- 1 Free Culture
- 2 12/05
- 3 19/05 Caretaker week
- 4 21/05 Caretakers process
- 5 26/05 RADIO PROTOCOLS / METADATA / STREAMING TEXT
- 6 02/06 New metadata, live player
- 7 09/06
- 8 17/06 Dub music
Free culture, Cultural diffusion, Cultural appropriation
Open source, free- used words
Putting forward the idea that free circulation of knowledge is important for democracy, culture… Free circulation of knowledge that people can build on. His references: academic- building on top on existing culture, remix culture- combination of existing works, piracy- in the positive not criminal way. Starts Creation Commons- needs a change in copyright law that says that whatever you create is your own intellectual property. You can license your work but even if you want to give up ownership the law doesn’t allows you. Everything you will produce will belong to you whether you like it or not. Activists tried to resist this like radical software. Resist the idea of copyright by putting the K (the sign instead of the copyright C. The SI’s Publication- put a statement in the beginning of the publication that anybody can use this. Copyleft- the idea of exchanging work cancelling intellectual property. Artist that did artwork/writing resisting copyright, now are under copyright of museums, cities, so on. Lessig tried to change the law. Creative commons license- usually there is a doc that you would create when you are an artist and you want your work to be used in some industries. The Creative Commons license make use of the law to override it and its a proper publishing license. Richard Stallman- founder of Free Software, coined the term, wrote the first free software license. Starts with Unix history- when computer were developed, were you wanted to solve a question you will have to configure different machines and you will get an answer using lightbulbs. Back then you didn’t have an operating systems, it was all hardware (each module did a different function). Then a computer was a job, most of them were women (they were educated but didn’t get the jobs man got). Software became literature, a cultural expression therefor can be copy rated. IBM- software maker. Now you have separation between hardware and software, computer is not a job anymore. Unix started as a research project. The project was good and they wanted to share it with each other. At that time it was niche and everybody shared despite copyright laws. C was developed wit unix- C translate English into machine code. The compiler transforms the c code to machine code. Stallman hated Unix. He said- software was circulating freely and at some point it stopped being free. He is a part of academic hackers that benefited from it being free. They built on top of existing software. He developed his version of Emacs (an editor used by developers). His idea of hacker community of sharing software was in danger. He created a license.
When you distribute your work you need to attach a license to allow other people to use or change it.
Different names for this licenses- Free culture, Creative Commons, copyfree, copyleft, open content.
was used many years ago (Malard). Artists put copyleft on their work to say “fuck copyright”. When Stallman was setting his license a hacker friend send him the copyleft symbol and he thought it is very cool. Nowadays copyleft means- if you modify something with copyleft you need to publish the modification as well underneath the same copyleft license. In the legal term is very technical, it’s not even a license. It a property of a free open source license. This makes the people to contribute more free software.
you don’t need to make public the modifications you made.
In the 90’s when copyleft started to be used a lot in artists communities but it was miss-understood- it was meant to say “fuck you copyright” but actually it enforce the redistribution of one source software. ￼
was used to share course curriculum, was used by university professors. They tried to form a body of work that will exist outside the university and all the rules about this being shared. They said: why shouldn’t we share and all contribute to the same software together. It was an engineering approach.
Us vs. Them
in mid 90’s explosion of definition for copyleft- a lot of groups established groups and tons of licences were being made. People made a strong connection between the sharing of work towards making deep changes in society. This allowed cultural appropriation- every group seen a different thing in copyleft. It was a mess, but a good mess that gave a lot of people a voice for individuals and communities.
In the mid 2000’s Lawrence Lessig, an American constitutional lawyer, that was worried about authoritarian fractures in Eastern Europe (like communism). He was worried that this will happen in the web. He wrote a book making connection between rules and coding. He was influenced by ideas that said that like environmental activism, the web should have some kind of activism. That is how Creative Commons was created- were inspired by the boom in the 90’s but they were arrogant and said that people shouldn’t write their own licences, because you are not a lawyer, we are lawyers. They don’t acknowledge most software licenses and ignored any license that can stand agains them. All of the major activist groups in the US back then started supporting them. They were very good at PR, embraced unix culture as an example of why they are needed and used the concert about the future of the internet. They took over pretty much everything and benefited from the underground net culture. It was not easy to understand what was their ideology. The mid 90’s licenses were pretty clear about what was free open source licensing meant for them. Creative Commons tried to make everyone happy with the McDonalds approach- they offered different menus that were tailored for different need- non-commercial.
Sharelike their kind of copyleft when you have to share your contribution and so on… you can create Frankenstein licenses for free. But the underlined politics was not clear, so they were criticised a lot. They were promoting ideas of freedom but were not completely free.
There was no definition for free culture so people tried to make a definition that will correlate with free software definition. They did it on wiki. This defined what considered as a free culture license (activists, artist, chain invitation system, very US based). Creative Commons was forced to use this. They wanted to be this license for everyone. These is two dominant voices in this landscape each want their voice heard (maybe 3 including Stallman). Most US technology platforms is now licensing only through Creative Commons because they are lobbing to be everywhere.
