messy, unnecessary bits of code; so, I'm open to clean-up advice too.
I have encountered an issue where, when I enter a playlist url (instead of an individual url) I'm just getting the playlist name instead of the individual title, uploader data I used to sort files. (And I don't know how or if I can just use the outmpl option/variable throughout the code)
I actually split the code into three pieces/modules.
The basic example of the problem is this - I enter:
outmpl: 'F:\\Videos\\Online Videos\\Comics\\%(uploader)s\\%(playlist)s\\%(playlist_index)s_%(title)s.%(ext)s'
Which would save the videos to:
'F:\\Videos\\Online Videos\\Comics\\Comicstorian\\Annhililation\\01_Annihilation Beginnings Drax Earthfall - Complete Story.mp4' - and so on (for the rest of the videos)
But, I don't know to pass the directory variables on to the module where I move the files.
Here is the code - the three modules/parts
PyFile_Download_Exmple.py
from __future__ import unicode_literals
import youtube_dl
import Move_MP3
import ytdl_variables
#Uses variables from ytdl_variables script and downloads the video
with youtube_dl.YoutubeDL(ytdl_variables.ydl_opts) as ydl:
ydl.download([ytdl_variables.video_url])
#Calls script to create folder and move MP3 files
Move_MP3
ytdl_variables.py
from __future__ import unicode_literals
import youtube_dl
global video_title, uploader, playlist, playlist_index, video_url, ydl_opts, ydl
video_url = 'https://www.youtube.com/playlist?list=PL6FhCd_HO_ACJzTiLKfETgzLc1an_t05i'
ydl_opts = {
'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
'outtmpl': 'F:\\Videos\\Online Videos\\Comics\\%(uploader)s\\%(playlist)s\\%(playlist_index)s_%(title)s.%(ext)s',
'postprocessors': [{
'key': 'FFmpegExtractAudio',
'preferredcodec': 'mp3',
'preferredquality': '192',
}],
'download_archive': 'F:\\Videos\\Online Videos\\Archive.txt',
}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
#The next part creates a variable that returns info when provided the video_url variable >> http://stackoverflow.com/questions/23727943/how-to-get-information-from-youtube-dl-in-python
'''
Code here should get take the youtube playlist and spit out
each url to move to the next step as vLinks variable, but
I haven't figured out how to pass (title) etc. variables from
each video in a playlist.
link = individual video url from playlist
The following puts actual info into variables for Python to use. These are made global above. I made a 'for' loop to repeat grabbing info for each video - but it doesn't work right now b/c I didn't define vLinks.
'''
for vLink in vLinks:
info_dict = ydl.extract_info(link, download=False)
video_title = info_dict.get('title', None)
playlist_index = info_dict.get('playlist_index', None)
playlist = info_dict.get('playlist', None)
uploader = info_dict.get('uploader', None)
print(video_title)
#Checks if the video is in a playlist; if it's not, 'NA' will be the string returned: http://stackoverflow.com/questions/23086383/how-to-test-nonetype-in-python
if playlist is None:
playlist = 'NA'
if playlist_index is None:
playlist_index = 'NA'
Move_MP3
from __future__ import unicode_literals
import ytdl_variables
import shutil
import os, os.path
#Sets variables for renaming the files
newfolder = 'F:\\Videos\\Online Videos\\Comics\\' + ytdl_variables.uploader + '\\' + ytdl_variables.playlist + '\\MP3\\'
oa_savedir = 'F:\\Videos\\Online Videos\\Comics\\' + ytdl_variables.uploader + '\\' + ytdl_variables.playlist + '\\' + ytdl_variables.playlist_index + '_' + ytdl_variables.video_title + '.mp3'
fa_savedir = 'F:\\Videos\\Online Videos\\Comics\\' + ytdl_variables.uploader + '\\' + ytdl_variables.playlist + '\\MP3\\' + ytdl_variables.playlist_index + '_' + ytdl_variables.video_title + '.mp3'
#Function that creates file directory before moving file there - changed from http://stackoverflow.com/questions/23793987/python-write-file-to-directory-doesnt-exist
def mkdir_p(path):
if not os.path.exists(path):
os.makedirs(path);
#Function that checks whether the file already exists where I want to move it >> http://stackabuse.com/python-check-if-a-file-or-directory-exists/
def chkfl_p(path):
if not os.path.isfile(path):
shutil.move(oa_savedir, fa_savedir);
#Calls function to look for \MP3 directory and creates directory if it doesn't exist
mkdir_p(newfolder)
#Calls function to look for file and moves file if it isn't already there
chkfl_p(fa_savedir)
I'm working on cleaning this up so more, but I discovered the answer in a section of another answer...
To get individual links from a playlist url:
ydl = youtube_dl.YoutubeDL({'outtmpl': '%(id)s%(ext)s', 'quiet':True,})
video = ""
with ydl:
result = ydl.extract_info \
(yt_url,
download=False) #We just want to extract the info
if 'entries' in result:
# Can be a playlist or a list of videos
video = result['entries']
#loops entries to grab each video_url
for i, item in enumerate(video):
video = result['entries'][i]
the youtube_dl.YoutubeDL seems to return JSON data from the YouTube API
yt_url is a variable for either a video or playlist.
If the returned data has "entries" it's a playlist - then I loop those each entry (enumerate entries with i(ndex)) -- from there I can do what I want with the urls or other info.
result['entries'][i]['webpage_url'] #url of video
result['entries'][i]['title'] #title of video
result['entries'][i]['uploader'] #username of uploader
result['entries'][i]['playlist'] #name of the playlist
result['entries'][i]['playlist_index'] #order number of video
来源：https://stackoverflow.com/questions/43910501/how-do-i-retrieve-individual-video-urls-from-a-playlist-using-youtube-dl-within