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# yt-dlp installed with pip
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# nb: you may need to update yt-dlp frequently to keep up with changes made by commercial services
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# to prevent downloading tools like yt-dlp to stay working!
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#
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# pip install --upgrade yt-dlp
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#
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# Download the playlist, writing info in json
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yt-dlp "https://www.mixcloud.com/radiowormrotterdam/playlists/worm-25/" --write-info-json
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# let's move the files to a sub-folder
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mkdir worm25
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mv *.info.json *.webm worm25
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#
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# _.........._
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# | |xpub | |
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# | | | |
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# | | | |
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# | |________| |
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# | ______ |
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# | | | | |
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# |__|____|_|__|
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#
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# IN the early days of computer history
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# on computers using DOS (or Disk Operating System)
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# file names needed to conform to a very strict standard
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# of 8 letters, with only A-Z , dash -, and underscore _ , and numbers 0-9
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# (and no spaces!)
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# plus a 3 letter extension indicating the type of file
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# for example README.TXT
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#
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# Copy one file in this folder and give it a short name
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#
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cp worm25/WORM\ 25：\ A\ history\ of\ WORM\ in\ 25\ Objects\ \#1：\ Mia\ on\ the\ hand-towel\ dispenser\ \(04.06.24\)\ \[radiowormrotterdam_worm-25-a-history-of-worm-in-25-objects-1-mia-o
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n-the-hand-towel-dispenser-040624\].webm w25mia.webm
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# __
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# .,-;-;-,. /'_\
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# _/_/_/_|_\_\) /
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# '-<_><_><_><_>=/\
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# `/_/====/_/-'\_\
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# "" "" ""
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# NOTE:
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# it may seem pointless to move files around and rename them with short names
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# BUT...
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# coding/working with the commandline requires A LOT OF FOCUS
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# so steps to reduce "cognitive load" like sifting through long lists of confusing filenames
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# that make working on the commandline slower and *harder to read*
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# are really worthwhile!
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#
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# Also when working with digital materials, it's often tempting to try to
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# address an entire collection (in this case all the recordings, and the whole hour of each recording)
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# BUT ...
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# it's really important when testing things out that you focus on a small sample
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# in this way you make experimentation, including the *necessary errors
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# and missteps*, as fluid as possible to stay in the flow,
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# so that you can get through the bugs
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# to the interesting results that will give you the energy
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# and confidence to keep going!
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#
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# so in this case....
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#
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# get something working for a 60 second sample
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# THEN once you know it works...
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# apply it to the whole hour long recording
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# and eventually all the recordsings of the playlist
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# Working with a long file also can take a lot of time when experimenting
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# use ffmpeg to make a 30 second extract
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# -ss is start time, -t duration (duration of final extract)
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# at the same time, convert the wav to mp3 (for the browser)
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ffmpeg -i w25mia.webm -ss 120 -t 60 w25mia60.wav
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# use vosk to transribe, to srt
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# nb: worm25_mia_60wav is an INPUT and needs to already exist
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# worm25_mia_60.srt is an OUTPUT and will be (re)created
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vosk-transcriber -l en-us -i w25mia60.wav -t srt -o w25mia60.srt
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# SRT (SubRip Subtitle) comes from
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# practices of PIRATE CURATION
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# where films would be ripped from DVDs
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# and distributed as video files
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# SRT is then a simple (and small) text format for
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# the missing subtitles, that can then
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# be translated into many languages
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# and distributed separately from the (heavier) video files
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# Also due to the editability and understandability
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# the format was so popular, that it became the
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# basis of the W3C's web standard (web) VTT
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#
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# see also: https://www.opensubtitles.com/
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#
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# The two are nearly the same except
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# the file needs to have a "header" (the first line should be:)
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# WEBVTT
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# And the timecodes use a dot instead of a comma..
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# SO
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# 00:00:00,075 --> 00:00:02,610
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# in SRT becomes in VTT:
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# 00:00:00.075 --> 00:00:02.610
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#
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# let's use a python script to convert from srt to vtt
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scripts/srt2vtt.py w25mia60.srt w25mia60.vtt
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# make an mp3 for the browser
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ffmpeg -i w25mia60.wav w25mia60.mp3
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# adjust vtt.html to point to the mp3 + vtt
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# LOOK AT vtt.html
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# NB: to see captions, we need to use <video> even though we just have <audio>
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#
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# This seesm to work in Firefox but not Chrome/Chromium.
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# NB the video is made 100% width and a fixed (small) height to make the caption size nice
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# BUT...
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# It would be even better to style the captions ourselves and bring them into the page
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# like other HTML content!
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#
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# VTT tracks can also trigger the *oncue* event, which means we can program CUSTOM title behaviors!
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#
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# LOOK AT vtt_basic.html
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# and vtt_custom.html
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