While everything was happening Ted something came up with Trust Copyright- instead of leaving to the human the responsibility of licensing, it can be solved through software, in the browser level. He is pretty anti copyleft because it’s a lot of tiering paperwork and this can be solved by software.
In this special issues we will experiment in using readymade, opensource software.
- Liquidsoap - broadcasting software+ language.
When trying to put a script together you should write one line at a time for debuging.
This command shows file that are executable (like .sh, .py, liq...) marked in green.
19/05 Caretaker week
Tmux- shared terminal sessions
create new tmux group:
tmux -S directory/group name new -s group name
ex: tmux -S /tmp/radio new -s radio
This creates a new tmux group session in the folder /tmp.
Makes group public:
chgrp publicweb /directory/group name
ex: chgrp publicweb /tmp/radio
tmux -S /directory/group name attach -t group name
Convert audio files
ffmpeg- audio converter
Installing the software:
brew install ffmpeg
ffmpeg -i INPUT.filetype OUTPUT.filetype
We have to use the -i to mark that this file exist, so ffmpeg won't try to create one.
ex: ffmpeg -i myfile.mpe myfile.ogg
Converts the file from mp3 to ogg.
21/05 Caretakers process
Making the playlist
1] Open a new directory on sandbox in the radio directory for this week's broadcast
cd /var/www/html/radio mkdir 12.number of broadcast ex: mkdir 12.2
2] All the files should be uploaded to the new directory and converted to ogg. format
scp file.mp3 hub.sandbox:/var/www/html/radio/current broadcast directory
ffmpeg -i filename.typeoffile filename.ogg
vorbiscomment -t "title=track_broadcast number_track number" -t "file=file name.ogg" -t "authors=name" -t "episode=12.broadcast number" -w file name.ogg
ex: vorbiscomment -t "title=track_2_1" -t "file=Signals_and_messages_1.0.ogg" -t "authors=mark, damla" -t "episode=12.2" -w Signals_and_messages_1.0.ogg
4] Make the playlist
ls *.ogg>>name of playlist.m3u
The playlist is saved as a m3u format.
The name should be unified with name of directory (12.number of broadcast)
ex: ls *.ogg>>12.2.m3u
4] Edit the playlist- you can arrange the order of the playlist
nano name of playlist.m3u
In the editor use ctrl+k to cut a line and ctrl+u to paste.
Playlist is ready for broadcast
1] Copy the broadcasting liquidsoap script from last broadcast to current broadcast directory.
scp /var/www/html/radio/last broadcast directory/last broadcast script.liq .
The dot in the end means it will be copied to your current location (should be this weeks broadcast directory)
ex: scp /var/www/html/radio/12.1/12.1.liq .
2] Rename the script to have the name of this week's broadcast
ex: mv 12.1.liq 12.2.liq
3] In the script, update the playlist name to the current playlist
ex: nano 12.2.liq
4] Set fallback track - the fallback script should run in a tmux group for the case that the broadcast is not running.
The script live_interrupt.liq is in this directory
We are currently running the script in a tmux group called radio
Attach to group:
tmux -S /tmp/radio attach -t radio
Run the script in the group
liquidsoap -v live_interrupt.liq
Right now the we are using brownnoise.mp3 for the fallback, you can see it in the script
#!/usr/bin/liquidsoap -v set("log.file",false) # set("log.file.path","/tmp/<script>.log") set("log.stdout",true) %include "/srv/radio/passwords.liq" # Add the ability to relay live shows radio = fallback(track_sensitive=false, [input.http("http://echo.lurk.org:999/radioimplicancies_live.ogg"), single("brownnoise.mp3")]) radio = mksafe(radio) output.icecast(%vorbis, host = ICECAST_SERVER_HOST, port = ICECAST_SERVER_PORT, password = ICECAST_SERVER_PASSWORD, mount = "radioimplicancies.ogg", radio) # out(liveorstatic)
5] Create a tmux group that you will run the script where we will run the script.
tmux -S /tmp/group name new -s group name
Running the script in the tmux group allows it to run in the back, not directly from a personal terminal.
Make group public
chgrp publicweb /tmp/group name
6] Run the script in the current broadcast directory (if you are not there, cd to it)
liquidsoap -v 12.2.liq
The broadcast is now running and can be heard in the website
- You can become the radio user
You will need to enter the password
- To view all the processes that are currently running on sandbox use:
To view only liquidsoap processes:
ps aux | grep liquidsoap
- Stop a process by using:
kill number of process
- Detach from tmux session using ctrl+B, let go and then D.
This process will make a file of the broadcast and use the metadata to track indicate while playing the file on the website.
