YouTube: `--playlist-random` randomizes `%(playlist_index)s` values

[hofmand]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.06.16.1
• 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

C:\>youtube-dl -v --get-filename --playlist-random -o "%(playlist_index)s - %(title).80s.%(ext)s" https://www.youtube.com/playlist?list=PLJ8RjvesnvDN7dh5oiZzTrzLkECJHWNKn
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--get-filename', '--playlist-random', '-o', '%(playlist_index)s - %(title).80s.%(ext)s', 'https://www.youtube.com/playlist?list=PLJ8RjvesnvDN7dh5oiZzTrzLkECJHWNKn']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2020.06.16.1
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: ffmpeg N-92681-g0e833f615b, ffprobe N-92681-g0e833f615b
[debug] Proxy map: {}
[debug] Default format spec: bestvideo+bestaudio/best
01 - Another Word from Our Sponsor.mp4
[debug] Default format spec: bestvideo+bestaudio/best
02 - Anthony Quinn Wins Supporting Actor - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
03 - George Stevens Wins Best Directing - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
04 - Writing Winners - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
05 - Yul Brynner Wins Best Actor - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
06 - A Word from Oldsmobile.mp4
[debug] Default format spec: bestvideo+bestaudio/best
07 - Around the World in Eighty Days and The King and I Win Music Awards - 1957 Oscar.mp4
[debug] Default format spec: bestvideo+bestaudio/best
08 - Oldsmobile Goes Airborne - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
09 - 'Que Sera, Sera (Whatever Will Be, Will Be)' Wins Original Song - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
10 - Mister Magoo's Puddle Jumper Wins Short Subject Cartoon - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
11 - The Ten Commandments Wins Special Effects - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
12 - Around the World in 80 Days Wins Best Picture - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
13 - Somebody Up There Likes Me and Around the World in Eighty Days Win Cinematograph.mp4
[debug] Default format spec: bestvideo+bestaudio/best
14 - Art Direction Winners - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
15 - Live Action Short Subject Winners - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
16 - Special Awards - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
17 - Dorothy Malone Wins Supporting Actress - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
18 - The King and I Wins Sound Recording - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
19 - Around the World in 80 Days Wins Film Editing - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
20 - 'La Strada' Wins Foreign Language Film - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
21 - The Solid Gold Cadillac and The King and I Win Costume Design - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
22 - Jerry Lewis's Opening Monologue - 1957 Oscars.mp4
[debug] Default format spec: bestvideo+bestaudio/best
23 - Ingrid Bergman Wins Best Actress - 1957 Oscars.mp4

Description

If you bring up the playlist in a web browser, "Jerry Lewis's Opening Monologue" is playlist item 01, but in the log above it's 22.