[Question] Downloading to io.BytesIO?

[hyarsan]

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Description of your issue, suggested solution and other information

How do you download a video to a filename / io.BytesIO using youtube-dl in Python 3.6?
What I'm trying to do is something like:

import youtube_dl
from io import BytesIO

outputBuffer = BytesIO()
with youtube_dl.YoutubeDL({"filename": outputBuffer}) as ydl:
    ydl.download(["https://www.youtube.com/watch?v=BaW_jenozKc"])
outputBuffer.seek(0)

but I can't get that to work.

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[dstftw]

You can't.

[hyarsan]

How would you download to a filename at least? @dstftw

[dstftw]

https://github.com/rg3/youtube-dl/blob/master/youtube_dl/YoutubeDL.py#L162

[achalddave]

I was able to download to a BytesIO with the following:

import logging
from contextlib import redirect_stdout
from io import BytesIO

import youtube_dl


def download_bytesio(url):
    ydl_opts = {
        'format': 'best[ext=mp4]',
        'outtmpl': '-',
        'logger': logging.getLogger()
    }

    video = BytesIO()
    with redirect_stdout(video):
        with youtube_dl.YoutubeDL(ydl_opts) as ydl:
            ydl.download([url])
    return video

Example usage:

if __name__ == '__main__':
    # Example download
    video = download_bytesio('http://youtu.be/-86Te2-JCeg')
    video.seek(0)
    filename = 'tmp.mp4'
    with open(filename, 'wb') as f:
        f.write(video.read())
    print(f'Saved video to {filename}')