Downloaded files renamed without reflecting this in JSON file

[jtotht]

I try to use youtube-dl from another program. I request info JSON as its name is predictable and it contains the actual file’s file name (which can vary depending on the file format chosen). However, when youtube-dl decides to use another format after starting the download, the file extension’s change isn’t reflected in the JSON file.

Example output:

$ youtube-dl -v --write-info-json EVr__5Addjw
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--write-info-json', 'EVr__5Addjw']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.06.08
[debug] Python version 3.5.3 (CPython) - Linux-4.19.0-0.bpo.5-amd64-x86_64-with-debian-9.9
[debug] exe versions: ffmpeg 3.2.14-1, ffprobe 3.2.14-1, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] EVr__5Addjw: Downloading webpage
[youtube] EVr__5Addjw: Downloading video info webpage
[youtube] {22} signature length 104, html5 player vfltBCqwT
[youtube] EVr__5Addjw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vfltBCqwT/en_US/base.js
[youtube] {43} signature length 108, html5 player vfltBCqwT
[youtube] EVr__5Addjw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vfltBCqwT/en_US/base.js
[youtube] {18} signature length 104, html5 player vfltBCqwT
[youtube] {137} signature length 108, html5 player vfltBCqwT
[youtube] {248} signature length 108, html5 player vfltBCqwT
[youtube] {136} signature length 108, html5 player vfltBCqwT
[youtube] {247} signature length 108, html5 player vfltBCqwT
[youtube] {135} signature length 108, html5 player vfltBCqwT
[youtube] {244} signature length 108, html5 player vfltBCqwT
[youtube] {134} signature length 108, html5 player vfltBCqwT
[youtube] {243} signature length 108, html5 player vfltBCqwT
[youtube] {133} signature length 108, html5 player vfltBCqwT
[youtube] {242} signature length 108, html5 player vfltBCqwT
[youtube] {160} signature length 108, html5 player vfltBCqwT
[youtube] {278} signature length 108, html5 player vfltBCqwT
[youtube] {140} signature length 104, html5 player vfltBCqwT
[youtube] {171} signature length 108, html5 player vfltBCqwT
[youtube] {249} signature length 104, html5 player vfltBCqwT
[youtube] {250} signature length 104, html5 player vfltBCqwT
[youtube] {251} signature length 108, html5 player vfltBCqwT
[debug] Default format spec: bestvideo+bestaudio/best
[info] Writing video description metadata as JSON to: David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.info.json
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[debug] Invoking downloader on 'https://r2---sn-qpbpu8-c0qs.googlevideo.com/videoplayback?expire=1560918019&ei=o2MJXYK6LZHB1gK6s52YDg&ip=84.236.58.154&id=o-ABjM56aAb0h8glhUl_cxEC-Jxv3-cRTX4nMIdGgNy5Yh&itag=137&aitags=133%2C134%2C135%2C136%2C137%2C160%2C242%2C243%2C244%2C247%2C248%2C278&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-qpbpu8-c0qs%2Csn-c0q7lnly&ms=au%2Crdu&mv=m&pl=24&initcwndbps=1516250&mime=video%2Fmp4&gir=yes&clen=142602206&dur=428.040&lmt=1540045196224227&mt=1560896297&fvip=2&keepalive=yes&c=WEB&txp=5533432&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cpl%2Cinitcwndbps&lsig=AHylml4wRgIhAIQKLzFWSFrVxjboeMkf3j16O0bogyvhiLPVg4eqvO3xAiEAi2mLlP037ZqmRk9uR41w6yNdkvdVwDtnmNQWjonTwY0%3D&sig=ALgxI2wwRQIgCXSditfgL5LOaPcE5pOX8p2r6rDtPkHTMt5Ju4OY6GICIQDj5GGeTXe10q4u-Hy4XUneEB5EgzO6Q7ymwCFCAkZAcA==&ratebypass=yes'
[download] Destination: David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f137.mp4
[download] 100% of 136.00MiB in 00:30
[debug] Invoking downloader on 'https://r2---sn-qpbpu8-c0qs.googlevideo.com/videoplayback?expire=1560918019&ei=o2MJXYK6LZHB1gK6s52YDg&ip=84.236.58.154&id=o-ABjM56aAb0h8glhUl_cxEC-Jxv3-cRTX4nMIdGgNy5Yh&itag=171&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-qpbpu8-c0qs%2Csn-c0q7lnly&ms=au%2Crdu&mv=m&pl=24&initcwndbps=1516250&mime=audio%2Fwebm&gir=yes&clen=6779545&dur=428.049&lmt=1540048891739392&mt=1560896297&fvip=2&keepalive=yes&c=WEB&txp=5511222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cpl%2Cinitcwndbps&lsig=AHylml4wRgIhAIQKLzFWSFrVxjboeMkf3j16O0bogyvhiLPVg4eqvO3xAiEAi2mLlP037ZqmRk9uR41w6yNdkvdVwDtnmNQWjonTwY0%3D&sig=ALgxI2wwRgIhAM4fx8P1mEf5h0AHCWpevF5jGCDFzZV2isLKk-kl8l1DAiEAz8aCyiu6A_FmyDJAZTbess7Db_V8hZa5yA978KskS7o=&ratebypass=yes'
[download] Destination: David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f171.webm
[download] 100% of 6.47MiB in 00:01
[ffmpeg] Merging formats into "David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.mkv"
[debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f137.mp4' -i 'file:David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f171.webm' -c copy -map 0:v:0 -map 1:a:0 'file:David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.temp.mkv'
Deleting original file David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f137.mp4 (pass -k to keep)
Deleting original file David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.f171.webm (pass -k to keep)

I won’t paste the whole JSON file as it’s pretty large (I can if it’s really needed), but it contains something like this:

{..., "_filename": "David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.mp4", ...}

(The output file name is David Guetta - Dangerous (Official video) ft Sam Martin-EVr__5Addjw.mkv.)

[jtotht]

@dstftw Could you please mention what is this issue the duplicate of?