--format='bestvideo+bestaudio' --get-url crashes

[Nikoli]

Many videos are available in 1080p only in DASH formats. Often i prefer to play videos in mpv instead of saving to file, it supports external audio tracks. I guess youtube-dl should return several urls, may be in some special or custom format. Now it just crashes:

$ youtube-dl --format='bestvideo+bestaudio' --get-url https://www.youtube.com/watch?v=MjQG1s3Isgg
Traceback (most recent call last):
  File "/usr/bin/youtube-dl", line 6, in <module>
    youtube_dl.main()
  File "/usr/lib64/python2.7/site-packages/youtube_dl/__init__.py", line 847, in main
    _real_main(argv)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/__init__.py", line 837, in _real_main
    retcode = ydl.download(all_urls)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 1039, in download
    self.extract_info(url)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 527, in extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 564, in process_ie_result
    return self.process_video_result(ie_result, download=download)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 819, in process_video_result
    self.process_info(new_info)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 860, in process_info
    self.to_stdout(info_dict['url'] + info_dict.get('play_path', ''))
KeyError: u'url'

$ youtube-dl --version
2014.05.05

[filoozom]

I don't think that this is supported, youtube-dl doesn't mux DASH files, you have to do it yourself and download both files separately, then use ffmpeg or something similar to mux both files.

[jaimeMF]

@filoozom it's supported (but undocumented), see #1612. youtube-dl will mux the two formats if you request them.

[Nikoli]

Also for this use case i do not need to mux video and audio, i just need urls, mpv will do the rest.

[filoozom]

@jaimeMF Oh, didn't see, that's quite handy. Will try that asap.

[cryptonaut]

The above referenced commit (16ae61f) fixes this bug and outputs URLs separated by new lines. You can split the output, to use with mpv for example, in a script with something like this (bash):

urls=( $(youtube-dl --format='bestvideo+bestaudio' --get-url "https://www.youtube.com/watch?v=MjQG1s3Isgg") )

video_url="${urls[0]}"
audio_url="${urls[1]}"

mpv --audio-file "$audio_url" "$video_url"