YouTube channel has no default live broadcast - youtube-api

Question

A small percentage of our users don't seem to have a default live broadcast on YouTube even though live streaming is enabled on their channel.
Here's the query I'm using:
youtube.liveBroadcasts
.list({
part: 'snippet,contentDetails,status',
mine: true,
broadcastType: 'persistent',
})
Here's a normal response:
{ kind: 'youtube#liveBroadcastListResponse',
etag: '"XI7nbFXulYBIpL0ayR_gDh3eu1k/tnMgqhFvImsLcGAkkJ86gMVeu7o"',
pageInfo: { totalResults: 0, resultsPerPage: 5 },
items:
[ { kind: 'youtube#liveBroadcast',
etag: '"XI7nbFXulYBIpL0ayR_gDh3eu1k/FqKww8uAZT-v7cY4LAc70S74LZE"',
id: 'jW9y9FCovHs',
snippet: [Object],
status: [Object],
contentDetails: [Object] } ] }
But for some channels, it returns an item with no data:
{ kind: 'youtube#liveBroadcastListResponse',
etag: '"XI7nbFXulYBIpL0ayR_gDh3eu1k/6A_Pgj2FJo4w0Hg6io_OE8jCrzY"',
pageInfo: { totalResults: 0, resultsPerPage: 5 },
items:
[ { kind: 'youtube#liveBroadcast',
etag: '"XI7nbFXulYBIpL0ayR_gDh3eu1k/vyGp6PvFo4RvsFtPoIWeCReyIC8"' } ] }
These users will often have other past live broadcast, but no default.
The snippet.isDefaultBroadcast section in the docs says that each channel with live streaming enabled should have a default broadcast. Any ideas? Is there something different about certain channels that would cause this?

Answer 1

You can read the documentation about how default broadcast work. It says that when a channel starts streaming video to its default stream, the video is visible on the channel's default broadcast. When the stream ends, YouTube converts the completed broadcast to a YouTube video and assigns the video a YouTube video ID. I think this will only modify by the owner of the channel.