How to add post processing options when using youtube-dl in a python script

Question

How to add post-processing options equivalent of --embed-thumbnails and --add-metadata when using youtube-dl in a python script?

I read the following documentation, but couldn't find post processing 'key value' options. https://github.com/rg3/youtube-dl/blob/master/README.md#embedding-youtube-dl

score 6 · Accepted Answer · 2018-02-07 20:25:40Z

6

The full list of options is documented in YoutubeDL.py. If you only want to replicate command-line options, you can also have a look in __init__.py.

To replicate --embed-thumbnail and --add-metadata, use the following:

from __future__ import unicode_literals
import youtube_dl

ydl_opts = {
    'writethumbnail': True,
    'postprocessors': [{
        'key': 'FFmpegMetadata'
    }, {
        'key': 'EmbedThumbnail',
        'already_have_thumbnail': True,  # overwrite any thumbnails already present
    }],
}

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

edited Feb 7, 2018 at 20:25

answered Feb 7, 2018 at 10:35

anon

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13 Comments

Ras Over a year ago

I need to add metadata not subtitles, so I used code ydl_opts = { 'format': '140', 'postprocessors': [ {'key': 'FFmpegMetadata',}, {'key': 'EmbedThumbnail', 'already_have_thumbnail': True,}], 'outtmpl': '%(playlist_index)s - %(title)s.%(ext)s', 'logger': MyLogger(), 'progress_hooks': [my_hook], } code but it gives following error youtube_dl\postprocessor\embedthumbnail.py", line 36, in run thumbnail_filename = info['thumbnails'][-1]['filename']

Ras Over a year ago

KeyError: u'filename` missed this line in my above comment

anon Over a year ago

Oops, changed to use metadata, not thumbnails. Does the new code work for you? It runs for me without any problem. Your error seems to be related to thumbnail embedding, which you don't want, or do you after all?

Ras Over a year ago

Still your code is for subtitle, isn't it? I need metadata and thumbnail (no subtitle required)

anon Over a year ago

Oh, I'm sorry. Updated again. You'll get an error if you enable just the postprocessor but do not the actual thumbnail extraction.

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