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36 lines
1.3 KiB
Markdown
36 lines
1.3 KiB
Markdown
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NIP-61
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======
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Danmaku
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-------
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`draft` `optional`
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This NIP defines a new kind of event, `2333`, for danmaku.
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Danmaku (弾幕 だんまく; 弹幕; literally translated as "bullet curtain" and figuratively as "barrage") is a subtitle system in online video platforms that originates from Japan and popularised in Mainland China. Such system allows user to post moving comments onto a playing video that are synchronized to the video timeline. The comments are typically presented as “shooting” across the screen, resembling a barrage.
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### Format
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The format uses a regular event kind `2333`.
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The `.content` of these events is the content of the danmaku comment.
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The list of tags are as follows:
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* `i` (required) universally unique identifier of the video. The format is `<platform (lowercase)>:<identity>` where `<platform>` is the platform of the video and `<identity>` is the unique identifier of the video on that platform. For example, a YouTube video with the identifier `aA-jiiepOrE` would have the identifier `youtube:aA-jiiepOrE`.
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* `time` (required) the time of the video when the danmaku comment is sent in seconds.
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```jsonc
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{
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"id": "<...>",
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"pubkey": "<...>",
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"kind": 2333,
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"tags": [
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["i", "youtube:aA-jiiepOrE"],
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["time", "3.018597"]
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],
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"content": "Hello Nostr!",
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"sig": "<...>",
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"created_at": 1713368851
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}
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```
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