kaltura video download problem

[p3t30r]

Checklist

• I'm reporting a broken site support issue
• 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 bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

userAcoount@computer:/media/user/90586774/Orelly/Lesson00$ youtube-dl -v -u myUsername -p myPassword -o "%(playlist)s/%(playlist_index)s-%(title)s.%(ext)s" -f best https://learning.oreilly.com/videos/selenium-webdriver-with/9781789131550 --all-subs
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'-u', u'PRIVATE', u'-p', u'PRIVATE', u'-o', u'%(playlist)s/%(playlist_index)s-%(title)s.%(ext)s', u'-f', u'best', u'https://learning.oreilly.com/videos/selenium-webdriver-with/9781789131550', u'--all-subs']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.01
[debug] Python version 2.7.17 (CPython) - Linux-5.0.0-32-generic-x86_64-with-LinuxMint-19.3-tricia
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6
[debug] Proxy map: {}
[safari:course] Downloading login page
[safari:course] Logging in
[safari:course] Completing login
[safari:course] 9781789131550: Downloading course JSON
[download] Downloading playlist: Selenium WebDriver With Python 3.x - Novice To Ninja
[safari:course] playlist Selenium WebDriver With Python 3.x - Novice To Ninja: Collected 193 video ids (downloading 193 of them)
[download] Downloading video 1 of 193
[safari:api] Downloading login page
[safari:api] 9781789131550/video1_1: Downloading part JSON
[safari] Downloading login page
[safari] 9781789131550-video1_1: Downloading webpage
[safari] 9781789131550-video1_1: Downloading kaltura session JSON
WARNING: [safari] 9781789131550-video1_1: Failed to parse JSON No JSON object could be decoded
[Kaltura] 9781789131550-video1_1: Downloading webpage
[Kaltura] 0_fyee45lt: Downloading video info JSON
[Kaltura] 0_fyee45lt: Checking mp4-844 URL
[Kaltura] 0_fyee45lt: Downloading m3u8 information
[debug] Invoking downloader on u'http://cdnapi.kaltura.com/p/1926081/sp/192608100/playManifest/entryId/0_fyee45lt/format/url/protocol/http/flavorId/0_662i1ibd'
[download] Destination: Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.mp4
[download] 100% of 5.69MiB in 00:03
[download] Downloading video 2 of 193
[safari:api] 9781789131550/video1_2: Downloading part JSON
[safari] 9781789131550-video1_2: Downloading webpage

