BM Intesity Pro HDMI 1080i Chromakey

P

plombar

Member
I have a simple question for someone who has already tried.

Be somewhat in doubt as to the image quality from HMC-150 over the HDMI port in the BM Intesity pro, because I know that HMC send only 1080i and is necessary to deinterlaced in NeoHD to get 1080p. Due to the richer chroma 4:2:2 will probably perform better chromakey than in the AVCCAM 1080p 4:2:0, instead we are get intelaced video from hmc via HDMI?

Thanks in advance for yours opinions.

/peter
 
Hi peter,

I bought the BM intensity pro one year ago, but I was forced to send it back due to incompatibility issues with my motherboard. Since then I've bought the matrox mxo2 mini, but I haven't had any chance to try it in a greenscreen setup. So I can't tell if the output is interlaced. I'll check my hmc to see which is the output. I'll report later.
 
Hi Iñaki,

thanks for reply. There is no doubt, HMC can send via HDMI only interlaced (1080i) and BM can capture only interlaced. The only solution is to deinterlaced in Cineform NeoHD workflow.

It is the result of this process completely progressive picture quality? Progressive and rich color subsampling quality (4:2:2) is essential for chromakey.

The question is how successful is chromakey from such procedure, is it worth?

I also thought the Matrox mxo2 mini, but unfortunately it is not supported by NeoHd as capture device.

/peter
 
1080i HDMI output only

1080i HDMI output only

Ugh. I just bought an HMC150 after doing some pretty intensive online research, and somehow I missed the fact that the HDMI output was only 1080i. I'm not sure this would have changed my decision, but one hopes to make the right decision based on the right data!

Chroma key is a low priority for me--something that may be fun to play around with at some point. At least with this knowledge I will know that there are precisely two poisons from which to choose: 4:2:0 progressive captured by the camera or 4:2:2 interlaced out the HDMI port.

Thanks!
 
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Hi Michael,

at that point I have only "advice" to deinterlace in Cineform NeoHD workflow from Cinefrom (David Newman) which said:

"We do not throw any a fields, we are better than regular field blending, but not a just as a motion tracking deinterlacer. If you shoot with a 50Hz shutter (or 60Hz for NTSC) the results are quite nice and preserve a good resolution."

But still do not know what is the outcome in reality?

I really whish to hear the opinion of someone who has already tried.

Thanks...

/peter
 
MichaelTiemann said:
Ugh. I just bought an HMC150 after doing some pretty intensive online research, and somehow I missed the fact that the HDMI output was only 1080i.
Click to expand...
If I'm not mistaken, there is no such thing as a camera that outputs 1080p over the HDMI output, at any price. It just doesn't exist.

The HMC150 outputs 1080/24p embedded in a 60i output. You strip out the pulldown on the computer, to turn it back into 1080/24p.
 
Barry_Green said:
If I'm not mistaken, there is no such thing as a camera that outputs 1080p over the HDMI output, at any price. It just doesn't exist.

The HMC150 outputs 1080/24p embedded in a 60i output. You strip out the pulldown on the computer, to turn it back into 1080/24p.
Click to expand...

Wow--that's great to know!

BTW, I want to say "Thanks!" for prevailing upon Panasonic to have them put your book in the box. It was a great resource to read while waiting for the batteries to charge.

As a fellow North Carolinian, if you find yourself in Chapel Hill or Pittsboro, send me a message and I'll show you an amazing video facility that's almost ready to open.
 
MichaelTiemann said:
Wow--that's great to know!

BTW, I want to say "Thanks!" for prevailing upon Panasonic to have them put your book in the box. It was a great resource to read while waiting for the batteries to charge. .......
Click to expand...

That one gave me a chuckle. I hadn't yet gotten to the battery-charging stage; while waiting for my 150 to arrive, I bought Barry's HMC-150 book. Then, once I got the camera, I found the HMC Book in the box! So, now I have one on my desk at the office & one with the camera!. It appears that everything in the 150 book is covered in the HMC book, but it's nice to have both. And, a nice review of some basics in the newer HMC manual.
 
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