FFMPEG Video Editing on AWS LAMBDA NODE JS

Question

I am trying to get video from s3 on lambda and save tmp folder. From tmp folder , video is being used to edit and again save on s3 object.

I have uploaded executable file and set the FFMPEG_PATH enviroment variable. Here unable to overlay text on video.That is an issue

var params = {
    Bucket: "Bucket name",
    Key: "Sample.mp4",
};

const s3Object = s3.getObject(params).promise();
await s3Object
    .then((data) => {
        console.log("jhkjkk");
        console.log(data);
        writeFileSync(`/tmp/Sample.mp4`, data.Body);
        console.log("provess comp");
        //ffmpegM.setFfmpegPath("/opt/ffmpeglib/ffmpeg");
        console.log(ffmpegM);
        ffmpegM("/tmp/Sample.mp4")
            .output(`/tmp/Samples.mp4`)
            .on("error", (error) => {
                console.log("Error converting to mp4", error); // this does NOT get logged out
            })
            .on("end", () => {
                // this code block does not get hit
                console.log("Successfully converted to mp4");
            })
            .run();
        })
    .catch((err) => {
        console.log("dd");
        console.log(err);
    });