Video Edit SDK .NET — C# Video Editor: Cut, Merge & Add Transitions

// One SDK init (brings up GStreamer); VideoEditCoreX initializes GES in its constructor.
VisioForgeEnvironment.InitializeSdk();

_editor = new VideoEditCoreX();

// Build a timeline by adding clips.
_editor.Input_AddAudioVideoFile("intro.mp4");
_editor.Input_AddAudioVideoFile("main.mp4");

// Preview: no output format → the timeline plays into the Unity texture
// through OnVideoFrameUnity (RGBA32) and VisioForgeVideoView.
_editor.OnVideoFrameUnity += _videoView.OnFrameBuffer;
_editor.Output_Format = null;
_editor.Start();

// To render instead, set an output and start:
// _editor.Output_Format = new MP4Output("result.mp4");
// _editor.Start();

using VisioForge.Core;
using VisioForge.Core.MediaBlocks.VideoEncoders;
using VisioForge.Core.Types.X.Output;
using VisioForge.Core.VideoEditX;

// Load the native stack before the first VideoEditCoreX is created
await VisioForgeX.InitSDKAsync();

// videoView is the VisioForge MAUI VideoView control on the page
var core = new VideoEditCoreX(videoView.GetVideoView());

// Each call appends the clip after the last one on the timeline
core.Input_AddAudioVideoFile(firstClipPath);
core.Input_AddAudioVideoFile(secondClipPath);

// Hardware H.264 where the device has it (MediaCodec on Android,
// VideoToolbox on iOS), software encoder otherwise
var output = Path.Combine(FileSystem.Current.AppDataDirectory, "joined.mp4");
core.Output_Format = new MP4Output(output, H264EncoderBlock.GetDefaultSettings());
core.Start();