View Full Version : HDMI Advantages on AVCHD Cameras


Jeff Kellam
January 29th, 2009, 10:51 AM
I generally just capture to the SDHC card on my AVCHD camera. But as I have started using the AVCHD output more, I have learned a few things that seem to make it a huge advantage over HDV cameras 1394 output.

I use the HDMI output for monitoring off my AVCHD camera. HDMI output is uncompressed digital, so the image quality is exactly what the imager sees and great for uncompressed capture. A 1394 TS off a HDV camera is a highly compressed 4:2:0 digital signal. The HDMI uncompressed signal is 4:2:2 colorspace which is great for keying. HDMI also supports cables up to 20M in length and 100+M is possible with special equipment.

A lot of folks seem to be using the BM Intensity Pro card for HDMI capture. Blackmagic Design: Intensity (http://www.blackmagic-design.com/products/intensity/) Seems like a good option.

Johnny Clark
January 29th, 2009, 11:30 AM
It's a beautiful day in the neighborhood....
Isn't that a treat to know you have that capability?

Rob Katz
January 29th, 2009, 12:14 PM
i wish there was a $249 hdmi record solution for my macbook pro.

that would be very sweet.

be well

rob

Johnny Clark
January 29th, 2009, 03:27 PM
I second that Rob.
Albeit the footage is pretty remarkable, it would be nice for those keying shoots.

Ken Ross
January 29th, 2009, 07:59 PM
I generally just capture to the SDHC card on my AVCHD camera. But as I have started using the AVCHD output more, I have learned a few things that seem to make it a huge advantage over HDV cameras 1394 output.

I use the HDMI output for monitoring off my AVCHD camera. HDMI output is uncompressed digital, so the image quality is exactly what the imager sees and great for uncompressed capture. A 1394 TS off a HDV camera is a highly compressed 4:2:0 digital signal. The HDMI uncompressed signal is 4:2:2 colorspace which is great for keying. HDMI also supports cables up to 20M in length and 100+M is possible with special equipment.



Actually Jeff, cameras like the Sony Z5 HDV camera also offer uncompressed, native sensor resolution from the HDMI output. ;)

Steve Wolla
February 1st, 2009, 09:11 PM
I agree, having that HDMI output is quite nice.
As Ken notes, it is also available on Sony cams, and perhaps others. I just don't think I'd buy a cam without it now, I use it to output to my ne 8" monitor and its great.