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livebroadcast 在 LiveBroadcasts | YouTube Live Streaming API 的美食出口停車場
The API now supports the ability to mark your live
broadcasts as "made for kids," and the
liveBroadcastresource now contains aproperty that identifies the "made for kids" status of that live broadcast. The YouTube API
Services Terms of Service and Developer Policies were also updated on 10 January 2020. For more
information, please see the revision histories for the
YouTube Live Streaming API Service and the
YouTube API Services Terms of Service.
A
liveBroadcastresource represents an event that will be streamed, via live video, on YouTube.Methods
The API supports the following methods for
listliveBroadcastsresources:Returns a list of YouTube broadcasts that match the API request parameters.
Try it now. insert
Creates a broadcast.
Try it now. update
Updates a broadcast. For example, you could modify the broadcast settings defined in the
liveBroadcastresource'scontentDetailsobject.Try it now. delete
Deletes a broadcast.
Try it now. bind
Binds a YouTube broadcast to a stream or removes an existing binding between a broadcast and a stream. A broadcast can only be bound to one video stream, though a video stream may be bound to more than one broadcast.
Try it now. transition
Changes the status of a YouTube live broadcast and initiates any processes associated with the new status. For example, when you transition a broadcast's status to
testing, YouTube starts to transmit video to that broadcast's monitor stream. Before calling this method, you should confirm that the value of thestatus.streamStatusproperty for the stream bound to your broadcast isactive.Try it now.cuepoint
Inserts a cuepoint into a live broadcast. The cuepoint might trigger an ad break.
Resource representation
The following JSON structure shows the format of a
liveBroadcastsresource:{"kind": "youtube#liveBroadcast",
"etag": etag,
"id": string,
"snippet": {
"publishedAt": datetime,
"channelId": string,
"title": string,
"description": string,
"thumbnails": {
(key): {
"url": string,
"width": unsigned integer,
"height": unsigned integer
}
},
"scheduledStartTime": datetime,
"scheduledEndTime": datetime,
"actualStartTime": datetime,
"actualEndTime": datetime,
"isDefaultBroadcast": boolean,
"liveChatId": string
},
"status": {
"lifeCycleStatus": string,
"privacyStatus": string,
"recordingStatus": string,
"madeForKids": string,
"selfDeclaredMadeForKids": string,
},
"contentDetails": {
"boundStreamId": string,
"boundStreamLastUpdateTimeMs": datetime,
"monitorStream": {
"enableMonitorStream": boolean,
"broadcastStreamDelayMs": unsigned integer,
"embedHtml": string
},
"enableEmbed": boolean,
"enableDvr": boolean,
"recordFromStart": boolean,
"enableClosedCaptions": boolean,
"closedCaptionsType": string,
"projection": string,
"enableLowLatency": boolean,
"latencyPreference": boolean,
"enableAutoStart": boolean,
"enableAutoStop": boolean
},
"statistics": {
"totalChatCount": unsigned long
},
"monetizationDetails": {
"cuepointSchedule": {
"enabled": boolean,
"pauseAdsUntil": datetime,
"scheduleStrategy": string,
"repeatIntervalSecs": unsigned integer,
}
}
}
}
Properties
The following table defines the properties that appear in this resource:
Properties
kindstringIdentifies the API resource's type. The value will be
youtube#liveBroadcast.etagetagThe Etag of this resource.
idstringThe ID that YouTube assigns to uniquely identify the broadcast.
snippetobjectThe
snippetobject contains basic details about the event, including its title, description, start time, and end time.snippet.publishedAtdatetimeThe date and time that the broadcast was added to YouTube's live broadcast schedule. The value is specified in ISO 8601 (
YYYY-MM-DDThh:mm:ss.sZ) format.snippet.channelIdstringThe ID that YouTube uses to uniquely identify the channel that is publishing the broadcast.
snippet.titlestringThe broadcast's title. Note that the broadcast represents exactly one YouTube video. You can set this field by modifying the broadcast resource or by setting the
titlefield of the corresponding video resource.snippet.descriptionstringThe broadcast's description. As with the
title, you can set this field by modifying the broadcast resource or by setting thedescriptionfield of the corresponding video resource.snippet.thumbnailsobjectA map of thumbnail images associated with the broadcast. For each nested object in this object, the key is the name of the thumbnail image, and the value is an object that contains other information about the thumbnail.
