What are the best online all type format conversion services ?

by Bunker Boy   Last Updated February 23, 2017 14:03 PM

i am searching a good site where all type of format conversion possible with php api or curl support.

i also want to use callback api(GET and POST both) and when the conversion completed it callback my api may be get or post where i can get the all detail like a video is converted and in the response, i get the video size, widht, height and duration of the video

also support azure and s3...

please help me out...

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