Help Center/ Media Processing Center/ API Reference/ Transcoding Template APIs/ Modifying a Transcoding Template

Updated on 2026-02-25 GMT+08:00

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Modifying a Transcoding Template

Function

This API is used to modify a custom transcoding template.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
mpc:transcodeTemplate:update	Write	-	-	-	-

URI

PUT /v1/{project_id}/template/transcodings

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	No	String	User token The token can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token.
Authorization	No	String	Authentication information. This parameter is mandatory when AK/SK-based authentication is used.
X-Project_Id	No	String	Project ID. This parameter is mandatory when AK/SK-based authentication is used. It is same as the project ID in path parameters.
X-Sdk-Date	No	String	Time when the request is sent. This parameter is mandatory when AK/SK-based authentication is used.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
template_id	Yes	Long	ID of a transcoding template
template_name	Yes	String	Name of the transcoding template.
video	No	Video object	Video information
audio	No	Audio object	Audio information
common	Yes	Common object	Common information

**Table 4** Video
Parameter	Mandatory	Type	Description
output_policy	No	String	Output policy: If output_policy is set to discard in video parameters and transcode in audio parameters, only audio is output. If output_policy is set to transcode in video parameters and to discard in audio parameters, only video is output. If output_policy is set to copy in video parameters, the original video is copied without codec. If output_policy is set to copy in audio parameters, the original audio is copied without codec. output_policy cannot be set to discard in video and audio parameters at the same time. If output_policy is set to transcode in video and video parameters at the same time, video and audio are output. The options are as follows: discard transcode copy
codec	No	Integer	Video codec. Possible values: 1: H.264 2: H.265
bitrate	No	Integer	Average output bitrate Its value is 0 or an integer ranging from 40 to 30,000. Unit: kbit/s If this parameter is set to 0, the average output bitrate is an adaptive value.
profile	No	Integer	Encoding profile. The recommended value is 3. The default value is 0, indicating that the average output bitrate is adaptive to codec. When codec is set to 1, profile is set to 3. When codec is set to 2, profile is set to 4. The options are as follows: 1: VIDEO_PROFILE_H264_BASE 2: VIDEO_PROFILE_H264_MAIN 3: VIDEO_PROFILE_H264_HIGH 4: VIDEO_PROFILE_H265_MAIN
level	No	Integer	Encoding level Options: 0: AUTO 1: VIDEO_LEVEL_1_0 2: VIDEO_LEVEL_1_1 3: VIDEO_LEVEL_1_2 4: VIDEO_LEVEL_1_3 5: VIDEO_LEVEL_2_0 6: VIDEO_LEVEL_2_1 7: VIDEO_LEVEL_2_2 8: VIDEO_LEVEL_3_0 9: VIDEO_LEVEL_3_1 10: VIDEO_LEVEL_3_2 11: VIDEO_LEVEL_4_0 12: VIDEO_LEVEL_4_1 13: VIDEO_LEVEL_4_2 14: VIDEO_LEVEL_5_0 15: VIDEO_LEVEL_5_1
preset	No	Integer	Encoding quality. The options include: 1: VIDEO_PRESET_SPEED (fast encoding) 3: VIDEO_PRESET_HIGHQUALITY (high-quality encoding). 4: VIDEO_PRESET_QUALITY (quality encoding). 5: VIDEO_PRESET_BALANCE (balanced encoding) The default value is 1.
max_iframes_interval	No	Integer	Maximum I-frame interval. The value ranges from 2 to 10. Default value: 5 Unit: second
bframes_count	No	Integer	Maximum B-frame interval. Range H.264: The value ranges from 0 to 8. The default value is 4. H.265: The value ranges from 0 to 7. The default value is 7. Unit: frame
frame_rate	No	Integer	Frame rate. Its value is 0 or an integer ranging from 5 to 60. Unit: FPS NOTE: If the configured frame rate is not within the value range, the value is automatically changed to 0. If the configured frame rate is higher than the frame rate of the input file, the value is automatically changed to the frame rate of the input file.
width	No	Integer	Video width The options are as follows: H.264: The value is 0 or a multiple of 2 from 32 to 4,096. H.265: The value is 0 or a multiple of 2 from 320 to 4,096. Unit: pixel Note: If this parameter is set to 0, the video width is an adaptive value.
height	No	Integer	Video height H.264: The value is 0 or a multiple of 2 from 32 to 2,880. H.265: The value is 0 or a multiple of 2 from 96 to 2,880. Unit: pixel Note: If this parameter is set to 0, the video height is an adaptive value.
black_cut	No	Integer	Whether to enable black bar removal. Possible values: 0: disables black bar removal 1: enables black bar removal and low-complexity algorithms for videos longer than 5 minutes 2: enables black bar removal and high-complexity algorithms for videos no longer than 5 minutes
stream_name	No	String	Stream name

