ListMediaLiveChannels-Intelligent Media Services(IMS)-阿里云帮助中心

Queries MediaLive channels.

Operation description

QPS limit

This operation can be called up to 50 times per second for each Alibaba Cloud account. Requests that exceed this limit are dropped and you may experience service interruptions. We recommend that you take note of this limit when you call this operation.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ice:ListMediaLiveChannels

list

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
MaxResults	integer	No	The number of entries per page. Valid values: 1 to 100. Default value: If you do not specify this parameter or if you set a value smaller than 10, the default value is 10. If you set a value greater than 100, the default value is 100.	10
Skip	integer	No	The number of entries to be skipped in the query. If the number of entries you attempt to skip exceeds the number of entries that meet the condition, an empty list is returned.	20
NextToken	string	No	The pagination token that is used in the next request to retrieve a new page of results. You do not need to specify this parameter for the first request. You must specify the token that is obtained from the previous query as the value of NextToken.	caeba0bbb2be03f84eb48b699f0a4883
SortOrder	string	No	The sorting order of the channels by creation time. Default value: asc. Valid values: desc and asc. asc indicates the ascending order, and desc indicates the descending order.	desc
Keyword	string	No	The keyword of the query. You can perform a fuzzy search on channel ID or name.	123
States	string	No	The state of channels you want to query. You can separate multiple states with commas (,) in a JSON array.	["IDLE","RUNNING"]

Response elements

Element	Type	Description	Example
	object	Schema of Response
RequestId	string	The ID of the request.	****11-DB8D-4A9A-875B-275798****
Channels	array<object>	The channels.
	array<object>
ChannelId	string	The ID of the channel.	SEGK5KA6KYKAWQQH
Name	string	The name of the channel.	mych
State	string	The state of the channel. Valid values: IDLE, STARTING, RUNNING, RECOVERING, and STOPPING.	IDLE
InputAttachments	array<object>	The inputs associated with the channel.
	array<object>
InputId	string	The ID of the input.	SEGK5KA6KYKAWQQH
InputName	string	The name of the input.	myinput
LanguageName	string	The name of the language.	eng
AudioSelectors	array<object>	The audio selectors.
	array<object>
Name	string	The name of the audio selector.	myselector
AudioLanguageSelection	object	The audio language selection.
LanguageCode	string	A three-letter ISO 639-2 language code from within an audio source.	eng
AudioPidSelection	object	The audio PID selection.
Pid	integer	A PID from within a source.	123
AudioTrackSelection	array<object>	The audio track selection.
	object
TrackId	integer	The track ID from within a source.	1
OutputGroups	array<object>	The output groups.
	array<object>
Name	string	The name of the output group.	group1
Type	string	The output group type.	MediaPackage
Outputs	array<object>	The outputs in the output group.
	array<object>
Name	string	The name of the output.	output1
MediaType	integer	The media type of the output.	0
MediaPackageOutputSetting	object	The settings of the output delivered to MediaPackage.
NameModifier	string	The manifest name modifier. The child manifests include this modifier in their M3U8 file names.	480p
AudioGroupId	string	The manifest audio group ID.	audiogroup
VideoSettingName	string	The name of the referenced VideoSettings.	myVideo1
AudioSettingNames	array	The referenced AudioSettings.
	string	The name of the referenced AudioSettings.	myAudio1
MediaPackageGroupSetting	object	The MediaPackage destination.
GroupName	string	GroupName in MediaPackage.	myPackageGroup
ChannelName	string	ChannelName in MediaPackage.	myPackageChannel
MonitorUrl	string	The URL for monitoring the output group. The parameter is returned only when the output gourp type is MediaPackage.	rtmp://xxx
AudioSettings	array<object>	The audio settings.
	array<object>
Name	string	The name of the audio settings.	zhuanfengzhuang
AudioSelectorName	string	The name of the audio selector.	myselector
LanguageCode	string	A three-letter ISO 639-2 language code.	eng
LanguageName	string	The name of the language.	English
AudioCodec	string	The audio codec.	aac
AudioCodecSetting	object	The audio encoding settings.
Profile	string	The audio codec profile.	AAC-LOW
Bitrate	integer	The audio bitrate. Unit: bit/s.	200000
SampleRate	integer	The audio sample rate. Unit: Hz.	44100
VideoSettings	array<object>	The video settings.
	array<object>
Name	string	The name of the video settings.	video1
Width	integer	The width of the video in pixels.	1280
Height	integer	The height of the video in pixels.	720
VideoCodec	string	The video codec.	H264
VideoCodecSetting	object	The video encoding settings.
Rate	object	The video encoding rate.
Bitrate	integer	The video bitrate. Unit: bit/s.	2500000
RateControlMode	string	The bitrate control mode.	ABR
MaxBitrate	integer	The maximum bitrate. Unit: bit/s.	6000000
BufferSize	integer	The video buffer size. Unit: bit/s.	6000000
Framerate	object	The frame rate.
FramerateControl	string	The frame rate mode.	SPECIFIED
FramerateNumerator	integer	The numerator of the fixed frame rate.	25
FramerateDenominator	integer	The denominator of the fixed frame rate.	1
Gop	object	The GOP setting.
GopSizeUnits	string	The GOP size unit.	FRAMES
GopSize	integer	The GOP size.	90
BframesNum	integer	The number of B frames.	3
CodecDetail	object	The video encoding settings.
Profile	string	The H.264 profile.	MAIN
Level	string	The video encoding level. It is not supported yet.	H264_LEVEL_AUTO
VideoCodecType	string	The video transcoding method. Valid values: NORMAL (regular transcoding) and NBHD (Narrowband HD™ transcoding).	NORMAL
CreateTime	string	The time when the channel was created. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.	2024-12-03T06:56:42Z
LastStartTime	string	The time when the channel was last started. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC. If the channel has never been started since it was created, an empty string is returned.	2024-12-03T06:56:42Z
LastStopTime	string	The time when the channel was last stopped. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC. If the channel has never stopped since it was created, an empty string is returned.	2024-12-03T06:56:42Z
MaxResults	integer	The number of entries returned per page.	10
NextToken	string	A pagination token. It can be used in the next request to retrieve a new page of results.	caeba0bbb2be03f84eb48b699f0a4883
TotalCount	integer	The total number of entries returned.	100