1] Copy archiving script from last week broadcast to current directory
ex: scp /var/www/html/radio/12.2/archive_12.2.liq
2] Copy ogginfo to srt script to current directory
ex: scp /var/www/html/radio/12.2/ogginfo-to-srt.py
3] Rename archive script
ex: mv archive_12.2.liq archive_12.3.liq
4] Edit script to current week playlist
ex: nano archive_12.3.liq
Adjust the output .ogg file to the name of the script to keep consistency
5] Run archive script (this process will play the broadcast again so it will take the length of the broadcast to finish)
liquidsoap -v archive_12.3.liq
When it's done you will see the .ogg file of the archived playlist in your directory (in our example archive_12.3.ogg).
You can use ogginfo to see if all the tracks have the metadata. This metadata is important.
ex: ogginfo archive_12.3.ogg
6] This chain of commands will make a .vtt file from our .ogg file. This file will contain our metadata that can later be used.
ogginfo archive_12.3.ogg | python3 ogginfo-to-srt.py --json
ogginfo archive_12.3.ogg | python3 ogginfo-to-srt.py
ogginfo archive_12.3.ogg | python3 ogginfo-to-srt.py --vtt
ogginfo archive_12.3.ogg | python3 ogginfo-to-srt.py --vtt > archive_12.3.vtt
Now the .vtt file is generated.
7] Convert playlist .ogg file to .mp3 (it will be used in the website and will be more stable)
ex: ffmpeg -i archive_12.2.ogg archive_12.2.mp3
8] Copy .mp3 and .vtt files from sandbox to the /12 website directory on the git (you can use scp if you have the repository cloned or your machine or use the online interface of gitea).
9] In index.html, alter the <audio> tag to contain the archived .mp3 file and the .vtt file
<audio controls> <source src="archive_12.2.mp3" type="audio/mp3"> <track default kind="captions" srclang="en" src="archive_12.2.vtt"/> </audio>
10] Give the "li" (list) components an id that correlates with the "title" in the metadata (you can use ogginfo on the .ogg archived playlist file to check again). You can see how it was done in the previous broadcasts.
Right you can see that the current track that is playing is marked in the broadcast content table. It uses the class "now_playing" but a new script can be written that uses a different one if you like. If you want to make a different script, that will use a different class, you should copy the current one and them alter.
Result: in the website you can play the archives broadcast (this is not a live stream anymore) and the current track that is playing is marked in the table of contant.
26/05 RADIO PROTOCOLS / METADATA / STREAMING TEXT
Protocols- languages between severs- liquidsoap is talking to icecast
In liquidsoap- We removed the normalize line function
vorbitcomment -l gives the metadata list
Tail- command that looks at the end of the file
Head- shows beginning
Tail -f show the end with the the lines that are added
Ex: tail -f 12.3.log | pipeserver.py --host 0.0.0.0
02/06 New metadata, live player
HTTPS - companies gives certificates, as a website owner you need to keep it up to date. Its a policing major to make sites more secure. Certificates can be revoked
Pipsever- outputs a webpage using websocket
Adding the metadata
We realised that "title" and "artist" are the 2 parameters that liquidsoap recognise for sure.
This command will generate the .meta file
vorbiscomment -l speech01.ogg > speech01.meta
We made corresponding .meta files for each track that contains this info:
nano speech01.meta artist= track=
In the artist we put links for videos and images so we can use them during the broadcast (with the liveplayer.js in the git)
Then we attach it to the ogg file
vorbiscomment -c speech01.meta -w speech01.ogg
What "went wrong" last broadcast?
- Videos/images didn't load next to the corresponding track
What happend? Combination of HTTPS and HTTP request. The images and the videos were not "secure" (was on pzwart1 which doesn't have the right licensing) Solution: move the docs to a secure directory like our git.
Using relative link- you can also make the link "site relative", for example just use the name of the folder and the name of the file like: 12.4/image.jpg
- Last track didn't play
17/06 Dub music
Music history of Jamaica
The circle between the colonised and the colonising
A rebellious action
Cultural appropriation, colonial byproduct. Started in 1910 and picked in the 50’s. The lyrics was about daily live, relationships, social issues (being poor) Some of it started to get recorded for Europe and US.
Charles Brown - Black Night
The Skatalites - Guns Of Navarone References to a cheesy 70’s American war movie. Western culture was dominant in Jamaica, so the tracks a kot of the time followed some movie that just came out.
Rudeboys- kind of gandgsters, dressed like American gangsters.
A match bigger picture started to appear with the role of the studios-
A publicising system that left musicians with no actual cultural property
Shift of plan- the sound systems will always play the dub version of the track, without the lyrics, and the dj/selector will vocalise above it If you want the vocal version you have to buy the vinyl They created an addiction- they made the dub not in goos quality so people need to buy it many times. It became pretty exploitative profitable thing. Then the name of the creators disappeared, no copyright laws. The band culture was gone- they recorder separately. There were so many musician in Jamaica so the payment was super low. Bon Marley hated dub be cause he knew what was behind it. Dub was reggee’s enemy because the lyrics disappeared. So at some point dub was forbidden in Jamaica for destroying the musical landscape of Jamaica.
This story relates to Free culture. We talk about the appropriation of public domain and we fall to they same appropriation that happend with dub. In free culture, the ones that make name for themselves are the platform owners.