# Problem sending .MP4 files using Air Explorer Program

**URL:** <https://forum.storj.io/t/problem-sending-mp4-files-using-air-explorer-program/17257>\
**Category:** Product Discussions\
**Tags:** windows\
**Created:** [February 12, 2022, 7:41pm UTC](https://forum.storj.io/t/problem-sending-mp4-files-using-air-explorer-program/17257 "2022-02-12T19:41:10Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![Alexey](https://storj.bcdn.literatehosting.com/user_avatar/forum.storj.io/alexey/32/41_2.png) [@Alexey](https://forum.storj.io/u/Alexey)\
**Post date:** [February 14, 2022, 1:40am UTC](https://forum.storj.io/t/problem-sending-mp4-files-using-air-explorer-program/17257/11 "2022-02-14T01:40:06Z")

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The Air Explorer seems cannot be tuned, and their default options for s3 are not optimal for Storj DCS, thus it cannot be used for big files transfers.

You can still use CLI tools like [rclone](https://docs.storj.io/dcs/how-tos/sync-files-with-rclone).  
Since you several times mentioned “slow”, I can assume that your upstream bandwidth is not great, in this case I would definitely recommend to avoid a native integration (because it opens 110 connections to nodes for each segment) and use Gateway MT instead (it opens one connection per part), thus you need to [configure rclone with a Gateway MT](https://docs.storj.io/dcs/how-tos/sync-files-with-rclone/rclone-with-hosted-gateway) too.  
See also

> [@Hotrodding Decentralized Storage](https://forum.storj.io/t/hotrodding-decentralized-storage/15228):
>
> Preface Greetings everyone. We have been working on some exciting performance enhancements and wanted to share them with the community and solicit feedback. I hope you have as much fun with this as I have had! Before we commit this to our documentation we’d like to get your feedback and questions. -Dominick Storj DCS Performance Overview Performance Basics In decentralized storage, the concept of parallelism has a huge effect on performance. As you will read below we can enact parallel ef…

If you want to use UI, you can try to use FileZilla PRO, it has s3 support or MSP360, or any other S3-compatible tool which has more configuration options, than Air Explorer.  
Or just try to use an [Objects browser](https://docs.storj.io/dcs/getting-started/quickstart-objectbrowser).

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