[youtube] Unable to extract video title

[ProgrammerAKL]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.07.27
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

youtube-dl -o "C:/Video/%(title)s.%(ext)s" "https://www.youtube.com/watch?v=MTaBPmNdGc4" --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', 'C:/Video/%(title)s.%(ext)s', 'https://www.youtube.com/watch?v=MTaBPmNdGc4', '--verbose']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2019.07.27
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.10586
[debug] exe versions: phantomjs 2.1.1
[debug] Proxy map: {}
[youtube] MTaBPmNdGc4: Downloading webpage
[youtube] MTaBPmNdGc4: Downloading video info webpage
WARNING: Unable to extract video title
[debug] Default format spec: best/bestvideo+bestaudio
[debug] Invoking downloader on 'https://r8---sn-cxaaj5o5q5-tt1d.googlevideo.com/videoplayback?expire=1564472104&ei=x54_Xdv-MpiU8wT6x7zoAw&ip=76.68.26.0&id=o-ADwhq3-SomwmaSkDiRIXxSORtCECeysHJEC6zayzy-Fp&itag=22&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-cxaaj5o5q5-tt1d%2Csn-t0a7ln7d&ms=au%2Conr&mv=m&mvi=7&pl=22&initcwndbps=1498750&mime=video%2Fmp4&ratebypass=yes&dur=2711.997&lmt=1559793711762420&mt=1564450420&fvip=4&c=WEB&txp=2316222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&sig=ALgxI2wwRAIgAWy3wfm94bykZ1YvBiX4O4dv9K5B42C5Gh7WhKTp28UCIAMOh1oH7A1FBcanT03Vdgp8E5JAYmVmICY_UXPNTpU0&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRQIgV0J6YHvH1i4GYbLdZwztQr30TeVgwUpztlSDKVfb9PMCIQC27_MXHmeNPElfMch6MW8vr_n_08BttdgZkZjwCpdQDw%3D%3D'
[download] Destination: C:\Video\_.mp4
[download]   0.2% of 495.65MiB at 442.00KiB/s ETA 19:06

youtube-dl -o "C:/Video/%(title)s.%(ext)s" "https://www.youtube.com/playlist?list=UUBpkynZJzpNVri_lw2GuayA" --no-check-certificate --ignore-errors --verbose -e --playlist-end 4
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', 'C:/Video/Comic-Con/%(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=UUBpkynZJzpNVri_lw2GuayA', '--no-check-certificate', '--ignore-errors', '--verbose', '-e', '--playlist-end', '4']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2019.07.27
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.10586
[debug] exe versions: phantomjs 2.1.1
[debug] Proxy map: {}
WARNING: Unable to extract video title
[debug] Default format spec: bestvideo+bestaudio/best
_
WARNING: Unable to extract video title
[debug] Default format spec: bestvideo+bestaudio/best
_
WARNING: Unable to extract video title
[debug] Default format spec: bestvideo+bestaudio/best
_
WARNING: Unable to extract video title
[debug] Default format spec: bestvideo+bestaudio/best
_

Description

The error message 'Unable to extract video title' is now appearing for every youtube video.

[phamnhungoctuan]

Me too. Please help :(

[chrisknepper]

Same, on Windows 10 with 2019.07.27 binary file.

If it helps, I am also seeing this same issue with the commercial program "4K Video Downloader" so not sure if that program uses youtube-dl under the hood or if this is a wider parsing change on the YouTube side. With 4K Video Downloader, the problem only seems to occur when attempting to download lists of videos such as playlists, not individual videos.

[jmhehir]

Same issue, prints a unique 13 character string all starting with _- and the remaining characters are upper and lower case letters and numbers. After the first attempt, I upgraded to (2019.07.27) with the same results. Worked fine yesterday.
Thanks

[FedeHC]

Yep, same here too with Linux Mint 18.3 (x64) and lastest version (2019.07.27).