HVX200 CCD Specs and DSP info now released

[Jan Crittenden livingston]

[redindian] “Do you mean to say that since its recorded as DVCPROHD it becomes 4:2:2?

Eg: If I shoot with my webcam, play it on TV, and shoot that with 35mm – it does not make the quality of the footage as 35MM.

So if the color is captured at 4:2:0, and thrusted into a 4:2:2 format – where does that unrecorded information come from?”

Actually Redindian if you want to take it to such a ridiculous input, yes it is. It will probably look just as bad as your webcam does but DVCPRO HD is not 4:2:0, or 4: .5 or whatever, it is 4:2:2. It is a SMPTE standard. And frankly the reason that Canon shot their camera demo on the DVCPRO HD format is becaus coming out of the camera it is uncompressed.

The problem here is that nobody wants to understand the engineering behind this. If you want to look at the input to the DVCPRO HD, you back up one step, it is not a web cam. It is the 1080P capture from that previous stage in the system. If you want to see what is the input to the 1080P stage it is not webcam it is the output from the chip set which is an analog output that is generated off of the spatial offset. That spatial offset is 1440 X 810. This is not webcam. It generates some very nice looking pictures.

But to get back to the ridiculous point. Yes, if you fed a garbage picture to a 35mm film would that keep the film from being 35mm. Don’t think so. If you fed the output of the XL-H1 to DVCPRO HD, does that make it 4:2:0, not the standard, 4:2:2 in DVCPRO HD? No, that is why the Canon demo was produced on DVCPRO HD. They know the difference beytween 4:2:2 and 4:2:0. The HVX200 records in DVCPRO HD which is 4:2:2 and DVCPRO50 which is 4:2:2 and DV and DVCPRO which are 4:1:1.

Hope this helps,

Jan

Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems

[Redindian]

sorry Jan – didnt mean to offend with that extreme example… I was just trying to understand what you said