Subtitle problem with --load-info-json switch

[afsharsafavi]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.03.24
• 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

youtube-dl --load-info-json 1.js "https://www.youtube.com/watch?v=brkgt0d_vY4" --write-sub --sub-lang en,fa --embed-subs --write-auto-sub -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--load-info-json', u'1.js', u'https://www.youtube.com/watch?v=brkgt0d_vY4', u'--write-sub', u'--sub-lang', u'en,fa', u'--embed-subs', u'--write-auto-sub', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.03.24
[debug] Python version 2.7.5 (CPython) - Linux-3.10.0-514.10.2.el7.x86_64-x86_64
[debug] exe versions: avconv 12.3, avprobe 12.3, ffmpeg 4.2.1, ffprobe 4.2.1, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on u'https://r2---sn-5hne6nlk.googlevideo.com/videoplayback?expire=1587442138&ei=eh2eXqH0DZbI7gPMx6nwDA&ip=2a00%3A1768%3A1001%3A54%3A%3A324&id=o-ALVKP-LtIROWxGnH75MX7nGKJgw5cnflKopkbA2CJG0G&itag=247&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278&source=youtube&requiressl=yes&mh=RB&mm=31%2C29&mn=sn-5hne6nlk%2Csn-5hnekn7k&ms=au%2Crdu&mv=m&mvi=1&pl=36&initcwndbps=812500&vprv=1&mime=video%2Fwebm&gir=yes&clen=69347482&dur=2179.944&lmt=1556389252957928&mt=1587420455&fvip=2&keepalive=yes&c=WEB&txp=5535432&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=AJpPlLswRAIgXzvGkmk3UIx64vG4xfgR1MSIzm3HMGOAYto8AUDV4scCIEssqambCnoh24dEqg3f9Hj8JGe9C3yN5QXh3M0s6sVR&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=ALrAebAwRAIgVsRuQYhaLIrA4Rt9x0X4MzVL1TxUsBPxKyBE3zVvJs8CIHIpLW2q8KG6ogRO-fiEGXhNzWrIqlat88sa8-w149Tj&ratebypass=yes'
[download] Destination: Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f247.webm
[download] 100% of 66.13MiB in 00:01
[debug] Invoking downloader on u'https://r2---sn-5hne6nlk.googlevideo.com/videoplayback?expire=1587442138&ei=eh2eXqH0DZbI7gPMx6nwDA&ip=2a00%3A1768%3A1001%3A54%3A%3A324&id=o-ALVKP-LtIROWxGnH75MX7nGKJgw5cnflKopkbA2CJG0G&itag=251&source=youtube&requiressl=yes&mh=RB&mm=31%2C29&mn=sn-5hne6nlk%2Csn-5hnekn7k&ms=au%2Crdu&mv=m&mvi=1&pl=36&initcwndbps=812500&vprv=1&mime=audio%2Fwebm&gir=yes&clen=37112351&dur=2180.021&lmt=1556385211465176&mt=1587420455&fvip=2&keepalive=yes&c=WEB&txp=5531432&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=AJpPlLswRQIhAJBSrR9xfCOxAI3ELVvW8_5yCoYxj2l4e943OwPezxnmAiBgpT9iRuGjyihwG2CkQdy7ilhdAn6a9tXdXEbq0OT8DQ%3D%3D&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=ALrAebAwRAIgVsRuQYhaLIrA4Rt9x0X4MzVL1TxUsBPxKyBE3zVvJs8CIHIpLW2q8KG6ogRO-fiEGXhNzWrIqlat88sa8-w149Tj&ratebypass=yes'
[download] Destination: Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f251.webm
[download] 100% of 35.39MiB in 00:00
[ffmpeg] Merging formats into "Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.webm"
[debug] ffmpeg command line: ffmpeg -y -loglevel 'repeat+info' -i 'file:Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f247.webm' -i 'file:Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f251.webm' -c copy -map '0:v:0' -map '1:a:0' 'file:Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.temp.webm'
Deleting original file Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f247.webm (pass -k to keep)
Deleting original file Cinema 4D R20 tutorial - Transforming effect-brkgt0d_vY4.f251.webm (pass -k to keep)
[ffmpeg] There aren't any subtitles to embed

Description

Hi
I have a problem with subtitles while using --load-info-json.
Without this switch, there is no problem and subtitles has been downloaded.
But it seems with --load-info-json, Youtube-dl forgot subtitles

[dstftw]

This is expected behavior. With --load-info-json no extraction takes place, all data is loaded from JSON. If you need to extract subtitles the you must write JSON with subtitle options enabled.