Mp4 File not play from Amazon S3

JW Player — Apr 04, 2014 09:08AM EDT

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Hi,

I using Amazon S3 for store Mp4 files, and VOD Streaming over HTTP. I'm using JW Player, can't play some mp4 file.


Example:
bc.. jwplayer(myElement).setup({
file: "http://bucket.streaming.s3-ap-southeast-1.amazonaws.com/video/sample_1.mp4",
height: 360,
width: 640
});



But some mp4 file can play, example:
bc.. jwplayer(myElement).setup({
file: "http://bucket.streaming.s3-ap-southeast-1.amazonaws.com/video/Betrayal.mp4",
height: 360,
width: 640
});



I recognized sample_1.mp4 can play when full cache. How can I fix it ?

Sr my poor English.