Streaming issue after upgrade from ffmpeg 5.1.3 to 6.0

[sophiezhang666]

I wrote the following code to stream output from ffmpeg.
And observe that it works for ffmpeg 5.13, but after upgrade to ffmpeg 6.0, image.Decode() cannot detect image type from the first two bytes except for the first frame. Not sure if new version ffmpeg no longer provides magic bytes to following images or what.
Any idea?

                pr, pw := io.Pipe()
                ...
		kwArgs := ffmpeg.KwArgs{
			"hide_banner": "",
			"loglevel":    "quiet",
			"format":      "image2pipe",
			"vcodec":      "mjpeg",
			"r":           "1",
		}

		err := ffmpeg.Input(presignUrl).
			Output("pipe:", kwArgs).
			WithOutput(pw, os.Stdout).
			Run()
                 ....
			img, _, err := image.Decode(pr)
			if err != nil {
				return fmt.Errorf("error decoding image from pipe reader: %w", err)
			}