snippet.thumbnails.(key)objectValid key values are:
default– The default thumbnail image. The default thumbnail for a video – or a resource that refers to a video, such as a playlist item or search result – is 120px wide and 90px tall. The default thumbnail for a channel is 88px wide and 88px tall.medium– A higher resolution version of the thumbnail image. For a video (or a resource that refers to a video), this image is 320px wide and 180px tall. For a channel, this image is 240px wide and 240px tall.high– A high resolution version of the thumbnail image. For a video (or a resource that refers to a video), this image is 480px wide and 360px tall. For a channel, this image is 800px wide and 800px tall.snippet.thumbnails.(key).urlstringThe image's URL.
snippet.thumbnails.(key).widthunsigned integerThe image's width.
snippet.thumbnails.(key).heightunsigned integerThe image's height.
snippet.scheduledStartTimedatetimeThe date and time that the broadcast is scheduled to start. The value is specified in ISO 8601 (
YYYY-MM-DDThh:mm:ss.sZ) format. Creator Studio supports the ability to create a broadcast without scheduling a start time. In this case, the broadcast starts whenever the channel owner starts streaming. For these broadcasts, thedatetimevalue corresponds to UNIX time zero, and this value cannot be changed via the API or in Creator Studio.snippet.scheduledEndTimedatetimeThe date and time that the broadcast is scheduled to end. The value is specified in ISO 8601 (
YYYY-MM-DDThh:mm:ss.sZ) format. If aliveBroadcastresource does not specify a value for this property, then the broadcast is scheduled to continue indefinitely. Similarly, if you do not specify a value for this property, then YouTube treats the broadcast as if it will go on indefinitely.snippet.actualStartTimedatetimeThe date and time that the broadcast actually started. This information is only available once the broadcast's state is
live. The value is specified in ISO 8601 (YYYY-MM-DDThh:mm:ss.sZ) format.snippet.actualEndTimedatetimeThe date and time that the broadcast actually ended. This information is only available once the broadcast's state is
complete. The value is specified in ISO 8601 (YYYY-MM-DDThh:mm:ss.sZ) format.snippet.isDefaultBroadcastbooleanThis property will be deprecated on or after September 1, 2020. At that time, YouTube will
stop creating a default stream and default broadcast when a channel is enabled for live
streaming. Please see the deprecation
announcement for more details.
This property indicates whether this broadcast is the default broadcast.
How default broadcasts work
When a YouTube channel is enabled for live streaming, YouTube creates a default stream and a default broadcast for the channel. The stream defines how the channel owner sends live video to YouTube, and the broadcast is how viewers can see the default stream. A channel owner can use the
liveStreams.listandliveBroadcasts.listmethods to identify these resources.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.
After the conversion is complete, the video is included in the channel's list of uploaded videos. The video is not available immediately after the broadcast concludes, and the length of the delay is related to the actual length of the broadcast.
snippet.liveChatIdstringThe ID for the broadcast's YouTube live chat. With this ID, you can use the
liveChatMessageresource's methods to retrieve, insert, or delete chat messages. You can also add or remove chat moderators, ban users from participating in live chats, or remove existing bans.statusobjectThe
statusobject contains information about the event's status.status.lifeCycleStatusstringThe broadcast's status. The status can be updated using the API's
liveBroadcasts.transitionmethod.Valid values for this property are:
complete– The broadcast is finished.created– The broadcast has incomplete settings, so it is not ready to transition to aliveortestingstatus, but it has been created and is otherwise valid.live– The broadcast is active.liveStarting– The broadcast is in the process of transitioning tolivestatus.ready– The broadcast settings are complete and the broadcast can transition to aliveortestingstatus.revoked– This broadcast was removed by an admin action.testStarting– The broadcast is in the process of transitioning totestingstatus.testing– The broadcast is only visible to the partner.status.privacyStatusstringThe broadcast's privacy status. Note that the broadcast represents exactly one YouTube video, so the privacy settings are identical to those supported for videos. In addition, you can set this field by modifying the broadcast resource or by setting the
privacyStatusfield of the corresponding video resource.Valid values for this property are:
privatepublicunlistedstatus.recordingStatusstringThe broadcast's recording status.