myuser@mycomputer:/media/myuser/805656/Orelly/python$ youtube-dl  -v   -u myUsername -p  myPassword -o "%(playlist)s/%(playlist_index)s-%(title)s.%(ext)s"   -f best https://learning.oreilly.com/videos/selenium-webdriver-with/9781789131550   --all-subs
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'-u', u'PRIVATE', u'-p', u'PRIVATE', u'-o', u'%(playlist)s/%(playlist_index)s-%(title)s.%(ext)s', u'-f', u'best', u'https://learning.oreilly.com/videos/selenium-webdriver-with/9781789131550', u'--all-subs']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.01
[debug] Python version 2.7.17 (CPython) - Linux-5.0.0-32-generic-x86_64-with-LinuxMint-19.3-tricia
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6
[debug] Proxy map: {}
[safari:course] Downloading login page
[safari:course] Logging in
[safari:course] Completing login
[safari:course] 9781789131550: Downloading course JSON
[download] Downloading playlist: Selenium WebDriver With Python 3.x - Novice To Ninja
[safari:course] playlist Selenium WebDriver With Python 3.x - Novice To Ninja: Collected 193 video ids (downloading 193 of them)
[download] Downloading video 1 of 193
[safari:api] Downloading login page
[safari:api] 9781789131550/video1_1: Downloading part JSON
[safari] Downloading login page
[safari] 9781789131550-video1_1: Downloading webpage
[safari] 9781789131550-video1_1: Downloading kaltura session JSON
WARNING: [safari] 9781789131550-video1_1: Failed to parse JSON No JSON object could be decoded
[Kaltura] 9781789131550-video1_1: Downloading webpage
[Kaltura] 0_fyee45lt: Downloading video info JSON
[Kaltura] 0_fyee45lt: Checking mp4-844 URL
[Kaltura] 0_fyee45lt: mp4-844 URL is invalid, skipping
[Kaltura] 0_fyee45lt: Downloading m3u8 information
[debug] Invoking downloader on u'http://cfvod.kaltura.com/scf/hls/p/1926081/sp/192608100/serveFlavor/entryId/0_fyee45lt/v/2/ev/8/flavorId/0_1s7e8pd2/name/a.mp4/clipTo/60000/index.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cDovL2Nmdm9kLmthbHR1cmEuY29tL3NjZi9obHMvcC8xOTI2MDgxL3NwLzE5MjYwODEwMC9zZXJ2ZUZsYXZvci9lbnRyeUlkLzBfZnllZTQ1bHQvdi8yL2V2LzgqIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNTc5MDUyOTg0fX19XX0_&Signature=VIyfLd7YG643NzLfekezb5eIxhLyRRtv7fhIiTylp652RBeDHPIGI1mZ4Rptf6jOXkTMNGnEQYwpnVfLvvz7hyh4hhDPcMrfARxCWl8MyhucI1U4HwM328yBAajS4SsFNSl-a4a010EssHLocjqRtq4qDELR3Q7qijgYR7mSfe8qJxnbDNGCS-5KK4925rVQo49YoraAjTlUuVzUOofXG7murCzXHjuGCf~AM9Y5iCXIVsfR6Q3~tuPQTXsXKGRPrYWUcDvuo8BeWPktWmt1CHO4JcEh79aER-IRMCqFllF~I5uXqDwjJfURp5ZqaZ9j~Vtr5V9ymTrYAqGW5GJBXg__&Key-Pair-Id=APKAJT6QIWSKVYK3V34A'
[download] Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.mp4 has already been downloaded
[download] 100% of 5.69MiB
[debug] ffmpeg command line: ffprobe -show_streams 'file:Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.mp4'
[ffmpeg] Fixing malformed AAC bitstream in "Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.mp4"
[debug] ffmpeg command line: ffmpeg -y -loglevel 'repeat+info' -i 'file:Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.mp4' -c copy -f mp4 '-bsf:a' aac_adtstoasc 'file:Selenium WebDriver With Python 3.x - Novice To Ninja/001-Introduction.temp.mp4'
[download] Downloading video 2 of 193
[safari:api] 9781789131550/video1_2: Downloading part JSON
[safari] 9781789131550-video1_2: Downloading webpage
[safari] 9781789131550-video1_2: Downloading kaltura session JSON
WARNING: [safari] 9781789131550-video1_2: Failed to parse JSON No JSON object could be decoded
[Kaltura] 9781789131550-video1_2: Downloading webpage
[Kaltura] 0_uc82vqzl: Downloading video info JSON
[Kaltura] 0_uc82vqzl: Checking mp4-5909 URL
[Kaltura] 0_uc82vqzl: Downloading m3u8 information
[debug] Invoking downloader on u'http://cdnapi.kaltura.com/p/1926081/sp/192608100/playManifest/entryId/0_uc82vqzl/format/url/protocol/http/flavorId/0_72av8s6k'
[download] Destination: Selenium WebDriver With Python 3.x - Novice To Ninja/002-How to reach me anytime and ask questions.mp4

Description

WRITE DESCRIPTION HERE
While trying to download videos from kaltura (oreilly lessons) it only downloads first part of videos. It is only 1 minute all video files. Not more than this. I think It is from not reading json file which contains part infos. I posted verbose logs above. Thank you for responses.
Best Regards.