Почему ffmpeg на Amazon Lambda вылетает с ошибкой SIGSEGV?

const join = require('path').join;
const tmpdir = require('os').tmpdir;
const process = require('process');

const tempDir = process.env['TEMP'] || tmpdir();
const filename = join(tempDir, 'test.mp4');

const fs = require('fs');

const spawn = require('child_process').spawn;
const exec = require('child_process').exec;

const async = require('async');
const AWS = require('aws-sdk');
const util = require('util');

process.env['PATH'] = process.env['PATH'] + ':' + process.env['LAMBDA_TASK_ROOT'];

const s3 = new AWS.S3();
 

exports.handler = function(event, context, callback) {
  // Read options from the event.
  console.log("Reading options from event:\n", util.inspect(event, {depth: 5}));
  var srcBucket = event.Records[0].s3.bucket.name;
  // Object key may have spaces or unicode non-ASCII characters.
  var srcKey = decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, " "));  
  var dstBucket = srcBucket + "resized";
  var dstKey  = "render-test.mp4";

  // Sanity check: validate that source and destination are different buckets.
  if (srcBucket == dstBucket) {
    callback("Source and destination buckets are the same.");
    return;
  }


  // Download the image from S3, transform, and upload to a different S3 bucket.
  async.waterfall([
    function transform(next) {
	    var args = [
		    '-filter_complex',
		    '"testsrc=r=25:s=640x480:d=3"',
		    '-an',
		    '-y',
		    '-hide_banner',
		    '-c:v', 'libx264',
		    filename,
	    ];
	    
	    console.log("Will launch ffmpeg");
			const childProcess = spawn('ffmpeg', args);
			
			childProcess.on('close', function(e) {
				console.log('ffmpeg close event: ' + JSON.stringify(arguments));
				next();
			});

	    console.log("After launched ffmpeg");
    },
    
    function upload(next) {
	    
	    next();

			var fileStream = fs.createReadStream(filename);
			fileStream.on('error', function (err) {
				if (err) { throw err; }
			});  
			fileStream.on('open', function () {

				s3.putObject(
					{
					  Bucket: dstBucket,
					  Key: dstKey,
					  Body: fileStream,
	          ContentType: 'video/mp4',
					},
					next
				);

			});
    }
  ], function (err) {
      if (err) {
        console.error(
          'Unable to resize ' + srcBucket + '/' + srcKey +
          ' and upload to ' + dstBucket + '/' + dstKey +
          ' due to an error: ' + err
        );
      } else {
        console.log(
          'Successfully rendered ' + dstBucket + '/' + dstKey
        );
      }

      callback(null, "message");
    }
  );
};