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Old 17th March 2013, 01:55
telmnstr telmnstr is offline
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Join Date: Mar 2013
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Default BlackMagic ATEM TVS and Livestream, eeek!

Hello!

I got excited when I read that Livestream directly supported the Blackmagic ATEM units. I was thinking it would forward the h264 hardware encoded video that the unit produces to Livestream, where they would stream it to the viewers.

But apparently, it seems to want to locally re-encode the video? Is this correct? This takes a ton of processing power, especially when scaling video. The beautiful blackmagic units hardware encode the video -- it should never be un or transcoded locally.

I own the Television studio, which doesn't have the hardware for doing digital video effects. Without the DVE hardware, I don't think it can scale the video down from 1920x1080 in hardware -- I'm going to look.

My laptops are all core2duo Macbooks and such. In the past a friend and myself messed around with a blackmagic HDMI capture card and on a high end quad i7 it was pretty taxed scaling from 1920x1080 down to 720p (Under Linux with VLC IIRC.)

I volunteered to stream something locally next weekend and am scrapping for solutions now!

Can a modern computer do the 3 version livestream reading from an ATEM unit @ 1920x1080?

I'm also curious if I can do a blackmagic capture @ 1920x1080 while livestream is also streaming. From the same computer.

Also, I want a local copy @ 1920x1080, I don't want to loose that.
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