Add license headers, add @mediabunny/server to build process, add doc blocks, small fixes

packages/server/src/index.ts

@@ -1,3 +1,11 @@
+/*!
+ * Copyright (c) 2026-present, Vanilagy and contributors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
 import { registerDecoder, registerEncoder, registerVideoSampleTransformer } from 'mediabunny';
 import * as NodeAv from 'node-av';
 import { NodeAvVideoDecoder } from './video-decoder';
@@ -18,6 +26,20 @@ if ((globalThis as Record<symbol, unknown>)[SERVER_LOADED_SYMBOL]) {
 (globalThis as Record<symbol, unknown>)[SERVER_LOADED_SYMBOL] = true;
 
 let registered = false;
+
+/**
+ * Registers video and audio decoders and encoders for all codecs, using FFmpeg's libavcodec under the hood.
+ * Additionally, a custom `VideoSample` transformer based on libavfilter is registered to enable resizing, rotation and
+ * cropping of video frames.
+ *
+ * Make sure to call this function before interacting with Mediabunny.
+ *
+ * The decoders and encoders will automatically detect hardware acceleration support for each codec and platform and
+ * make use of it if applicable.
+ *
+ * @group \@mediabunny/server
+ * @public
+ */
 export const registerMediabunnyServer = () => {
 	if (registered) {
 		return;
@@ -36,3 +58,6 @@ export const registerMediabunnyServer = () => {
 
 	registerVideoSampleTransformer(transformVideoSample);
 };
+
+export { NodeAvFrameVideoSampleResource } from './video-sample';
+export { NodeAvFrameAudioSampleResource } from './audio-sample';