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# 41975 26-Sep-2009 21:38
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I have a video source that gets encoded at 4mbits using a tv tuner at a remote site. It gets recorded to mpg files on the hard drive.

At another site, we have a computer that plays them back and between the sites we have a 4mbit connection.

If a video file is recorded between 1.00 and 1.30, it then starts getting transfered using a folder sync program at 1.30 and will finish transfering at 2am. So it takes the length of recording to transfer. This means a 1hr recording will take 1hr to transfer.

What I am wondering is if there is any program that will be able to transfer the file as it is being written to the hard drive at site A, and send it over the network to site B. That way it can start transfering 1 min after the recording starts and be at the other site around 1 min after the recording finishes?

I noticed I could use windows explorer and copy the file and paste it to the shared drive and it will copy all that has been recorded up untill i pasted it, but it is still recording when i do this and doesnt wait for the rest - it just copies up to when i pressed ctrl + c - and the partial file is playable up to that point also

I have thought about breaking the recordings into smaller pieces but the recording scheduler takes 1 min from the end of a recording before it will start the next so its a bit too much.




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




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748 posts

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  # 258661 27-Sep-2009 09:23
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Have you looked at streaming?




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  # 258761 27-Sep-2009 19:32
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Thought about streaming but if the link goes down for any reason (its a wireless lazer link / free space optics) then it would cause more problems and we would miss the entire recording and we cant use a recording unless its all there.




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




 
 
 
 


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  # 258764 27-Sep-2009 19:49
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you need to look at something like mythtv.. a backend at one end and a frontend at another end.. backend records/stores everything and the frontend just displays it (streams it over the link)



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  # 258794 27-Sep-2009 22:10
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The recordings are for a tv station that recieves its programming via satelite from germany. There is a very large 3m dish on a hill at one site, then at another site they broadcast on UHF to the surrounding area.

Between the sites they use the lazer link to transfer most programming - about 4x half hour shows and 2x 1 hour shows per day. With Daylight savings, the Al Jazerra news that comes in from germany or wherever at 3-4pm and gets transfered to the broadcast pc 4-5pm, then added to the playlist and broadcast at 6-7pm. This leaves 1 hour of time to restart the transfer if something goes wrong.

With Daylight savings, this hour of error space is now lost as the program comes in off the dish at the same time, but 6pm is now an hour earlier. So right now there is only seconds between the end of transfer and the start of broadcast. For now, an external hard drive is going to be manually driven between the sites because there cant be any failures and not have anythign to broadcast to the viewers.

The recording dish cant be at the broadcast site because of its size and the angle to the horizon that it needs to point - trees in the way.




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




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  # 258805 27-Sep-2009 22:39
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Sounds too unusual to really be served by an off the shelf config. But the mythtv lists would be a good starting place to ask about this sort of thing.

How about ftp resume to get the files, that way you can just keep restarting it to get more and more. You would still have to have soemthign to play the partial files however.




Richard rich.ms



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  # 258810 27-Sep-2009 22:55
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oooh ftp resume. i likes the sound of that.
might have a play around with filezilla ftp server and a download accellerator and see what happens.
thanks for the idea.




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




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