Examples

Success response

JSON format

{
  "RequestId": "******11-DB8D-4A9A-875B-275798******",
  "Channels": [
    {
      "ChannelId": "SEGK5KA6KYKAWQQH",
      "Name": "mych",
      "State": "IDLE",
      "InputAttachments": [
        {
          "InputId": "SEGK5KA6KYKAWQQH",
          "InputName": "myinput",
          "LanguageName": "eng",
          "AudioSelectors": [
            {
              "Name": "myselector",
              "AudioLanguageSelection": {
                "LanguageCode": "eng"
              },
              "AudioPidSelection": {
                "Pid": 123
              },
              "AudioTrackSelection": [
                {
                  "TrackId": 1
                }
              ]
            }
          ]
        }
      ],
      "OutputGroups": [
        {
          "Name": "group1",
          "Type": "MediaPackage",
          "Outputs": [
            {
              "Name": "output1",
              "MediaType": 0,
              "MediaPackageOutputSetting": {
                "NameModifier": "480p",
                "AudioGroupId": "audiogroup"
              },
              "VideoSettingName": "myVideo1",
              "AudioSettingNames": [
                "myAudio1"
              ]
            }
          ],
          "MediaPackageGroupSetting": {
            "GroupName": "myPackageGroup",
            "ChannelName": "myPackageChannel"
          },
          "MonitorUrl": "rtmp://xxx"
        }
      ],
      "AudioSettings": [
        {
          "Name": "zhuanfengzhuang",
          "AudioSelectorName": "myselector",
          "LanguageCode": "eng",
          "LanguageName": "English",
          "AudioCodec": "aac",
          "AudioCodecSetting": {
            "Profile": "AAC-LOW",
            "Bitrate": 200000,
            "SampleRate": 44100
          }
        }
      ],
      "VideoSettings": [
        {
          "Name": "video1",
          "Width": 1280,
          "Height": 720,
          "VideoCodec": "H264",
          "VideoCodecSetting": {
            "Rate": {
              "Bitrate": 2500000,
              "RateControlMode": "ABR",
              "MaxBitrate": 6000000,
              "BufferSize": 6000000
            },
            "Framerate": {
              "FramerateControl": "SPECIFIED",
              "FramerateNumerator": 25,
              "FramerateDenominator": 1
            },
            "Gop": {
              "GopSizeUnits": "FRAMES",
              "GopSize": 90,
              "BframesNum": 3
            },
            "CodecDetail": {
              "Profile": "MAIN",
              "Level": "H264_LEVEL_AUTO"
            }
          },
          "VideoCodecType": "NORMAL"
        }
      ],
      "CreateTime": "2024-12-03T06:56:42Z",
      "LastStartTime": "2024-12-03T06:56:42Z",
      "LastStopTime": "2024-12-03T06:56:42Z"
    }
  ],
  "MaxResults": 10,
  "NextToken": "caeba0bbb2be03f84eb48b699f0a4883",
  "TotalCount": 100
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.