.NET (Core and Framework)

using System.Runtime.InteropServices;
using FFmpeg.AutoGen;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.Formats;

Class Program
{
    unsafe static void Main(string[] args)
    {
string inputUrl = "rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mp4"; 


ffmpeg.avformat_open_input(&pFormatContext, inputUrl, null, null);

System.NotSupportedException
  HResult=0x80131515
  Message=Specified method is not supported.
  Source=FFmpeg.AutoGen
  StackTrace:
   at FFmpeg.AutoGen.DynamicallyLoadedBindings.<>c.<Initialize>b__2_1284(AVFormatContext** <p0>, String <p1>, AVInputFormat* <p2>, AVDictionary** <p3>)
   at FFmpeg.AutoGen.ffmpeg.avformat_open_input(AVFormatContext** ps, String url, AVInputFormat* fmt, AVDictionary** options)
   at Program.Main(String[] args)

dim URL as string = webView21.Source.ToString()

using StudentsMinimalApi;
using StudentsMinimalApi.Validation;
using System.Collections.Concurrent;

WebApplicationBuilder builder = WebApplication.CreateBuilder(args);

builder.Services.AddProblemDetails();

WebApplication app = builder.Build();

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler();
}

app.UseStatusCodePages();

ConcurrentDictionary<string, Student> _students = new();

RouteGroupBuilder studentsApi = app.MapGroup("/student");

studentsApi.MapGet("/", () => _students);

RouteGroupBuilder studentsApiWithValidation = studentsApi
    .MapGroup("/"); //I use a filter factory on this builder, but it does not matter for my question.

studentsApiWithValidation.MapGet("/{id}", (string id) =>
    _students.TryGetValue(id, out var student)
       ? TypedResults.Ok(student)
       : Results.Problem(statusCode: 404));

studentsApiWithValidation.MapPost("/{id}", (Student student, string id) =>
  _students.TryAdd(id, student)
     ? TypedResults.Created($"/student/{id}", student)
     : Results.ValidationProblem(new Dictionary<string, string[]>
  {
    { "id", new[] { "A student with the given id already exists." } }
  }));

app.Run();

public partial class Program { }

[Fact]
public async Task MapPost_Should_Successfully_Create_A_New_Student()
{
    await using var application = new WebApplicationFactory<Program>();

    using HttpClient? client = application.CreateClient();

    HttpResponseMessage? resultFromPost = await client.PostAsJsonAsync("/student/s1", new Student("X", "Y", "Z"));
    HttpResponseMessage? resultFromGet = await client.GetAsync("/student/s1");

    Assert.Equal(HttpStatusCode.Created, resultFromPost.StatusCode);
    Assert.Equal(HttpStatusCode.OK, resultFromGet.StatusCode);

    string? contentAsString = await resultFromGet.Content.ReadAsStringAsync();

    var contentAsStudentObject =
        JsonConvert.DeserializeObject<Student>(contentAsString);

    Assert.Equal(HttpStatusCode.Created, resultFromPost.StatusCode);
    Assert.Equal(HttpStatusCode.OK, resultFromGet.StatusCode);

    Assert.NotNull(contentAsStudentObject);

    Assert.Equal("X", contentAsStudentObject.FirstName);
    Assert.Equal("Y", contentAsStudentObject.LastName);
    Assert.Equal("Z", contentAsStudentObject.FavouriteSubject);
}