I am able to concatenate videos when the input files(.mp4) are on my machine. My use case is to merge multiple videos uploaded to S3 storage. I have to use presigned urls of input videos as input in concatenate command. 

When I tried concatenate operation using input video's presigned urls, I am getting "Unknown input file type" error.

MP4Box -add "presigned url for video1" -cat "presigned url for video2" output.mp4.

Can someone help to use presigned urls as input to MP4Box for concatenating videos? 
Cocatenate .mp4 videos using S3 presigned urls.
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Cocatenate .mp4 videos using S3 presigned urls.
Issue date:

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I am able to concatenate videos when the input files(.mp4) are on my machine. My use case is to merge multiple videos uploaded to S3 storage. I have to use presigned urls of input videos as input in concatenate command. 

When I tried concatenate operation using input video's presigned urls, I am getting "Unknown input file type" error.

MP4Box -add "presigned url for video1" -cat "presigned url for video2" output.mp4.

Can someone help to use presigned urls as input to MP4Box for concatenating videos? 
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