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ComposeMedia

Last updated: 2024-03-27 16:08:33

    1. API Description

    Domain name for API request: vod.tencentcloudapi.com.

    This API is used to compose a media file. You can use it to do the following:

    1. Rotation/Flipping: Rotate a video or image by a specific angle or flip a video or image.
    2. Audio control: Increase/Lower the volume of an audio/video file or mute an audio/video file.
    3. Overlaying: Overlay videos/images in a specified sequence to achieve the picture-in-picture effect.
    4. Audio mixing: Mix the audios of audio/video files.
      5 Audio extraction: Extract audio from a video.
    5. Clipping: Clip segments from audio/video files according to a specified start and end time.
    6. Splicing: Splice videos/audios/images in a specified sequence.
    7. Transition: Add transition effects between video segments or images that are spliced together.

    The output file is in MP4 or MP3 format. In the callback for media composition, the event type is ComposeMediaComplete.

    A maximum of 100 requests can be initiated per second for this API.

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    2. Input Parameters

    The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

    Parameter Name Required Type Description
    Action Yes String Common Params. The value used for this API: ComposeMedia.
    Version Yes String Common Params. The value used for this API: 2018-07-17.
    Region No String Common Params. This parameter is not required.
    Tracks.N Yes Array of MediaTrack List of input media tracks, including video, audio, and image tracks.
  • Input tracks are synced to the output media file.
  • Input tracks are synced to each other. Videos and images in higher tracks are superimposed over those in lower tracks. Audio tracks are mixed.
  • There can be up to 10 tracks for video, audio, and images each.
  • The total number of clips in all tracks cannot exceed 500.
    		•
    Output Yes ComposeMediaOutput Information of output media file.
    SubAppId No Integer The VOD application ID. For customers who activate VOD service from December 25, 2023, if they want to access resources in a VOD application (whether it's the default application or a newly created one), they must fill in this field with the application ID.
    Canvas No Canvas Canvas used for composing video file.
    SessionContext No String Used to pass through user request information. ComposeMediaComplete callback will return the value of this parameter. It contains up to 1,000 characters.
    SessionId No String Used to identify duplicate requests. After you send a request, if any request with the same SessionId has already been sent in the last three days (72 hours), an error message will be returned. SessionId contains up to 50 characters. If this parameter is not carried or is an empty string, no deduplication will be performed.

    3. Output Parameters

    Parameter Name Type Description
    TaskId String Media file composing task ID, which can be used to query the status of composing task (with task type being MakeMedia).
    RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

    4. Example

    Example1 Add new audio to video

    Eliminate the original audio of 5285485487985271487, use 5285485487985271488 for dubbing starting from 5 seconds, use 2 to 16 seconds of 5285485487985271489 starting from 20 seconds for dubbing, and generate a new video.

    Input Example

    POST / HTTP/1.1
Host: vod.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ComposeMedia
<Public request parameters>

{
    "Output": {
        "Container": "mp4",
        "FileName": "test"
    },
    "Tracks": [
        {
            "TrackItems": [
                {
                    "Type": "Empty",
                    "EmptyItem": {
                        "Duration": "5"
                    }
                },
                {
                    "AudioItem": {
                        "SourceMedia": "5285485487985271488",
                        "Duration": "15"
                    },
                    "Type": "Audio"
                },
                {
                    "AudioItem": {
                        "Duration": "14",
                        "SourceMedia": "5285485487985271489",
                        "SourceMediaStartTime": "2"
                    },
                    "Type": "Audio"
                }
            ],
            "Type": "Audio"
        },
        {
            "TrackItems": [
                {
                    "Type": "Video",
                    "VideoItem": {
                        "SourceMedia": "5285485487985271487",
                        "AudioOperations": [
                            {
                                "VolumeParam": {
                                    "Mute": "1"
                                },
                                "Type": "Volume"
                            }
                        ]
                    }
                }
            ],
            "Type": "Video"
        }
    ]
}

    Output Example

    {
    "Response": {
        "RequestId": "6ca31e3a-6b8e-4b4e-9256-fdc700064ef3",
        "TaskId": "125xxx65-ComposeMedia-bffb15f07530b57bc1aabb01fac74bca"
    }
}

    Example2 Crop and splice two video streams together

    Take the 2nd to 62nd second of 5285485487985271487 and the 6th to 81st second of 5285485487985271488 for splicing. Set a 5-second fade-in and fade-out transition in the middle. Paste a picture 5285485487985271489 from 3 seconds to 18 seconds of the video. The position is (20px , 20px), width and height (100px, 100px).

