Upload file with AWS S3 signed url always setting content-type binary/octet-stream

I am facing a problem where the content-type always changes during the upload process. I am using lambda and nodejs to generate a URL. Here is my code. I would be grateful for any help!

Your code for generating the Signed URL works ok. The problem seems to be with the actual uploading of the file. Try these options and let's see if you get a better result:

1. In postman use the binary option and not the form-data

   form-data adds a lot of additional values

2. Create a nodejs file and test with this code

   const axios = require('axios');
   const fs = require('fs');
   
   (async () => {
       const file = fs.readFileSync('./download.mp4');
   
       await axios.put(signedUrl, {
           data: file,
       }, {
           headers: {
               'Content-Type': 'video/mp4'
           }
       });
   
   })();
   

   The result I get: