WARNING: unable to extract html5 player

[uruiamme]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.09.08. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.09.08

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

---

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

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 ```):

D:\MEDIA\Videos\YouTube\Download>youtube-dl --download-archive archive.txt --prefer-ffmpeg --ffmpeg-location D:\MEDIA\Videos\YouTube\Download\ffmpeg\bin --restrict-filenames --embed-thumbnail --add-metadata --xattrs -f bestvideo[ext=mp4][height^<=1080]+bestaudio[ext=m4a] -v -i -- 9vk4_2xboOE -X1X7HuFHSg
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--download-archive', 'archive.txt', '--prefer-ffmpeg', '--ffmpeg-location', 'D:\\MEDIA\\Videos\\YouTube\\Download\\ffmpeg\\bin', '--restrict-filenames', '--embed-thumbnail', '--add-metadata', '--xattrs', '-f', 'bestvideo[ext=mp4][height<=1080]+bestaudio[ext=m4a]', '-v', '-i', '--', '9vk4_2xboOE', '-X1X7HuFHSg']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2018.09.08
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.16299
[debug] exe versions: ffmpeg N-88514-gd5995c531d, ffprobe N-88514-gd5995c531d, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] 9vk4_2xboOE: Downloading webpage
[youtube] 9vk4_2xboOE: Downloading video info webpage
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {43} signature length 41.42, html5 player None
[youtube] 9vk4_2xboOE: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflIVQ4xT/en_US/base.js
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {18} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {36} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {17} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {133} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {160} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {140} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {171} signature length 41.42, html5 player None
[youtube] 9vk4_2xboOE: Downloading thumbnail ...
[youtube] 9vk4_2xboOE: Writing thumbnail to: Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.jpg
[debug] Invoking downloader on 'https://r1---sn-ca0xcpgq-hjpe.googlevideo.com/videoplayback?itag=133&mt=1536510558&mn=sn-ca0xcpgq-hjpe%2Csn-vgqsknll&ipbits=0&mm=31%2C29&ms=au%2Crdu&mime=video%2Fmp4&mv=m&source=youtube&pl=24&id=o-AAbthFlouMvHoeK7KhuZfXJix4YmE-x9m5JOcqJgd8h5&initcwndbps=506250&fvip=1&dur=181.147&keepalive=yes&gir=yes&sparams=aitags%2Cclen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&requiressl=yes&key=yt6&clen=2749177&ip=74.50.243.183&aitags=133%2C160&ei=7EqVW56yCcXcDIj8p-AH&c=WEB&lmt=1507502710545940&expire=1536532300&signature=A58FDE9B4C6DB2749D25F13839250171F6FC30E7.E17DB10A5188917490416838A7B57EEF4541AD9D&ratebypass=yes'
[download] Destination: Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f133.mp4
[download] 100% of 2.62MiB in 00:06
[debug] Invoking downloader on 'https://r1---sn-ca0xcpgq-hjpe.googlevideo.com/videoplayback?itag=140&mt=1536510558&mn=sn-ca0xcpgq-hjpe%2Csn-vgqsknll&ipbits=0&mm=31%2C29&ms=au%2Crdu&mime=audio%2Fmp4&mv=m&source=youtube&pl=24&id=o-AAbthFlouMvHoeK7KhuZfXJix4YmE-x9m5JOcqJgd8h5&initcwndbps=506250&fvip=1&dur=181.208&keepalive=yes&gir=yes&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&requiressl=yes&key=yt6&clen=2153918&ip=74.50.243.183&ei=7EqVW56yCcXcDIj8p-AH&c=WEB&lmt=1507502556258440&expire=1536532300&signature=DE846BD0E48D7C8BAFC219203E084C4C75A50EC7.752FD585F298047E2010DBCB655A6655D50CEACC&ratebypass=yes'
[download] Destination: Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f140.m4a
[download] 100% of 2.05MiB in 00:04
[ffmpeg] Merging formats into "Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.mp4"
[debug] ffmpeg command line: "D:\MEDIA\Videos\YouTube\Download\ffmpeg\bin\ffmpeg" -y -i "file:Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f133.mp4" -i "file:Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f140.m4a" -c copy -map "0:v:0" -map "1:a:0" "file:Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.temp.mp4"
Deleting original file Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f133.mp4 (pass -k to keep)
Deleting original file Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.f140.m4a (pass -k to keep)
[ffmpeg] Adding metadata to 'Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.mp4'
[debug] ffmpeg command line: "D:\MEDIA\Videos\YouTube\Download\ffmpeg\bin\ffmpeg" -y -i "file:Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.mp4" -c copy -metadata "title=In The Now-6627" -metadata "comment=Extreme Diet Coke & Mentos Experiments II: The Domino Effect" -metadata "purl=https://www.youtube.com/watch?v=9vk4_2xboOE" -metadata "artist=AudioBody" -metadata "description=Extreme Diet Coke & Mentos Experiments II: The Domino Effect" -metadata "date=20061030" "file:Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.temp.mp4"
[atomicparsley] Adding thumbnail to "Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.mp4"
[debug] AtomicParsley command line: AtomicParsley Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.mp4 --artwork Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.jpg -o Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect-9vk4_2xboOE.temp.mp4
[metadata] Writing metadata to file's xattrs
[youtube] -X1X7HuFHSg: Downloading webpage
[youtube] -X1X7HuFHSg: Downloading video info webpage
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {43} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {18} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {36} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {17} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {135} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {244} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {134} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {243} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {133} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {242} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {160} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {278} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {140} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {171} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {249} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {250} signature length 41.42, html5 player None
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {251} signature length 41.42, html5 player None
[youtube] -X1X7HuFHSg: Downloading thumbnail ...
[youtube] -X1X7HuFHSg: Writing thumbnail to: The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.jpg
[debug] Invoking downloader on 'https://r1---sn-ca0xcpgq-hjpe.googlevideo.com/videoplayback?mt=1536510634&mv=m&ms=au%2Crdu&mm=31%2C29&mn=sn-ca0xcpgq-hjpe%2Csn-vgqs7nlr&c=WEB&aitags=133%2C134%2C135%2C160%2C242%2C243%2C244%2C278&expire=1536532314&mime=video%2Fmp4&key=yt6&ipbits=0&lmt=1437103124185716&itag=135&dur=181.147&initcwndbps=506250&pl=24&source=youtube&requiressl=yes&gir=yes&id=o-AHA6VE3FGW4itpSRm5ldWbfpz1qCvYgj8mwHsw9ZJbnH&keepalive=yes&clen=15484615&ip=74.50.243.183&fvip=1&sparams=aitags%2Cclen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&ei=-kqVW9uPJsOtDeHWrJgE&signature=BBD5F34AB7D3B093D27C21ABB79E34D771434BA6.DA3AEDF7C830E18CED8EA2C8BF25DC5774CABC6C&ratebypass=yes'
[download] Destination: The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f135.mp4
[download] 100% of 14.77MiB in 00:51
[debug] Invoking downloader on 'https://r1---sn-ca0xcpgq-hjpe.googlevideo.com/videoplayback?mt=1536510634&mv=m&ms=au%2Crdu&mm=31%2C29&mn=sn-ca0xcpgq-hjpe%2Csn-vgqs7nlr&c=WEB&fvip=1&expire=1536532314&mime=audio%2Fmp4&key=yt6&ipbits=0&lmt=1437102891987577&itag=140&dur=181.208&initcwndbps=506250&pl=24&source=youtube&requiressl=yes&gir=yes&id=o-AHA6VE3FGW4itpSRm5ldWbfpz1qCvYgj8mwHsw9ZJbnH&keepalive=yes&clen=2878676&ip=74.50.243.183&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&ei=-kqVW9uPJsOtDeHWrJgE&signature=499117294F635AA3041BD9E98B6B152517E44255.AF3B64B1FBB64B9D5F127EB14092B8EFF64C1723&ratebypass=yes'
[download] Destination: The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f140.m4a
[download] 100% of 2.75MiB in 00:06
[ffmpeg] Merging formats into "The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.mp4"
[debug] ffmpeg command line: "D:\MEDIA\Videos\YouTube\Download\ffmpeg\bin\ffmpeg" -y -i "file:The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f135.mp4" -i "file:The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f140.m4a" -c copy -map "0:v:0" -map "1:a:0" "file:The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.temp.mp4"
Deleting original file The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f135.mp4 (pass -k to keep)
Deleting original file The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.f140.m4a (pass -k to keep)
[ffmpeg] Adding metadata to 'The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.mp4'
[debug] ffmpeg command line: "D:\MEDIA\Videos\YouTube\Download\ffmpeg\bin\ffmpeg" -y -i "file:The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.mp4" -c copy -metadata "title=In The Now-6627" -metadata "comment=Fritz & Stephen, the mad scientists from EepyBird, take it even further - with over 250 geysers of soda. And this time they're linked together in one giant chain reaction!" -metadata "purl=https://www.youtube.com/watch?v=-X1X7HuFHSg" -metadata "artist=AudioBody" -metadata "description=Fritz & Stephen, the mad scientists from EepyBird, take it even further - with over 250 geysers of soda. And this time they're linked together in one giant chain reaction!" -metadata "date=20100519" "file:The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.temp.mp4"
[atomicparsley] Adding thumbnail to "The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.mp4"
[debug] AtomicParsley command line: AtomicParsley The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.mp4 --artwork The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.jpg -o The_Extreme_Diet_Coke_Mentos_Experiments_II_-_The_Domino_Effect--X1X7HuFHSg.temp.mp4
[metadata] Writing metadata to file's xattrs

D:\MEDIA\Videos\YouTube\Download>

---

WARNING about html5 player, but download still occurs

This successfully downloaded two videos from Youtube.com, however, there are a lot of warning messages now. In this case, I am downloading mp4 audio+video streams, adding in the comments and screenshots, and outputting to mp4 file(s). I keep track of files in a text database so I don't download the same file multiple times. I just installed the latest youtube-dl after having troubles with a 2017 version starting today. So things did work, but lots of warnings. Thanks devs!!!