    Input Example

    POST / HTTP/1.1
Host: vod.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ComposeMedia
<Public request parameters>

{
    "Output": {
        "Container": "mp4",
        "FileName": "test"
    },
    "Tracks": [
        {
            "TrackItems": [
                {
                    "StickerItem": {
                        "CoordinateOrigin": "TopLeft",
                        "XPos": "20px",
                        "YPos": "20px",
                        "Height": "100px",
                        "Width": "100px",
                        "StartTime": "3",
                        "Duration": "15",
                        "SourceMedia": "5285485487985271489"
                    },
                    "Type": "Sticker"
                }
            ],
            "Type": "Sticker"
        },
        {
            "TrackItems": [
                {
                    "TransitionItem": {
                        "Duration": "5",
                        "MediaTransitions": [
                            {
                                "Type": "ImageFadeInFadeOut"
                            }
                        ]
                    },
                    "Type": "Transition"
                },
                {
                    "Type": "Video",
                    "VideoItem": {
                        "Duration": "60",
                        "SourceMedia": "5285485487985271487",
                        "SourceMediaStartTime": "2"
                    }
                },
                {
                    "Type": "Video",
                    "VideoItem": {
                        "Duration": "75",
                        "SourceMedia": "5285485487985271488",
                        "SourceMediaStartTime": "6"
                    }
                }
            ],
            "Type": "Video"
        }
    ]
}

    Output Example

    {
    "Response": {
        "RequestId": "6ca31e3a-6b8e-4b4e-9256-fdc700064ef3",
        "TaskId": "125xxx65-ComposeMedia-bffb15f07530b57bc1aabb01fac74bc2"
    }
}

    Example3 Use one video as a picture-in-picture for another video

    Use the video of 5285485487985271487 as the main picture of the picture-in-picture; use the video of 5285485487985271488 as the sub-picture of the picture-in-picture; the center of the sub-picture is offset by 25% of the main picture (that is, in the lower right corner of the main picture), and the width accounts for 30% of the picture.

    Input Example

    POST / HTTP/1.1
Host: vod.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ComposeMedia
<Public request parameters>

{
    "Output": {
        "Container": "mp4",
        "FileName": "test"
    },
    "Tracks": [
        {
            "TrackItems": [
                {
                    "Type": "Video",
                    "VideoItem": {
                        "CoordinateOrigin": "Center",
                        "Width": "30%",
                        "SourceMedia": "5285485487985271488",
                        "XPos": "25%",
                        "YPos": "25%"
                    }
                }
            ],
            "Type": "Video"
        },
        {
            "TrackItems": [
                {
                    "Type": "Video",
                    "VideoItem": {
                        "SourceMedia": "5285485487985271487"
                    }
                }
            ],
            "Type": "Video"
        }
    ]
}

    Output Example

    {
    "Response": {
        "RequestId": "6ca31e3a-6b8e-4b4e-9256-fdc700064ef3",
        "TaskId": "125xxx65-ComposeMedia-bffb15f07530b57bc1aabb01fac74bca"
    }
}

    5. Developer Resources

    SDK

    TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

    Command Line Interface

    6. Error Code

    The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

    Error Code Description
    FailedOperation Operation failed.
    FailedOperation.InvalidVodUser The VOD service is not activated.
    FailedOperation.UploadCosFail Operation failed: failed to upload file to COS.
    InternalError Internal error.
    InternalError.GetFileInfoError Internal error: an error occurred while getting media file information.
    InternalError.GetMediaListError Internal error: an error occurred while getting the media list.
    InvalidParameter Invalid parameter.
    InvalidParameterValue.ClipDuration Incorrect parameter value: the clipping duration is too long.
    InvalidParameterValue.SessionContextTooLong SessionContext is too long.
    InvalidParameterValue.SessionId The deduplication ID already exists. The request is removed due to duplication.
    UnauthorizedOperation Unauthorized operation.
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