Subclip a video when encoding with Media Services - .NET

You can trim or subclip a video when encoding it using a Job. This functionality works with any Transform that is built using either the BuiltInStandardEncoderPreset presets, or the StandardEncoderPreset presets.

The following C# example creates a job that trims a video in an Asset as it submits an encoding job.

Prerequisites

To complete the steps described in this topic, you have to:

• Create an Azure Media Services account
• Create a Transform and an input and output Assets. You can see how to create a Transform and input and output Assets in the Upload, encode, and stream videos using .NET tutorial.
• Review the Encoding concept topic.

Example

/// <summary>
/// Submits a request to Media Services to apply the specified Transform to a given input video.
/// </summary>
/// <param name="client">The Media Services client.</param>
/// <param name="resourceGroupName">The name of the resource group within the Azure subscription.</param>
/// <param name="accountName"> The Media Services account name.</param>
/// <param name="transformName">The name of the transform.</param>
/// <param name="jobName">The (unique) name of the job.</param>
/// <param name="inputAssetName">The name of the input asset.</param>
/// <param name="outputAssetName">The (unique) name of the  output asset that will store the result of the encoding job. </param>
// <SubmitJob>
private static async Task<Job> JobWithBuiltInStandardEncoderWithSingleClipAsync(
    IAzureMediaServicesClient client,
    string resourceGroupName,
    string accountName,
    string transformName,
    string jobName,
    string inputAssetName,
    string outputAssetName)
{
    var jobOutputs = new List<JobOutputAsset>
    {
        new JobOutputAsset(state: JobState.Queued, progress: 0, assetName: outputAssetName)
    };

    var clipStart = new AbsoluteClipTime()
    {
        Time = new TimeSpan(0, 0, 20)
    };

    var clipEnd = new AbsoluteClipTime()
    {
        Time = new TimeSpan(0, 0, 30)
    };

    var jobInput = new JobInputAsset(assetName: inputAssetName, start: clipStart, end: clipEnd);

    Job job = await client.Jobs.CreateAsync(
        resourceGroupName,
        accountName,
        transformName,
        jobName,
        new Job(input: jobInput, outputs: jobOutputs.ToArray(), name: jobName)
        {
            Description = $"A Job with transform {transformName} and single clip.",
            Priority = Priority.Normal,
        });

    return job;
}

Next steps

How to encode with a custom transform