Upload video with Jquey Ajax Hi with the APi, how to send the video to the question, I have the response : “The uploaded file is incorrect format ..” this the test , i have mal all test with ReadAsDataUrl for example or othe rmais si not working  thanks for you help function uploadVideo(questionId){ $.ajax({ url: rootURL+'urlforpresign', method: 'post', data: { 'questionid': questionId }, success: function(json) { if (json.code == 0) { } else { var presignedUrl = json.presignedUrl; var file = $('#file_'+questionId)[0].files[0]; var fileName = file.name; var reader = new FileReader(); reader.onload = function (event) { $.ajax({ url: presignedUrl,