What is HDV2? at DVinfo.net

Paul Kepen · August 2nd, 2006, 02:31 PM

Where does it say that it is "HDV2" ? It says it uses a cmos sensor that has 1920x1080 pixels, but i don't know if it uses all those pixels to tape. I believe it downconverts to the standard HDV tape format of 1080x1440. However, oversampling, and using square vs anamorphic pixels could potentially improve resolution, and the larger 1/2.7 cmos sensor would improve low light performance. Also the optical image stabilizer is a plus.

Chris Hurd · August 2nd, 2006, 03:41 PM

HDV1 and HDV2 are just distinctions we use around here. It's just a convenient way to tell 720 from 1080. I don't think the official HDV spec calls it that. But yes this is the already-established 1080 flavor of HDV. So yes it's 1440 x 1080 that gets recorded to tape. Think of this like the native 16:9 on the Canon XL2. That camera has a native pixel matrix of 960 x 480 and yet what gets recorded to tape is 720 x 480.

Paul Kepen · August 5th, 2006, 01:03 PM

Thanks Chris.

Zack Vohaska · August 5th, 2006, 04:42 PM

Wait? Is "HDV2" different than "HDV Type-2?" I thought the difference between 1&2 was that 'type-2' has a longer GOP and different compression rates than 'type-1.' Maybe I'm wrong? For example: JVC makes HDV type-1 camcorders, while Canon & Sony make HDV type-2; type 1 and 2 are not compatible with eachother, so you could not use type 1 in a type 2 tapedeck, and vice-versa.

Maybe I'm making things more complicated than they need to be, and I don't know what I'm talking about, haha.

Chris Hurd · August 5th, 2006, 06:37 PM

Same thing -- it's just a way to distinguish the 720 GOP 6 version from the 1080 GOP 15 version.

August 2nd, 2006, 02:31 PM	#1
Paul Kepen Major Player Join Date: Dec 2004 Location: Minneapolis Minnesota Posts: 347	Hdv2 ? Where does it say that it is "HDV2" ? It says it uses a cmos sensor that has 1920x1080 pixels, but i don't know if it uses all those pixels to tape. I believe it downconverts to the standard HDV tape format of 1080x1440. However, oversampling, and using square vs anamorphic pixels could potentially improve resolution, and the larger 1/2.7 cmos sensor would improve low light performance. Also the optical image stabilizer is a plus.

August 2nd, 2006, 03:41 PM	#2
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,368 Images: 513	HDV1 and HDV2 are just distinctions we use around here. It's just a convenient way to tell 720 from 1080. I don't think the official HDV spec calls it that. But yes this is the already-established 1080 flavor of HDV. So yes it's 1440 x 1080 that gets recorded to tape. Think of this like the native 16:9 on the Canon XL2. That camera has a native pixel matrix of 960 x 480 and yet what gets recorded to tape is 720 x 480. __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

August 5th, 2006, 01:03 PM	#3
Paul Kepen Major Player Join Date: Dec 2004 Location: Minneapolis Minnesota Posts: 347	Thanks Thanks Chris.

August 5th, 2006, 04:42 PM	#4
Zack Vohaska Regular Crew Join Date: Mar 2006 Location: Chicago, IL Posts: 74	Wait? Is "HDV2" different than "HDV Type-2?" I thought the difference between 1&2 was that 'type-2' has a longer GOP and different compression rates than 'type-1.' Maybe I'm wrong? For example: JVC makes HDV type-1 camcorders, while Canon & Sony make HDV type-2; type 1 and 2 are not compatible with eachother, so you could not use type 1 in a type 2 tapedeck, and vice-versa. Maybe I'm making things more complicated than they need to be, and I don't know what I'm talking about, haha. __________________ -Z-

August 5th, 2006, 06:37 PM	#5
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,368 Images: 513	Same thing -- it's just a way to distinguish the 720 GOP 6 version from the 1080 GOP 15 version. __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!