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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Scarlet-MX in 5K mode for streaming, how?

Samir Patel

Samir Patel

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I vaguely remember it possible to use the Scarlet-MX in the 5K mode through the HDMI and SDI output but at a normal frame rate and not the recording frame rate of 12fps. Can anyone chime in regarding this. Basically to not record in camera but to just use clean HDMI out for feeding into a webstreaming platform but to use the full MX sensor size.. (considering that would be useful especially in todays stay at home times). I think it had something to do with lookaround but I forgot. Thanks
 
Hullo Samir,

Yes enable sdi look-around at 4k and you get 5k FoV on scarlet MX. Sold my scarlet Ramy years ago but last time I used it, I remember red moving it somewhere. It was in monitoring.

Let me have a quick search.

Cheers
Craig Lees
UK
 
Yep, Look Around is limited to the max fps of the resolution below it. So, for Scarlet-X, you set the camera to 4k at up to 30p so that with look-around enabled you get FF5k@1080p up to 30fps out of the SDI/HDMI. If you set the camera to 5k/12fps, you're only gonna get 12fps out of the SDI/HDMI. Definitely worth reading the manual for the details as it tells you where look-around settings are and tells you how to make SDI be a clean/log feed while your RED monitor still has colour space/gamma/gui applied.

Bare in mind, the HDMI/SDI outputs are 1080p only and 1/2 debayer (that's a camera limitation; all feeds are only 1/2 debayer), but it actually makes for really good quality 1080p. It even seems perceptibly cleaner, so ISO1600 is good to go (which means more highlight protection). Unfortunately, while MX supports Log3G10 in-camera, it does *not* do RWG internally (which is pretty dumb).
 
Very interesting. So, Mike, if I read you correctly, you can do internal RAW at 4K, while recording 5K FF 1080 via SDI/HDMI at the same time? I can see this being quite useful for commercial work, although with no slow motion.
 
Karim D. Ghantous said:
Very interesting. So, Mike, if I read you correctly, you can do internal RAW at 4K, while recording 5K FF 1080 via SDI/HDMI at the same time?
Click to expand...

Yeah, that's right! And if memory serves, the only recorder that gets proper filenames and can trigger record via the camera, was the Sound Devices Pix series. All the rest needed to be triggered separately.

Technically the HDMI/SDI can do 60p out, but I couldn't get it work (and I tried open gate and timebase of 60p, etc.... and it registered in the off-board recorder as a 60p source, but played back at whatever frame rate the camera was set at.)

To be brutally honest, I'd opt for a p4k or p6k before I spent money on a separate off-board recorder to get FF5k@1080p out of a Scarlet-X. That said, from 2011~2015, it was a decent option.
 
Mike P. said:
Yeah, that's right! And if memory serves, the only recorder that gets proper filenames and can trigger record via the camera, was the Sound Devices Pix series. All the rest needed to be triggered separately.

Technically the HDMI/SDI can do 60p out, but I couldn't get it work (and I tried open gate and timebase of 60p, etc.... and it registered in the off-board recorder as a 60p source, but played back at whatever frame rate the camera was set at.)

To be brutally honest, I'd opt for a p4k or p6k before I spent money on a separate off-board recorder to get FF5k@1080p out of a Scarlet-X. That said, from 2011~2015, it was a decent option.
Click to expand...

very interesting... kind of was asking to just use the old Scarlet as a live stream camera anyway. but given every single streaming device on the planet is out of stock anyway... kind of in a holding pattern anyway. :( Atem Mini Pro is pre-ordered. Will report back when I get one.
 
Wow, didn't know that. Useful if you want to get a wider FOV. Interesting, is it possible to push it further with 3kWS @ 60fps with 5k lookaround to an external recorder. The only thing i hate in Scarlet MX is that you can't do 50 at @ 4k, while at 3k you're limited in terms of FOV options (some sets of lenses I occasionally use are 20mm widest)
 
No, there’s a limitation with Look Around; it only works at one resolution size bigger than what's set internally. So 3kWS 60p with Look Around, would only give you 4K FOV 60p at 1080p... But, yes, full sensor 5k FOV at 1080p is surprisingly better than 4k at 1080p.

As for webcam, Canon just release a EOS Webcam Beta software that allows you to turn any EOS ~5DR and newer into a webcam. Might be worth checking out.
 
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Samir Patel said:
Thank you Craig! Will definitely report back. Wish some video capture devices were in stock right now.
Click to expand...

This encoder plus free Open Broadcaster Studio software will get you what you need for a basic setup. We use these in corporate streaming setups for multi-cam ZOOM conferencing. For more than one camera you also need a network switch. An inexpensive 1GB 8 port POE switch is all you need.

https://www.bhphotovideo.com/c/product/1501369-REG/magewell_64060_pro_convert_sdi_tx.html

https://obsproject.com/


VMix software has a better GUI for a few bucks for the HD version. PC only, no Mac version.

https://www.vmix.com/
 
David Rasberry said:
This encoder plus free Open Broadcaster Studio software will get you what you need for a basic setup. We use these in corporate streaming setups for multi-cam ZOOM conferencing. For more than one camera you also need a network switch. An inexpensive 1GB 8 port POE switch is all you need.

https://www.bhphotovideo.com/c/product/1501369-REG/magewell_64060_pro_convert_sdi_tx.html

https://obsproject.com/


VMix software has a better GUI for a few bucks for the HD version. PC only, no Mac version.

https://www.vmix.com/
Click to expand...

Thank you David! Checking out the vmix now as well it looks like they have a trial for that as well.
 
BM Mini Recorder is the cheapest option for turning an SDI or HDMI feed into OBS /streaming over thunderbolt up to 30fps 1080 (about £140 here in the Uk) plus there’s a few Used for less on eBay.

Craig Lees
UK
 
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