**Table 5** Audio
Parameter	Mandatory	Type	Description
output_policy	No	String	Output policy: If output_policy is set to discard in video parameters and transcode in audio parameters, only audio is output. If output_policy is set to transcode in video parameters and to discard in audio parameters, only video is output. If output_policy is set to copy in video parameters, the original video is copied without codec. If output_policy is set to copy in audio parameters, the original audio is copied without codec. output_policy cannot be set to discard in video and audio parameters at the same time. If output_policy is set to transcode in video and video parameters at the same time, video and audio are output. The options are as follows: discard transcode copy
codec	No	Integer	Audio codec Possible options are: 1: AAC 2: HEAAC1 3: HEAAC2 4: MP3
sample_rate	No	Integer	Audio sampling rate The options are as follows: 1: AUDIO_SAMPLE_AUTO 2: AUDIO_SAMPLE_22050 (22,050 Hz) 3: AUDIO_SAMPLE_32000 (32,000 Hz) 4: AUDIO_SAMPLE_44100 (44,100 Hz) 5: AUDIO_SAMPLE_48000 (48,000 Hz) 6: AUDIO_SAMPLE_96000 (96,000 Hz) NOTE: When the encoding format is MP3, the audio sampling ratio cannot be 6.
bitrate	No	Integer	Audio bitrate. The value is 0 or ranges from 8 to 1,000. Unit: kbit/s
channels	Yes	Integer	Number of audio channels Options: 1: AUDIO_CHANNELS_1 (mono) 2: AUDIO_CHANNELS_2 (stereo) 6: AUDIO_CHANNELS_5_1 (5.1 surround sound) When the media packaging format is audio (MP3), the number of audio channels cannot be set to 5.1.

**Table 6** Common
Parameter	Mandatory	Type	Description
PVC	No	Boolean	Whether to enable low-bitrate HD The options are as follows: false: disabled (This function is disabled by default.) true: enabled (The value 0 indicates that the function is disabled. Other positive integers and negative values indicate true.)
hls_interval	No	Integer	HLS segment duration. This parameter is used only when pack_type is set to 1 or 3. Value range: [2,10] Unit: second
dash_interval	No	Integer	DASH segment duration. This parameter is used only when pack_type is set to 2 or 3. Value range: [2,10] Unit: second
pack_type	Yes	Integer	Container format. The options include: 1: HLS 2: DASH 3: HLS+DASH 4: MP4 5: MP3 6: ADTS 8: MOV 9: FLV 10: AVI NOTE: If pack_type is set to 5 or 6, do not configure video parameters. If pack_type is set to 9, multi-audio is not supported. If pack_type is set to 10, H.265 encoding is not supported.

Response Parameters

Status code: 204

Transcoding template modified successfully.

Status code: 403

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code
error_msg	String	Error description

Example Requests

Updates a transcoding template.

PUT https://{endpoint}/v1/{project_id}/template/transcodings/

{
  "template_id" : 1001,
  "template_name" : "MP4_H.264_1920x1080_6000_HEAAC_PVC",
  "video" : {
    "codec" : 1,
    "bitrate" : 6000,
    "profile" : 3,
    "level" : 15,
    "preset" : 3,
    "max_iframes_interval" : 5,
    "black_cut" : 0,
    "bframes_count" : 4,
    "frame_rate" : 1,
    "width" : 1920,
    "height" : 1080
  },
  "audio" : {
    "codec" : 1,
    "sample_rate" : 4,
    "bitrate" : 128,
    "channels" : 2
  },
  "common" : {
    "PVC" : false,
    "hls_interval" : 5,
    "dash_interval" : 5,
    "pack_type" : 1
  }
}

Example Responses

Status code: 403

Failed to modify the transcoding template.

{
  "error_code" : "MPC.10202",
  "error_msg" : "Invalid request parameter."
}

Status Codes

Status Code	Description
204	Transcoding template modified successfully.
403	Failed to modify the transcoding template.

Error Codes

See Error Codes.

Parent Topic: Transcoding Template APIs

Previous topic: Creating a Transcoding Template

Next topic: Deleting a Transcoding Template

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