I get "Failed to recognize file format" on most Youtube-videos with mpv and youtube-dl recently

[Hund]

I'm running Funtoo Linux (I have the same issue on Arch Linux as well) and recently I have been having issues with a lot of videos can't be played.

$ youtube-dl -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.08.13
[debug] Python version 3.4.6 - Linux-4.9.30-2+deb9u2~bpo8+1-x86_64-Intel-R-_Core-TM-_i5-2500K_CPU_@_3.30GHz-with-gentoo-2.2.1
[debug] exe versions: ffmpeg 3.2.4, ffprobe 3.2.4, rtmpdump 2.4
[debug] Proxy map: {}

This is the last part (with the youtube-dl part only) of the verbos output from mpv:

[ytdl_hook] Loading lua script @ytdl_hook.lua...
[global] config path: 'scripts' -> '/home/johan/.config/mpv/scripts'
[global] config path: 'scripts' -/-> '/home/johan/.mpv/scripts'
[global] config path: 'scripts' -/-> '/etc/mpv/scripts'
[ytdl_hook] loading mp.defaults
[ytdl_hook] loading @ytdl_hook.lua
[cplayer] Run command: hook-add, flags=0, args=[on_load, 1, 10]
[cplayer] Run command: hook-add, flags=0, args=[on_preloaded, 2, 10]
[cplayer] Done loading @ytdl_hook.lua.
[global] config path: 'scripts' -> '/home/johan/.config/mpv/scripts'
[global] config path: 'scripts' -/-> '/home/johan/.mpv/scripts'
[global] config path: 'scripts' -/-> '/etc/mpv/scripts'
[stats] Loading lua script /home/johan/.config/mpv/scripts/stats.lua...
[global] config path: 'scripts' -> '/home/johan/.config/mpv/scripts'
[global] config path: 'scripts' -/-> '/home/johan/.mpv/scripts'
[global] config path: 'scripts' -/-> '/etc/mpv/scripts'
[stats] loading mp.defaults
[global] user path: '/home/johan/.config/mpv/scripts/stats.lua' -> '/home/johan/.config/mpv/scripts/stats.lua'
[stats] loading file /home/johan/.config/mpv/scripts/stats.lua
[global] config path: 'lua-settings/stats.conf' -> '/home/johan/.config/mpv/lua-settings/stats.conf'
[cplayer] Run command: define-section, flags=0, args=[input_stats, i script-binding stats/stats
[cplayer] , default]
[cplayer] Run command: enable-section, flags=0, args=[input_stats, allow-hide-cursor+allow-vo-dragging]
[cplayer] Run command: define-section, flags=0, args=[input_forced_stats, , force]
[cplayer] Run command: enable-section, flags=0, args=[input_forced_stats, allow-hide-cursor+allow-vo-dragging]
[cplayer] Done loading /home/johan/.config/mpv/scripts/stats.lua.
[global] config path: 'watch_later' -> '/home/johan/.config/mpv/watch_later'
[cplayer] Playing: https://www.youtube.com/watch?v=5lsXDxza_WQ
[cplayer] Running hook: ytdl_hook/on_load
[global] config path: 'youtube-dl' -/-> '/home/johan/.config/mpv/youtube-dl'
[global] config path: 'youtube-dl' -/-> '/home/johan/.mpv/youtube-dl'
[global] config path: 'youtube-dl' -/-> '/etc/mpv/youtube-dl'
[ytdl_hook] youtube-dl succeeded! 
[ytdl_hook] 
[ytdl_hook] stack traceback:
[ytdl_hook] 	[C]: in function 'len'
[ytdl_hook] 	@ytdl_hook.lua:59: in function 'edl_escape'
[ytdl_hook] 	@ytdl_hook.lua:103: in function 'edl_track_joined'
[ytdl_hook] 	@ytdl_hook.lua:306: in function 'fn'
[ytdl_hook] 	mp.defaults:518: in function 'handler'
[ytdl_hook] 	mp.defaults:339: in function 'handler'
[ytdl_hook] 	mp.defaults:458: in function 'call_event_handlers'
[ytdl_hook] 	mp.defaults:495: in function 'dispatch_events'
[ytdl_hook] 	mp.defaults:451: in function <mp.defaults:450>
[ytdl_hook] 	[C]: ?
[ytdl_hook] 	[C]: ?
[ytdl_hook] Lua error: @ytdl_hook.lua:59: bad argument #1 to 'len' (string expected, got nil)
[ytdl_hook] Exiting...
[ffmpeg] Opening https://www.youtube.com/watch?v=5lsXDxza_WQ
[ffmpeg] Mime-type: 'text/html; charset=utf-8'
[ffmpeg] Stream opened successfully.
[cache] Cache size set to 150000 KiB (75000 KiB backbuffer)
[demux] Trying demuxers for level=normal.
[ffmpeg] tls: The TLS connection was non-properly terminated.
[cache] EOF reached.
[lavf] No format found, try lowering probescore or forcing the format.
[demux] Trying demuxers for level=unsafe.
[lavf] No format found, try lowering probescore or forcing the format.
[cache] Terminating cache...
[cache] Cache exiting...
[cplayer] Opening failed or was aborted: https://www.youtube.com/watch?v=5lsXDxza_WQ
[cplayer] finished playback, unrecognized file format (reason 4)
[cplayer] Failed to recognize file format.
[cplayer] 
[cplayer] 
[cplayer] Exiting... (Errors when loading file)
[stats] Exiting...

I can successfully download the video with youtube-dl and then play it localy with mpv.

[dstftw]

Report mpv bugs to mpv.

[Hund]

But this is a youtube-dk bug.

[dstftw]

I can successfully download the video with youtube-dl