Video.AddFrame(FrameToImageData(ImageData)) causes program to exit

[wjadevries]

I have a C# Windows .net6 application where I want to capture video to a file.
I initialize a file like this:

var file = MediaBuilder.CreateContainer(outputFilePath).WithVideo(settings).Create();

In the Capture_NewFrame eventhandler (Aforge.Video.DirectShow) I save the incoming frames like this:

                System.Drawing.Bitmap bitmap = eventArgs.Frame;
                var rect = new System.Drawing.Rectangle(System.Drawing.Point.Empty, bitmap.Size);
                var bitLock = bitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                var bitmapData = ImageData.FromPointer(bitLock.Scan0, ImagePixelFormat.Bgr24, bitmap.Size);
                file.Video.AddFrame(bitmapData);
                bitmap.UnlockBits(bitLock);

I have two cams: a Fantech Luminous C30 USB cam and an Integrated webcam in my Dell laptop.
The Fantech works fine; no issues.
But when I use the integrated webcam, the application quits unexpectedly when it reaches the call file.Video.AddFrame(bitmapData);
The code is in a try/catch block, but that isn't triggered. The application just quits.

The bitmapData for the integrated cam is Bgr24, 1280 x 720, Stride 3840, IsPooled = false, 2764800 bytes,
For the working Fantech cam the bitmapData is Bgr24, 1920 x 1080, Stride 5760, IsPooled = false, 6220800 bytes.

During the same Capture_NewFrame eventhandler I also show the incoming bitmap on an Image, which works fine for both cams.

In the event viewer I see this:

Faulting application name: TestCarMaster.exe, version: 0.7.0.0, time stamp: 0x6331eb0e
Faulting module name: swscale-6.dll, version: 6.8.112.0, time stamp: 0x6368faa4
Exception code: 0xc0000005
Fault offset: 0x000000000004b3d6
Faulting process ID: 0x1d87c
Faulting application start time: 0x01d8f2bad24f37e1
Faulting application path: C:\Repos\Wessel\Projects\TestCar\TestCarMaster\bin\Debug\net6.0-windows\TestCarMaster.exe
Faulting module path: C:\Repos\Wessel\Projects\TestCar\TestCarMaster\bin\Debug\net6.0-windows\ffmpeg\swscale-6.dll
Report ID: d8c8ee0c-38e1-47ab-ac72-9e4d23d950fd
Faulting package full name:
Faulting package-relative application ID: