AssemblyAI Transcription Example C#

transcript.cs

using System.Net.Http;
using System.Text;

// Third-pary package needs to be added, e.g, with:
// dotnet add package NewtonSoft.Json
using Newtonsoft.Json;


string url = "https://api.assemblyai.com/v2/transcript";

var data = new Dictionary<string, string>(){
    { "audio_url", "https://bit.ly/3yxKEIY" }
};

using (var client = new HttpClient())
{
    // Add headers
    client.DefaultRequestHeaders.Add("authorization", "API_TOKEN");

    var content = new StringContent(JsonConvert.SerializeObject(data), Encoding.UTF8, "application/json");

    HttpResponseMessage response = await client.PostAsync(url, content);

    var responseContent = await response.Content.ReadAsStringAsync();
    var responseJson = JsonConvert.DeserializeObject<dynamic>(responseContent);

    string transcriptId = responseJson.id;

    string pollingEndpoint = $"https://api.assemblyai.com/v2/transcript/{transcriptId}";

    while (true) {

        var pollingResponse = await client.GetAsync(pollingEndpoint);

        var pollingResponseContent = await pollingResponse.Content.ReadAsStringAsync();
        var pollingResponseJson = JsonConvert.DeserializeObject<dynamic>(pollingResponseContent);

        if (pollingResponseJson.status == "completed") {
            Console.WriteLine(pollingResponseJson.text);
            break;
        } else if (pollingResponseJson.status == "error") {
            throw new Exception($"Transcription failed: {pollingResponseJson.error}");
        } else {
            Thread.Sleep(3000);
        }
    }
}