Load some MP4 data between 2 datetime stamps from AWS Kinesis Video Stream

LoadMp4DataFromKinesisStream.cs

using Amazon;
using Amazon.Runtime;
using Amazon.KinesisVideo;
using Amazon.KinesisVideo.Model;
using Amazon.KinesisVideoArchivedMedia;
using Amazon.KinesisVideoArchivedMedia.Model;
using System.Configuration;        




        public Stream LoadStream(string streamName, DateTime from, DateTime to)
        {
            MemoryStream ret_value = new MemoryStream();

            DateTime fromUtc = DateTime.SpecifyKind(from, DateTimeKind.Utc);
            DateTime toUtc = DateTime.SpecifyKind(to, DateTimeKind.Utc);
            

            string accessKey = null;
            string secretKey = null;
            string regionStr = ConfigurationManager.AppSettings["dvr_kinesis_region"];
            try
            {
                accessKey = ConfigurationManager.AppSettings["dvr_kinesis_access_key"];
                secretKey = ConfigurationManager.AppSettings["dvr_kinesis_secret_key"];
            }
            catch { }

            RegionEndpoint awsRegion = RegionEndpoint.GetBySystemName(regionStr);

            AmazonKinesisVideoClient client1 = null;
            if (!string.IsNullOrEmpty(accessKey) && !string.IsNullOrEmpty(secretKey))
            {
                var credentials = new BasicAWSCredentials(accessKey, secretKey);
                client1 = new AmazonKinesisVideoClient(credentials, awsRegion);
            }
            else
            {
                client1 = new AmazonKinesisVideoClient(awsRegion);
            }
            
            var endpointResponse = client1.GetDataEndpoint(new GetDataEndpointRequest
            {
                APIName = new APIName("GET_CLIP"),
                StreamName = streamName
            });


            var config = new AmazonKinesisVideoArchivedMediaConfig
            {
                RegionEndpoint = awsRegion,
                ServiceURL = endpointResponse.DataEndpoint 
            };

            AmazonKinesisVideoArchivedMediaClient client = null;
            if (!string.IsNullOrEmpty(accessKey) && !string.IsNullOrEmpty(secretKey))
            {
                var credentials = new BasicAWSCredentials(accessKey, secretKey);
                client = new AmazonKinesisVideoArchivedMediaClient(credentials, config);
            }
            else
            {
                client = new AmazonKinesisVideoArchivedMediaClient(config);
            }

            var getClipRequest = new GetClipRequest
            {
                StreamName = streamName,
                ClipFragmentSelector = new ClipFragmentSelector
                {
                    FragmentSelectorType = ClipFragmentSelectorType.PRODUCER_TIMESTAMP,
                    TimestampRange = new ClipTimestampRange
                    {
                        StartTimestamp = fromUtc.ToLocalTime(),
                        EndTimestamp = toUtc.ToLocalTime()
                    },
                }
            };

            using (var response = client.GetClip(getClipRequest))
            {
                Console.WriteLine($" resusult: {response.HttpStatusCode} content lenght: {response.ContentLength} response sizeL {response.Payload.ToString()}");
                response.Payload.CopyTo(ret_value);
                ret_value.Seek(0, SeekOrigin.Begin);

                return ret_value;
            }
        }