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I am trying to insert custom metadata on metadata change event according to the tutorial example I found somewhere: It works fine only for a few metadata tags like However ID3v2.4 metadata tags set contains much more possible tags, so I am trying to understand why they are not allowed? Could you please help to find a way to provide more ID3v2 tags and values in the output Liquidsoap stream? |
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Replies: 3 comments 18 replies
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Hi, @iSerganov . Yeah,
def metadata.export(m) =
exported_keys = settings.encoder.metadata.export()
list.assoc.filter((fun (k, (_:string)) -> list.mem(k, exported_keys)), m)
endYou can insert whatever metadata you need. Just don't filter it with # here we don't use `metadata.export` — thus all metadata is allowed to pass through.
radio = insert_metadata(radio)
def set_metadata(request)
log.important("Inserting metadata: #{request.query}")
radio.insert_metadata(request.query)
http.response(data="Done.")
end
harbor.http.register.simple("/set_metadata", set_metadata, port=8007, method="GET")
meta = ref([])
radio.on_metadata(fun (m) -> meta := m)
def get_all_meta(_, response) =
response.json(meta())
end
harbor.http.register(port=8007, method="GET", "/metadata", get_all_meta)Now if we do something like [["WTF","3"],["artist","1"],["title","2"]]So basically you have to change |
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Thank you - that works fine! Just wondering how can I propagate this custom metadata further to Icecast? Is that something that can be configured on Liquidsoap side or is it purely Icecast business? |
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This will depend on the format. If we are talking about Lots of web radios try to put everything into this def apply_meta(m) =
title = m["title"]
artist = m["artist"]
album = m["album"]
if artist != "" and title != "" then
[...list.assoc.remove("artist", m), ("title", "#{artist} - #{title} - #{album}")]
else
m
end
endLooks weird. E.g. There is Best approach will be probably to use a dedicated API and a Player. To grab metadata directly from LS and insert it into Player. |
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Makes sense. So Also it looks like I am doing something wrong when trying to insert custom metadata per each track. When I call |
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Not sure about it.
To modify metadata you have to go to I presume you want to add this Then it's much easier to annotate your playlists: radio = playlist(prefix='annotate:isrc="some dynamic code",EncodedBy="Nice Encoder":', "/music/music.m3u8")
meta = ref([])
radio.on_metadata(fun (m) -> meta := m)
def get_all_meta(_, response) =
response.json(meta())
end
harbor.http.register(port=8007, method="GET", "/metadata", get_all_meta)Then if needed you can add |
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Ok, great! I'm sure that with IcecastKH it is also possible. |
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Can you provide me with a small example of the function to change metadata on the fly please? |
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Oh, and another question (sorry, today it seems too many questions :)) Can I do the same with |
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@gAlleb |
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Thanks, @smoralis! |
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It's still not clear to me what the goal is exactly. It's always better to do this beforehand and edit your songs with necessary tags.
|
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# Create `refs`
new_isrc = ref("")
new_EncodedBy = ref("")
api_url = "http://api_url"
# Main function
def set_metadata(_)
# API function with PUT request
def api_put(path, data=null())
full_url = "#{api_url}/#{path}"
log("API #{path} - Sending PUT request to '#{full_url}' with Artist and Title: #{data}")
try
response = http.put(full_url,
headers=[
("Content-Type", "application/json")
],
data=json.stringify(data, compact=true)
)
log("API #{path} - Response (#{response.status_code}): #{response}")
response
catch error do
null()
end
end
def null_list(key, _list)
list.assoc.mem(key, _list) ? list.assoc(key, _list) : ""
end
# We take meta from the source
m = radio.last_metadata() ?? []
artist = null_list("artist", m)
title = null_list("title", m)
# We send Artist - Title
get_more_meta = api_put("meta", { artist = "#{artist}", title = "#{title}" })
if get_more_meta != null() then
try
# Parse response
let json.parse ({isrc, EncodedBy} : {isrc: string, EncodedBy: string}) = "#{get_more_meta}"
# Assign new values
new_isrc := "#{isrc}"
new_EncodedBy := "#{EncodedBy}"
catch err do
log("#{err}")
end
end
end
radio.on_track(set_metadata)
# Append new meta to the stream with values we got in the function above.
def append_meta(_) =
[("isrc", new_isrc()),("EncodedBy", new_EncodedBy())]
end
radio = metadata.map(append_meta, radio)overcomplexity: achieved |
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This seems more or less what I was looking for. So the easiest way is to pre-process all input tracks and set all metadata I need there. Thank you very much! |
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artist - titlevalues or DB of some sort. Then on every new track you can send currentartist - titlevalue to the API and in response getnew meta(taken from an array) which you will then append: