Vimeo video downloads but audio is not extracted

[cmanallen]

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I can not extract the audio from this URL (https://vimeo.com/121209380) when an outtmpl is specified.

Most videos from Vimeo I can download and extract the audio without issue. However, this particular video's audio is not extracted when outtmpl is specified. I have tried videos of similar length from the same publisher. All of which download and extract without issue.

When I remove my outtmpl, the video downloads and the audio is extracted as expected.

My code:

options = {
    'outtmpl': 'test.m4a',
    'format': 'bestaudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'm4a',
        'preferredquality': '192',
    }]
}
with youtube_dl.YoutubeDL(options) as youtube:
    youtube.download(['https://vimeo.com/121209380'])

Is there a way to return the filename of a downloaded video without specifying an outtmpl?

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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Single video: https://www.youtube.com/watch?v=BaW_jenozKc
• Single video: https://youtu.be/BaW_jenozKc
• Playlist: https://www.youtube.com/playlist?list=PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc

Note that youtube-dl does not support sites dedicated to copyright infringement. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

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[dstftw]

Do not hardcode extension in output template.

[cmanallen]

@dstftw Using %(ext)s still causes the same issue.

[dstftw]

Prove with verbose log.

[cmanallen]

@dstftw How can I do this if I'm running a script? eg python test.py. Running now

[cmanallen]

@dstftw Invalid. The extension was causing the error.