Cannot download all embedded videos when they're from multiple sources

[andonagio]

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Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--get-filename', '-o', '%(title)s', 'testfile.html']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.08.04
[debug] Python version 3.4.3 (CPython) - Linux-3.10.0-693.11.6.1.ELK.el6.x86_64-x86_64-with-glibc2.9
[debug] exe versions: none
[debug] Proxy map: {}
WARNING: Falling back on generic information extractor.
WARNING: Unable to download JSON metadata: HTTP Error 403: Forbidden
[debug] Default format spec: bestvideo+bestaudio/best
Robotype 3 - Sujigen, Mojigen, and 7x7.

...
<end of log>

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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

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youtube-dl does not recognize all of the embedded videos in a webpage when those videos are from different sources. My testfile.html looks like this:

<iframe allowfullscreen frameborder="0" height="349" src="https://www.youtube.com/embed/t83OovAxcCY" width="620"></iframe>
<iframe allowfullscreen frameborder="0" height="349" src="https://www.youtube.com/embed/HmTGKTFpCxM" width="620"></iframe>
<iframe allowfullscreen frameborder="0" height="360" src="https://player.vimeo.com/video/243823280" width="640"></iframe>

If I remove the iframe referencing the Vimeo file, youtube-dl gives me the two YouTube files, i.e.

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--get-filename', '-o', '%(title)s', 'testfile.html']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.08.04
[debug] Python version 3.4.3 (CPython) - Linux-3.10.0-693.11.6.1.ELK.el6.x86_64-x86_64-with-glibc2.9
[debug] exe versions: none
[debug] Proxy map: {}
WARNING: Falling back on generic information extractor.
[debug] Default format spec: bestvideo+bestaudio/best
Learning Interactions from Natural Language Instruction and Demonstration
[debug] Default format spec: bestvideo+bestaudio/best
Sado Robotics 151A ver2

. If I include the Vimeo file, youtube-dl gives me just the Vimeo file and ignores the two YouTube files, i.e.

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--get-filename', '-o', '%(title)s', 'testfile.html']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.08.04
[debug] Python version 3.4.3 (CPython) - Linux-3.10.0-693.11.6.1.ELK.el6.x86_64-x86_64-with-glibc2.9
[debug] exe versions: none
[debug] Proxy map: {}
WARNING: Falling back on generic information extractor.
WARNING: Unable to download JSON metadata: HTTP Error 403: Forbidden
[debug] Default format spec: bestvideo+bestaudio/best
Robotype 3 - Sujigen, Mojigen, and 7x7.

Is there a way for me to download both the YouTube files and the Vimeo file all at once? Please let me know.

[dstftw]

Not possible.

[andonagio]

Okay, it's good to know this is not possible. However, I do have a few follow-up questions:

• Would somebody please help me understand why it's not possible?
• If it's not possible, would it be possible to give preference to the YouTube videos over the Vimeo video?
• I noticed the "duplicate" tag. Is there another discussion of this issue elsewhere that I overlooked? If so, I apologize.

Please let me know. Thanks!