Watch JuliaCon in the Terminal

[carstenbauer]

@logankilpatrick had an awesome idea on the JuliaCon call: Wouldn't it be super cool if one could watch JuliaCon (the YouTube streams) in the terminal? @IanButterworth, maybe VideoInTerminal.jl can help with this?

[IanButterworth]

Yeah I thought the same. I wonder if we could expose a youtube stream to VideoIO

[carstenbauer]

Maybe something along the lines of https://stackoverflow.com/questions/37040798/how-do-you-use-youtube-dl-to-download-live-streams-that-are-live ? Shouldn't it be somewhat similar to how the camera stream gets displayed with VideoIO?

Unfortunately I have no experience in this area ... :(

[carstenbauer]

Would it be helpful if I would try to create a youtube-dl_jll? (youtube-dl is a python module / requires the python interpreter)

[IanButterworth]

This was easier than I expected...
For the live videos we'd want to pipe the frames directly into julia, rather than download to file like this though

using HTTP, JSON3, FFMPEG, VideoInTerminal

function get_youtube(id = "j18ECUhkeY0")
    f, io = mktemp()
    dest = string(f,".mp4")

    r = HTTP.request("GET", "https://www.youtube.com/get_video_info?video_id=$(id)&html5=1")
    lines = split(HTTP.unescapeuri(String(r.body)), '&')
    for line in lines
        if startswith(line, "player_response")
            pr = JSON3.read(split(line, "player_response=", keepempty = false)[1])
            for format in pr[:streamingData][:adaptiveFormats]
                if format[:height] == 240
                    FFMPEG.exe("-i", format[:url], dest, collect=true)
                    return dest
                end
            end
        end
    end
    error("Could not find usable video")
end

function watch_juliacon(id = "TPuJsgyu87U")
    @info "Grabbing video..."
    vid = get_youtube(id)
    VideoInTerminal.play(vid)
end

name that talk...

[carstenbauer]

This is awesome! Needs a little bit of tweaking though to handle live streams I guess? Example: id = 21X5lGlDOfg (https://www.youtube.com/watch?v=21X5lGlDOfg) doesn't work.

[carstenbauer]

And, just for my understanding, we're still downloading to file in some sense right? (FFMPEG.exe("-i", format[:url], dest, collect=true)

[carstenbauer]

Sorry, one more thing. Any idea how to make audio work ? 😀

[IanButterworth]

Sorry, one more thing. Any idea how to make audio work ?

Nope. It might be possible to extract a subtitle file and print that underneath though

For live streams I think it would probably have to be through VideoIO via an AVInput, but I couldn't figure it out quickly

[oscardssmith]

If we want maximum style points, we could use the say command

[carstenbauer]

I'd still love to have this... it's so cool :) Maybe we could try to use https://github.com/eschnett/SixelTerm.jl to get a reasonable quality? :)