Video, uploaded on S3 bucket, not playing through url in iOS app
The reason for this was that while uploading the video, the Content-Type for video was not setting due to which the video was not playing. Setting the Content-Type in form-data as well as in Policy, the video uploaded and played successfully.
Problems uploading video files to a existing bucket with AWS on iOS
try setting content type to video/mp4 just to mitigate possible unforeseen issues with MIME types.
I would also advise reading this, it contains some different methods for uploading, and dealing with threads as you do.
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