Problem downloading from learning.oreilly.com

[iss-gal]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.01.01
• 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-dl2) [...]$ python --version
Python 3.6.8
(youtube-dl2) [...] youtube-dl --version
2020.01.01


youtube-dl -v --username xxxxxx@xxxxxxx --password xxxxxxxxxi -o "Oreilly - %(playlist)s/%(playlist_index)s - %(title)s.%(ext)s" "https://www.oreilly.com/library/view/high-availability-for/9781789804256/"  --add-metadata --write-sub --sleep-interval 15 --max-sleep-interval 30 | tee $(date +%Y%m%d-%h:%M).log
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--username', 'PRIVATE', '--password', 'PRIVATE', '-o', 'Oreilly - %(playlist)s/%(playlist_index)s - %(title)s.%(ext)s', 'https://www.oreilly.com/library/view/high-availability-for/9781789804256/', '--add-metadata', '--write-sub', '--sleep-interval', '15', '--max-sleep-interval', '30']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.01
[debug] Python version 3.6.8 (CPython) - Linux-5.0.0-37-generic-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6, phantomjs 12, rtmpdump 2.4
[debug] Proxy map: {}
[safari:course] Downloading login page
[safari:course] Logging in
[safari:course] Completing login
[safari:course] 9781789804256: Downloading course JSON
[download] Downloading playlist: High Availability for the LAMP Stack, Step-by-Step
[safari:course] playlist High Availability for the LAMP Stack, Step-by-Step: Collected 22 video ids (downloading 22 of them)
[download] Downloading video 1 of 22
[safari:api] Downloading login page
[safari:api] 9781789804256/video1_1: Downloading part JSON
[safari] Downloading login page
[safari] 9781789804256-video1_1: Downloading webpage
[safari] 9781789804256-video1_1: Downloading kaltura session JSON
WARNING: [safari] 9781789804256-video1_1: Failed to parse JSON Expecting value: line 5 column 1 (char 4)
[Kaltura] 9781789804256-video1_1: Downloading webpage
[Kaltura] 0_jkuh5b2w: Downloading video info JSON
[Kaltura] 0_jkuh5b2w: Checking mp4-445 URL
[Kaltura] 0_jkuh5b2w: Downloading m3u8 information
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on 'http://cdnapi.kaltura.com/p/1926081/sp/192608100/playManifest/entryId/0_jkuh5b2w/format/url/protocol/http/flavorId/0_rrpma11l'
[download] Oreilly - High Availability for the LAMP Stack, Step-by-Step/01 - Introduction.mp4 has already been downloaded
[download] 100% of 3.12MiB
[ffmpeg] Adding metadata to 'Oreilly - High Availability for the LAMP Stack, Step-by-Step/01 - Introduction.mp4'
[debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:Oreilly - High Availability for the LAMP Stack, Step-by-Step/01 - Introduction.mp4' -c copy -metadata title=Introduction -metadata date=20180927 -metadata 'purl=https://cdnapisec.kaltura.com/html5/html5lib/v2.37.1/mwEmbedFrame.php?wid=_1926081&uiconf_id=29375172&flashvars%5BreferenceId%5D=9781789804256-video1_1' -metadata artist=stork 'file:Oreilly - High Availability for the LAMP Stack, Step-by-Step/01 - Introduction.temp.mp4'
[download] Downloading video 2 of 22
[safari:api] 9781789804256/video1_2: Downloading part JSON

Description

Hi,
This is a strange problem. All the videos are downloaded fine but all of them have the same length, 1 minute, so part of the video is missing. The only visible error is the JSON warning included with the logs.
I have watched several videos online on this course and they played fine, i.e. the full length.