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No video in vMix from BM Mini Recorder 4k + Sony HDR-SR11
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r@wisla  
#1 Posted : Tuesday, February 14, 2017 11:30:00 AM(UTC)
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Hi,

I have an old Sony HDR-SR11 camera and just bought Blackmagic Mini Recorder 4K. It seems I can't get video from that camera in vMix.

However I do see video in Blackmagic Media Express and Blackmagic Control Panel shows me, that there is 1920x1080@50i signal on HDMI input.

I have no problem with this card and Canon G30.

Also, I did something like this in vMix:
- connected Canon G30 camera to BMMR4K card with miniHDMI-HDMI cable
- added HDMI input from BMMR4K, 1920x1080 50i, interlaced checked - I see the video
- unplugged mini HDMI from Canon camera and plugged in mini HDMI to Sony camera - no video
- again: unplugged Sony camera and plugged in Canon camera - the video shows again.

Any tips what should I check?
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DWAM  
#2 Posted : Tuesday, February 14, 2017 12:32:51 PM(UTC)
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I'd try to change the HDMI cable or to boost HDMI one way or another. I guess you have an miniHDMI2HDMI adaptor somewhere in between the cam and the card, no ?

I use active HDMI boosters or any active HDMI i/o like a HDMI splitter might do the trick.
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r@wisla  
#3 Posted : Tuesday, February 14, 2017 12:51:01 PM(UTC)
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DWAM wrote:
I'd try to change the HDMI cable or to boost HDMI one way or another. I guess you have an miniHDMI2HDMI adaptor somewhere in between the cam and the card, no ?

I use active HDMI boosters or any active HDMI i/o like a HDMI splitter might do the trick.

No adaptor, just a miniHDMI - HDMI cable.

Your suggestion may help, but I dont see any cable/booster/adaptor/splitter reason why there is video in BMD Media Express and no video in vMix.
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DWAM  
#4 Posted : Tuesday, February 14, 2017 12:56:43 PM(UTC)
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You're right.
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r@wisla  
#5 Posted : Tuesday, February 14, 2017 4:13:51 PM(UTC)
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Exactly same issue with Overmax ActiveCam 3.2 (chinese gopro-like) cam. Only difference: it is 60i (i tried both NTSC 60i and NTSC 59.94i setting).

Media Express sees the video, vMix not.
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r@wisla  
#6 Posted : Wednesday, February 15, 2017 3:51:15 AM(UTC)
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Desktop video 10.8.3
Windows 10
An old i7-950
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DWAM  
#7 Posted : Wednesday, February 15, 2017 4:11:45 AM(UTC)
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So you are positive the 4K card works fine at least with your Canon HFG30?

Do you have any professional monitor indicating the very nature of the signal coming from these 2 cams?

Do you have an Edid device to force signal definition?
It could help to make sure the signal is not wrongly signalized. Media Express could be more fault-tolerant ?

I know it's weird Media Express sees the video and not vMix, but I had such an issue with GoPro3 years ago. My Decklink could see something (though it was distorted and not usable) and the ATEM got nothing. I solved this issue with a $20 HDMI splitter which corrected the signal.
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r@wisla  
#8 Posted : Wednesday, February 15, 2017 6:32:36 AM(UTC)
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DWAM wrote:
So you are positive the 4K card works fine at least with your Canon HFG30?

Absolutely. Canon HF-G30's behaviour is completely plug and play. I can even set wrong resolution or framerate and I have video.

DWAM wrote:
Do you have any professional monitor indicating the very nature of the signal coming from these 2 cams?

Do you have an Edid device to force signal definition?


No tool I could 100% sure say its professional, but just found on the attic an old HDMI scaller. It indicates the HDMI source is like I said earlier:
- 1920x1080 50i - Sony camera
- 1920x1080 60i - Overmax ActiveCam

Same for indications by the Lilliput LCD.
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r@wisla  
#9 Posted : Wednesday, February 15, 2017 9:09:12 AM(UTC)
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Eureka (I hope so)!

Both, Sony SR-11 and Overmax ActiveCam started to work, when I switched video format to RGB32.

Actually the resolution and framerate didn't matter - I changed to 720, p or i, and video signal is still there.

Update:
1. This issue looks similar https://forums.vmix.com/....aspx?g=posts&t=8665
2. Both cameras (sony and actioncam) work with chinese hdmi to sdi converter, with video format set to default or UYVY.
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SHMD  
#10 Posted : Wednesday, February 15, 2017 10:42:34 PM(UTC)
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Have you tried RGB colour space, often when I am using a new hdmi source that only shows a black screen, switching to RGB solves the issue 99% of the time.
Hope that helps as it has saved me lots of trouble shooting time with BMD cards.
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r@wisla  
#11 Posted : Thursday, February 16, 2017 7:06:49 AM(UTC)
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SHMD, isn't it what I have written in previous post? :)

To finish this thread: I guess it would be wise to mention the RGB color space issue in this knowledge base article:
http://www.vmix.com/know...-using-a-blackmagic-card
I read it before posting this thread.
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SHMD  
#12 Posted : Thursday, February 16, 2017 10:38:53 PM(UTC)
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r@wisla wrote:
SHMD, isn't it what I have written in previous post? :)

To finish this thread: I guess it would be wise to mention the RGB color space issue in this knowledge base article:
http://www.vmix.com/know...-using-a-blackmagic-card
I read it before posting this thread.


Ooops, sorry I missed that link in your post. ;)

Just used RGB colour space today to get 2 GoPro5 cameras working with 4K feeds into BMD decklink 4K cards.

-s
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