[REQUEST] --write-single-json argument

[johnlage]

I think it would be helpful for there to be a version of --dump-single-json that wrote the progress to the STDOUT like normal downloading operations, but wrote the JSON file to disk like --write-info-json. This would essentially be --write-info-json for playlists and channels. I am currently writing a website that will use youtube-dl for its youtube video downloading, and video/playlist/channel information gathering. Having this option will allow me to monitor the progress of the information updates easily, which i cannot do with --dump-single-json.

Thanks,

John Lage

[johnlage]

This would be less necessary if something solving #2867 was created, but if that is not possible, that is fine.

[jaimeMF]

Do you want the file to be written with the full playlist (at the end) or that each time a video is downloaded the json file is updated?

[johnlage]

Either one of those would work, but I guess lets go with the write every
time a video downloads option.

Thanks

John Lage