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• How can I download videos from reddit using praw

  9 octobre 2023, par rabbibillclinton

  So I want to download videos from reddit, I've seen projects on github but I'm very new to python and don't know how it works, if someone could explain I'd appreciate it, I found this project It works but it seperates audio and video and I want it all in one, I think you can combine those using ffmpeg but I don't know how that works either, also how do I configure some of this stuff like where the videos save and quality, here's my code.

  


  from redvid import Downloader
import praw

reddit = praw.Reddit(client_id = "a", client_secret = "b", user_agent = "c")

subreddit = reddit.subreddit("learnpython")
hot = subreddit.hot(limit=5)

downloader = Downloader(max_q=True)

for submission in hot:
    downloader.url = submission.url
    reddit.download()


  


• Raising and Rescuing Custom Exception

  24 décembre 2013, par cmw

  I'm using Rails 3 with Carrierwave and FFMPEG to handle video uploads and encoding.

  In my uploader, I'm using FFMPEG to grab the duration of the video from cache before storing it.

  I'd like to raise a custom exception if the video's duration exceeds a specific length and then route the user accordingly. I've spent quite a bit of time trying to figure out how to create, raise and rescue my own custom exceptions in Rails – but, I've had no luck.

  Some posts I've used to try to piece this together include this stack overflow post and this article on customized exception handling in Rails 3. I've had no luck yet.

  I'm hoping someone can offer guidance on the proper approach to this. My mind is blown.

  Below is what my uploader looks like :

  class VideoUploader < CarrierWave::Uploader::Base
  
  
  
    before :store, :ffmpeg
  
  
  
    # Set storage type
  
    storage :fog
  
  
  
    # Override the directory where uploaded files will be stored.
  
    def store_dir
  
      "#{model.class.to_s.underscore}/videos/#{model.id}"
  
    end
  
  
  
    # Add a white list of extensions which are allowed to be uploaded.
  
    def extension_white_list
  
      %w(mov avi mp4 mkv wmv mpg)
  
    end
  
  
  
    def full_cache_path
  
      "#{::Rails.root}/public/#{cache_dir}/#{cache_name}"
  
    end
  
  
  
    private 
  
  
  
    def ffmpeg(*args)
  
      @model.video.cache_stored_file!
  
      movie = FFMPEG::Movie.new("#{model.video.full_cache_path}")
  
      if movie.duration > 600
  
        raise "my custom exception will go here one day"
  
      end
  
    end
  
  
  
  end

• How to rename the .wav file which is going to download using the below program ?

  29 avril 2020, par Y V Sravan Kumar Reddy

  from __future__ import unicode_literals
import youtube_dl

ydl_opts = {
    'format': 'bestaudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'wav',
        'preferredquality': '192'
    }],
    'postprocessor_args': [
        '-ar', '16000'
    ],
    'prefer_ffmpeg': True,
    'keepvideo': True
}

with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download(['https://www.youtube.com/watch?v=JpjEwIceVIo'])


  



  ---

  



  Output :

  



  [youtube] JpjEwIceVIo: Downloading webpage
[download] Speech on Importance of Education in English for Higher Secondary students by Smile Please World-JpjEwIceVIo.webm has already been downloaded
[download] 100% of 1.69MiB
[ffmpeg] Destination: Speech on Importance of Education in English for Higher Secondary students by Smile Please World-JpjEwIceVIo.wav


  



  ---

  



  I want to change the filename to audio1.wav instead of Speech on Importance of Education in English for Higher Secondary students by Smile Please World-JpjEwIceVIo.wav. Please help me with this problem.