How to use the beamcoder.encoder function in beamcoder

globalWorkItems: Uint32Array.from([ width, height ])
	});

	const numBytesV210 = v210_io.getPitchBytes(width) * height;
	const v210Src = await context.createBuffer(numBytesV210, 'readonly', 'coarse');

	const numBytesRGBA = width * height * 4 * 4;
	const rgbaDst = await context.createBuffer(numBytesRGBA, 'readwrite', 'coarse');
	const imageDst = await context.createBuffer(numBytesRGBA, 'readwrite', 'coarse');

	const v210Dst = await context.createBuffer(numBytesV210, 'writeonly', 'coarse');

	let dm = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
	console.log(dm)
	let dec = await beamy.decoder({ demuxer: dm, stream_index: 0 })
	let enc = beamy.encoder({ name: 'v210', codec_id: 127, width: 1920, height: 1080, pix_fmt: 'yuv422p10le', bits_per_raw_sample: 20, time_base: [ 1, 25 ] })
	console.log(enc)

	let playback = await macadam.playback({
  	deviceIndex: 0, // Index relative to the 'macadam.getDeviceInfo()' array
  	displayMode: macadam.bmdModeHD1080i50,
  	pixelFormat: macadam.bmdFormat10BitYUV
	})

	let result = []
	let counter = 0

	async function read() {
		let p = await dm.read()
		if (p.stream_index === 0) return p
		return read()
	}

//await rgbaDst.hostAccess('readonly')
		// dumpFloatBuf(rgbaDst, 1920, 2, 4);
		res[1] = await testImageProgram.run({input: rgbaDst, output: imageDst})
		//await imageDst.hostAccess('readonly')
		// dumpFloatBuf(imageDst, 1920, 2, 4);
		res[2] = await v210Writer.toV210(imageDst, v210Dst)
		await v210Dst.hostAccess('readonly')
		// v210_io.dumpBuf(v210Dst, 1920, 4);
		// console.log(process.hrtime(lstamp))
		return res;
	}

	let dm = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
	console.log(dm)
	let dec = await beamy.decoder({ demuxer: dm, stream_index: 0 })
	let enc = beamy.encoder({ name: 'v210', codec_id: 127, width: 1920, height: 1080, pix_fmt: 'yuv422p10le', bits_per_raw_sample: 20, time_base: [ 1, 25 ] })
	console.log(enc)

	let playback = await macadam.playback({
  	deviceIndex: 0, // Index relative to the 'macadam.getDeviceInfo()' array
  	displayMode: macadam.bmdModeHD1080i50,
  	pixelFormat: macadam.bmdFormat10BitYUV
	})

	let counter = 0

	const gen = (push, next) => {
		dm.read().then(p => {
			if (p.stream_index === 0) {
				push(null, p)
				next()
			} else {

});
  const platformInfo = await context.getPlatformInfo();
  console.log(platformInfo.vendor, platformInfo.devices[deviceIndex].type);

  let demuxer = await beamcoder.demuxer('../../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf');
  await demuxer.seek({ time: 40 });
  let decoder = beamcoder.decoder({ name: 'h264' });
  let encParams = {
    name: 'v210',
    width: width,
    height: height,
    time_base: [1, 25],
    framerate: [25, 1],
    pix_fmt: 'yuv422p10le',
  };
  let encoder = beamcoder.encoder(encParams);

  const bgColSpecRead = '709';
  const ovColSpecRead = 'sRGB';
  const colSpecWrite = '709';

  v210Loader = new rgbyuv.yuvLoader(context, bgColSpecRead, colSpecWrite, new v210_io.reader(width, height));
  await v210Loader.init();
  v210Saver = new rgbyuv.yuvSaver(context, colSpecWrite, new v210_io.writer(width, height));
  await v210Saver.init();

  bgra8Loader = new rgbrgb.rgbLoader(context, ovColSpecRead, colSpecWrite, new bgra8_io.reader(width, height));
  await bgra8Loader.init();

  const numBytesV210 = v210_io.getPitchBytes(width) * height;
  v210Src = await context.createBuffer(numBytesV210, 'readonly', 'fine');

});
  const platformInfo = await context.getPlatformInfo();
  console.log(platformInfo.vendor, platformInfo.devices[deviceIndex].type);

  let demuxer = await beamcoder.demuxer('../../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf');
  await demuxer.seek({ time: 40 });
  let decoder = beamcoder.decoder({ name: 'h264' });
  let encParams = {
    name: 'v210',
    width: width,
    height: height,
    time_base: [1, 25],
    framerate: [25, 1],
    pix_fmt: 'yuv422p10le',
  };
  let encoder = beamcoder.encoder(encParams);

  const bgColSpecRead = '709';
  const ovColSpecRead = 'sRGB';
  const colSpecWrite = '709';

  v210Loader = new rgbyuv.yuvLoader(context, bgColSpecRead, colSpecWrite, new v210_io.reader(width, height));
  await v210Loader.init();
  v210Saver = new rgbyuv.yuvSaver(context, colSpecWrite, new v210_io.writer(width, height));
  await v210Saver.init();

  bgra8Loader = new rgbrgb.rgbLoader(context, ovColSpecRead, colSpecWrite, new bgra8_io.reader(width, height));
  await bgra8Loader.init();

  const numBytesV210 = v210_io.getPitchBytes(width) * height;
  v210Src = await context.createBuffer(numBytesV210, 'readonly', 'coarse');