exec, abort signal

[abernier]

I know there is global ffmpeg.terminate, but is there a way (maybe using send?) to "abort" a single ffmpeg.exec(cmd) ?

It can for ex be an AbortController signal like in fetch:

const controller = new AbortController();
ffmpeg.exec(cmd, -1, {
  signal: controller.signal
})

// later...
controller.abort();

[abernier]

Maybe we could pass the signal to the centralised FFmpeg.prototype.#send method with a 3rd parameter?

ffmpeg.wasm/packages/ffmpeg/src/classes.ts

Lines 86 to 100 in 9110bb0

	#send = (
	{ type, data }: Message,
	trans: Transferable[] = []
	): Promise<CallbackData> => {
	if (!this.#worker) {
	return Promise.reject(ERROR_NOT_LOADED);
	}
	return new Promise((resolve, reject) => {
	const id = getMessageID();
	this.#worker && this.#worker.postMessage({ id, type, data }, trans);
	this.#resolves[id] = resolve;
	this.#rejects[id] = reject;
	});
	};

[abernier]

Here is my try #573

[divyenduz]

Question: is this expected to also terminate a running exec? Or is the user expected to call ffmpeg.terminate manually? Currently, termination is manual