I have a pre-signed upload URL from AWS S3 to upload a video file to. Testing on Postman the video is successfully uploaded. However i get a 403 returned when implementing in retrofit. I cannot use multipart upload for this task.

service call :

```
@Headers("Content-Type: video/mp4")
    @PUT
    fun uploadTaskAWS(@Url awsUrl: String, @Body filePart: RequestBody): Call<ResponseBody>

```

upload:

```
            val file = File(task.file_path)
            val requestFile = RequestBody.create(MediaType.parse("video/mp4"), file)
            val response = awsTaskUploadService.uploadTaskAWS(task.upload_url, requestFile)

```

I have ensured the URL is correct. The content type header is added too, postman screenshot attached. Getting 403 Forbidden Error

[screenshot of postman](https://i.stack.imgur.com/3BSKK.png)

I have found this related question however i'm still getting a 403. [Upload a file to AWS S3 pre-signed URL using Retrofit2](https://stackoverflow.com/questions/45991720/upload-a-file-to-aws-s3-pre-signed-url-using-retrofit2)

Any suggestions?