How to download summit videos

[DomagojDz]

Checklist

• [x ] I'm asking a question
• [x ] I've looked through the README and FAQ for similar questions
• I've searched the bugtracker for similar questions including closed ones

Question

WRITE QUESTION HERE
I am trying to download videos from here https://digitaldementiasummit.com/dznprs/ but youtube-dl is downloading only .mp3 provided on the same web page. I download such events quite often but since Firefox plugins became unable to do it recently, I am struggling to satisfy youtube-dl without any success.
Can anyone simply register to this event and try it, instead of making a whole thread of discussion?

This is the best I achieved so far:

youtube-dl https://digitaldementiasummit.com/expert/jay-davidson/ --cookies /home/domagoj/cookies.txt -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'https://digitaldementiasummit.com/expert/jay-davidson/', u'--cookies', u'/home/domagoj/cookies.txt', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.05.20
[debug] Python version 2.7.15rc1 (CPython) - Linux-4.15.0-45-generic-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.4, ffprobe 3.4.4, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[generic] jay-davidson: Requesting header
WARNING: Falling back on generic information extractor.
[generic] jay-davidson: Downloading webpage
[generic] jay-davidson: Extracting information
[download] Downloading playlist: Jay Davidson - Digital Dementia Summit
[generic] playlist Jay Davidson - Digital Dementia Summit: Collected 1 video ids (downloading 1 of them)
[download] Downloading video 1 of 1
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on u'https://hto-content.s3.amazonaws.com/user_videos/255bd064-d0b7-48d5-9e37-42bf83f2ce49/audio/mp3/128/255bd064-d0b7-48d5-9e37-42bf83f2ce49.mp3'
[download] Jay Davidson - Digital Dementia Summit-jay-davidson.mp3 has already been downloaded
[download] 100% of 29.71MiB
[download] Finished downloading playlist: Jay Davidson - Digital Dementia Summit

[bitraid]

I took a closer look and it seems that these are segmented vimeo videos, which youtube-dl can't download directly. You have to open the (browser) inspector (on the page) go "Network -> XHR", find and click on a "Name" with *.m3u8 and from the "Headers" copy the "Request URL" and pass it to youtube-dl.

[DomagojDz]

Thanks, there's nothing with .m3u8 extension. And where is "Name" actually located?

[bitraid]

At your inspector, it's in the "File" field called playlist.m3u8.

[DomagojDz]

Something's moving now :-) let's see how it ends (but it downloads at the speed of streaming).
Thanks!

[DomagojDz]

OK, this works, but with one caveat in case of using "/" for multiple targets.
If I set youtube-dl to rip multiple streams one after another, it returns "playlist-playlist.mp4 already downloaded" because it gives the same name to each output file (playlist-playlist.mp4), instead of adding numbers to a "copy", eg . "playlist-playlist(1).mp4" as I would expect in default file system.
This also prevents me from downloading more than one stream (in multiple terminals opened) simultaneously, because each output file has the same name.

[remitamine]

use original Vimeo URLs(pass --referer option if needed).

[bitraid]

OK, this works, but with one caveat in case of using "/" for multiple targets.

I think you've misunderstood the use of /.

each output file has the same name.

Use -o option to set the name beforehand.

[DomagojDz]

use original Vimeo URLs(pass --referer option if needed).

Bitraid, you think this is possible in this case?

I do separate streams with "/" and yt-dl catches it but gives same names to outputs. I'll try with -o

[bitraid]

The only vimeo link the page provides is that of the playlist. If you view the page source and search for m3u8, you will find the playlist url (in the src field of player.playlist) pointing to vimeo.com - but still outputs the same name for each file.