Valid values for this property are:
notRecordingrecordedrecordingstatus.madeForKidsbooleanThis value indicates whether the broadcast is designated as child-directed. This property
value is read-only.
status.selfDeclaredMadeForKidsbooleanIn a
liveBroadcasts.insertrequest, this property allows the channel owner to designate the broadcast as being
child-directed. In a
liveBroadcasts.listrequest, the property value is only returned if the channel owner authorized the API
request.
contentDetailsobjectThe
contentDetailsobject contains information about the event's video content, such as whether the content can be shown in an embedded video player or if it will be archived and therefore available for viewing after the event has concluded.contentDetails.boundStreamIdstringThis value uniquely identifies the
live streambound to the broadcast.contentDetails.boundStreamLastUpdateTimeMsdatetimeThe date and time that the live stream referenced by
boundStreamIdwas last updated.contentDetails.monitorStreamobjectThe
monitorStreamobject contains information about the monitor stream, which the broadcaster can use to review the event content before the broadcast stream is shown publicly.contentDetails.monitorStream.enableMonitorStreambooleanThis value determines whether the monitor stream is enabled for the broadcast. If the monitor stream is enabled, then YouTube will broadcast the event content on a special stream intended only for the broadcaster's consumption. The broadcaster can use the stream to review the event content and also to identify the optimal times to insert cuepoints.
You need to set this value to
trueif you intend to have atestingstage for your broadcast or if you want to have a broadcast delay for your event. In addition, if this property's value istrue, then you must transition your broadcast to thetestingstate before you can transition it to thelivestate. (If the property's value isfalse, your broadcast cannot have atestingstage, so you can transition the broadcast directly to thelivestate.)When you
update a broadcast, this property must be set if your API request includes thecontentDetailspart in thepartparameter value. However, when youinsert a broadcast, the property is optional and has a default value oftrue.Important: This property cannot be updated once the broadcast is in the
testingorlivestate.contentDetails.monitorStream.broadcastStreamDelayMsunsigned integerIf you have set the
enableMonitorStreamproperty totrue, then this property determines the length of the live broadcast delay.When you
update a broadcast, this property must be set if your API request includes thecontentDetailspart in thepartparameter value. However, when youinsert a broadcast, the property is optional and has a default value of0. This value indicates that the broadcast does not have a broadcast delay. Note: This property cannot be updated once the broadcast is in thetestingorlivestate.contentDetails.monitorStream.embedHtmlstringHTML code that embeds a player that plays the monitor stream.
contentDetails.enableEmbedbooleanThis setting indicates whether the broadcast video can be played in an embedded player. If you choose to archive the video (using the
enableArchiveproperty), this setting will also apply to the archived video.When you
update a broadcast, this property must be set if your API request includes thecontentDetailspart in thepartparameter value. However, when youinsert a broadcast, the property is optional and has a default value oftrue.Note: This property cannot be updated once the broadcast is in the
testingorlivestate.contentDetails.enableDvrbooleanThis setting determines whether viewers can access DVR controls while watching the video. DVR controls enable the viewer to control the video playback experience by pausing, rewinding, or fast forwarding content. The default value for this property is
true.When you
update a broadcast, this property must be set if your API request includes thecontentDetailspart in thepartparameter value. However, when youinsert a broadcast, the property is optional and has a default value oftrue.Important: You must set the value to
trueand also set theenableArchiveproperty's value totrueif you want to make playback available immediately after the broadcast ends. In addition, this property cannot be updated once the broadcast is in thetestingorlivestate.contentDetails.recordFromStartbooleanThis setting indicates whether YouTube will automatically start recording the broadcast after the event's status changes to live.
This property's default value is
true, and it can only be set tofalseif the broadcasting channel is allowed to disable recordings for live broadcasts.If your channel does not have permission to disable recordings, and you attempt to insert a broadcast with the
recordFromStartproperty set tofalse, the API will return aForbiddenerror. In addition, if your channel does not have that permission and you attempt to update a broadcast to set therecordFromStartproperty tofalse, the API will return amodificationNotAllowederror.When you
update a broadcast, this property must be set if your API request includes thecontentDetailspart in thepartparameter value. However, when youinsert a broadcast, the property is optional and has a default value oftrue.Important: You must also set the
enableDvrproperty's value totrueif you want the playback to be available immediately after the broadcast ends. If you set this property's value totruebut do not also set theenableDvrproperty totrue, there may be a delay of around one day before the archived video will be available for playback.Note: This property cannot be updated once the broadcast is in the
testingorlivestate.contentDetails.enableClosedCaptionsbooleanThis property has been deprecated as of December 17, 2015. Use the
contentDetails.closedCaptionsTypeproperty instead.This setting indicates whether HTTP POST closed captioning is enabled for this broadcast. For API clients that are already using this property:Setting the property value to
trueis equivalent to setting thecontentDetails.closedCaptionsTypeproperty toclosedCaptionsHttpPost.Setting the property value tofalseis equivalent to setting thecontentDetails.closedCaptionsTypeproperty toclosedCaptionsDisabled.contentDetails.closedCaptionsTypestringNote: This property replaces the
contentDetails.enableClosedCaptionsproperty.This property indicates whether closed captioning is enabled for your broadcast and, if so, what type of closed captions you are providing:
closedCaptionsDisabled: Closed captions are disabled for the live broadcast.closedCaptionsHttpPost: You will send captions, via HTTP POST, to an ingestion URL associated with your live stream.closedCaptionsEmbedded: Captions will be encoded in the video stream using EIA-608 and/or CEA-708 formats.contentDetails.projectionstringThe projection format of this broadcast. The property's default value is
rectangular.Valid values for this property are:
360rectangularcontentDetails.enableLowLatencybooleanIndicates whether this broadcast should be encoded for low-latency streaming. A low-latency stream can reduce the amount of time it takes for video to be visible to users watching a broadcast, though it can also impact the resolution for viewers of the stream.
