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David Anderson
preferred up speed for stream
on Oct 12, 2009 at 2:27:53 am

I'm starting to put together a live stream project from a hospital OR to local high schools in my area. At this point, planning on using a combination of Wirecast sending through Watershed (UStream). The live event will be a simple combination of one camera switching to a pre-edited video I plan to play as a QuickTime off the computer. Then using Watershed's tools to implement look, chat feature, etc.

My question is how much bandwidth (up speed) should I request from the hospital? I plan on sending a 700kbps stream and imagine I should have at least double that for overhead.... right? So I ought to be asking for at least a dedicated 1.5Mbs up?

David C Anderson

ConstantNow


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Jeff Mack
Re: preferred up speed for stream
on Oct 13, 2009 at 7:48:44 pm

I have been using wirecast to send a 16x9 dv signal. I have a 750Kb up and I use the presets and modify it for 128 k for audio and 550 for video for a totl of 678 and it works pretty good.

Jeff


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David Anderson
Re: preferred up speed for stream
on Oct 13, 2009 at 8:07:08 pm

Thinking I'll be sending a 16X9 video as well. Can you tell me a little more about your setup? Hardware you're using? As I mentioned I'm planning to send a 90 min program that a combination of one camera feed and an edited quicktime movie. I'm wondering if my MacBookPro is fast enough to handle this.... Running 10.6.1, 2.4G Core 2 Duo, 4 gigs of RAM. But wondering about the graphics card capability-- Wirecast demo seems to start up fine, haven't done a "real" test yet.

One thing I hadn't thought of in my setup.... if I'm switched to the video running off the laptop, does Wirecast allow me to mix in the live audio narration from the host? The show would basically be his on camera intro, then cut to the video (which would have nat sound) with him narrating over top.

Make sense?

David C Anderson

ConstantNow


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Jeff Mack
Re: preferred up speed for stream
on Oct 13, 2009 at 8:14:30 pm

Hi David,

This is what wirecast was made for. I use a MBP and a Sony Z-1 connected via F/w and it works great. I travel to many venues and hok into their internet. I have gotten as high as 1.5 up wirelessly and the results were perfect in the DV realm. I tried using HDV and you really have to hav a dedicated line for that. Your setup should work just fine. You send the audio in and switch it - I haven't done that but I am sure it can be handled.

Jeff


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David Anderson
Re: preferred up speed for stream
on Oct 13, 2009 at 8:19:34 pm

Jeff,

Thanks for the input. Should be doing a test later this week, I'll have a Panasonic HVX-200, hooked to the MBP via Firewire, so hopefully same positive results....

David C Anderson

ConstantNow


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Jeff Mack
Re: preferred up speed for stream
on Oct 13, 2009 at 8:30:13 pm

One battle I solved by going through their tech support is that the Pixel Aspect Ratio settings are imperative to get a good encode. It is basically a three step process. First set the resolution in the project properties, then i the media asset (camera settings tab) and then in the encoding setup.

Jeff


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Craig Seeman
Re: preferred up speed for stream
on Oct 13, 2009 at 9:03:27 pm

Make sure you're sending DV and not DVCPro50 or DVCProHD down firewire.



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