I tried to accomplish this to see if I could figure out a solution. I have three Apple devices, an iPhone 6 running iOS 8.1 with Infuse 3.0.1 Pro, an iPad 3rd gen running iOS 8.1 and Infuse 3.0.1 Pro, and a 2012 Macbook Air running OS X 10.10 (Yosemite). Notably, the iPad does not support AirDrop because it does not support a recent enough version of BlueTooth (AirDrop requires the iPad 4th Gen or newer), while the iPhone and Macbook do support AirDrop.
Attempt: Send video file from iPhone to anything using FTP
Details: Opened Infuse on iPhone. Clicked “Share” button on a video file. Selected “Transmit” FTP/SFTP/etc app. Infuse launched Transmit, but Transmit always reported that I was trying to send 0 files.
Attempt: Retrieve videos from iPhone using FTP client on iPad
Details: Opened Infuse on the iPhone. Put it in FTP mode. Connected to FTP via Transmit on iPad. Got a listing of video files. Received an error that the server (Infuse) does not support the RETR (Retrieve) command. Conclusion is that Infuse doesn’t support this.
Attempt: Send videos from iPhone to Macbook using Airdrop
Details: Opened Infuse on the iPhone. Opened a Finder window to Airdrop location on Macbook. Clicked “Share” button on video file in Infuse. Selected Macbook. Infuse began sending the file. The file transfer began, but failed roughly halfway through. Infuse on the iPhone said “Declined” while Airdrop on the macbook said “The transfer failed. Please try again.”
Attempt: Retrieve files from iPhone to Macbook using HTTP
Details: Opened Infuse on the iPhone. Put it in HTTP (Browser) mode. Right-clicked on file in Chrome and selected “Save Link As”. File transferred.
That’s all I could figure out. Infuse doesn’t support streaming from FTP or HTTP, (well, sort of, it does WebDAV over HTTP for playback, but it can’t serve it), and Safari and Chrome on the iPad can’t save files.
Have you tried using Filer on the iPad to download the files from Infuse’s webserver? You can open the iPhone’s Infuse webpage in Safari or Chrome or whatever on the iPad, long-tap the link to the file, copy the URL, and paste it into Filer to download. I don’t have Filer, so I can’t confirm this, but if it worked for you to get the files onto the iPhone in the first place, it should work to download the file to your iPad.