contentDetails.latencyPreferencestringIndicates which latency setting to use for this broadcast. This property may be used instead of
enableLowLatency, which does not supportultraLow.A low-latency stream can reduce the amount of time it takes for video to be visible to users watching a broadcast, though it can also affect the smoothness of playback.
An ultra-low-latency stream further reduces the time it takes for video to be visible to viewers, making interaction with viewers easier, but ultra-low latency does not support closed captions, or resolutions higher than 1080p.
Valid values for this property are:
normallowultraLowcontentDetails.enableAutoStartbooleanIndicates whether this broadcast should start automatically when you start streaming video on the bound
live stream.contentDetails.enableAutoStopbooleanIndicates whether this broadcast should stop automatically around one minute after the channel
owner stops streaming video on the bound video stream.
statisticsobjectThe
statisticsobject contains statistics related to a live broadcast. The values for these statistics can change during the broadcast and can only be retrieved while the broadcast is live.statistics.totalChatCountunsigned longThe total number of live chat messages associated with the broadcast. The property and its value are present if the broadcast is visible to the user, has the live chat feature enabled, and has at least one message. Note that this property will not specify a value after the broadcast ends. So, this property would not identify the number of chat messages for an archived video of a completed live broadcast.
monetizationDetailsobjectThe
monetizationDetailsobject contains information about the stream'smonetization details, such as if the ads automator is turned on or if midroll ads insertion is
delayed.
Important: To enable automated ads for a video, the channel must
be eligible to monetize videos. The broadcast's monetization setting, such as turning on
monetization or ads automator (i.e. "Let YouTube insert mid-rolls for you" or "Schedule
mid-roll ads at a set frequency"), can be set in YouTube Studio when creating the broadcast
or editing the broadcast during live.
monetizationDetails.cuepointScheduleobjectThe
cuepointScheduleobject specifies the ad automation settings for thebroadcast.
monetizationDetails.cuepointSchedule.enabledbooleanThis value determines whether ads are automatically inserted in the broadcast. If the value
is
true, YouTube will automatically insert midroll ads into the broadcast. Theschedule for running ads will be determined by the value of the other fields in the
monetizationDetails.cuepointScheduleobject.monetizationDetails.cuepointSchedule.pauseAdsUntildatetimeThis value specifies that YouTube should not insert midroll ads into the broadcast until the
specified date and time. The value is specified in
ISO 8601 (YYYY-MM-DDThh:mm:ss.sZ)
format. The value must be set to a future datetime to pause ads; the field value can also be set to a
near future datetime to unpause ads when time passes.
monetizationDetails.cuepointSchedule.scheduleStrategystringThis value specifies the strategy that YouTube should follow for scheduling cuepoints. Valid
values are:
CONCURRENT: Cuepoints are scheduled at the same time for all viewersNON_CONCURRENT: Cuepoints are scheduled at different times for differentviewers. This approach enables ads to be shown at an increased rate that allows viewers to
receive cuepoints when eligible.
monetizationDetails.cuepointSchedule.repeatIntervalSecsunsigned integerThis value specifies the interval, in seconds, between automatic ad insertion during a
broadcast. For example, if the value is
300, YouTube can insert midroll ad cuepoints atfive minute intervals.
Note that the value specifies the time between the
start of successive cuepoints. That is, the interval is not measured from the end of one
cuepoint to the start of the next.
... <看更多>
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