Jan Crittenden livingston
Forum Replies Created
-
When making a system you start at the beginning and establish signal presence at the out put of each device before you move onto the next. So if you have and can monitor the camera with an output of 720, then take that output and plug it inot the Ultimatte. I suspect that your problem lies in the Ultimatte not having the menus for input set to 720 in and 720 out.
Good luck,
Jan
-
YOu need to update your computer for the 16 GB cards as well.
See:
https://www.panasonic.com/business/provideo/support/software_16gbp2.aspBest,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
That is a feature of FCP, in that mode it does not accept TC.
Best,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
[c1dumbkid] “The HVX in 720p dvc pro still only looks about the same as the big panasonic cameras in SD mode.”
I think that you need a better monitor. There are nuances that are not part of a 2/3″ CCD in the 1/3″ but there is more resolution in 720P than in 480.
As far as the HVX just weorking in DV, I might suggest that you look at DVCPRO50, that will get you more color resolution that the DVCAM cameras offer which will net you a cleaner chroma-key.
Best,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
Hi Leo,
Would you contact me off line? I would like more information and I don’t think it is necessary to carry thi on here, mostly because I call and find someone able to talk and you call and don’t have the same situation. What does happen when people call in is that a computer logs the call and duration. We can track down your call to the minute and we can see how many other customers were on the line when you called.
Did you leave a question in your call back message?
Anyhow please email me at crittendenj at us.panasonic.com
Thanks,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
Hi,
I just called it again and got right through, but note that there really is not an option 3 any longer, although I did find that it still rang me through when I pushed option 3.
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
Hi,
I just called it and they answered. What time of the day did you try?
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
[pom_boarder] “However, is Tims evaluation of DVCPRO HD correct? To summarise he explains that DVCPROHD at 24fps comprises of 60% redundant frames which effectively makes the 100mbps stream into a 40Mbps stream, only marginally better than HDV at 35Mbps.”
Couple of things here. DVCPRO HD is 100Mbs at 1080/60i or 720/60P. HDV at its best is 1080/60i is 25MBs not 35, this would be the XDCAM HD. Difference, One is Constant Bit Rate, HDV, and the XDCAM is Variable Bit Rate, but both at Long Groups of Pictures in their algorithm. DVCPRO compresses each frame independently, also known as Frame Independent resolution or IntraFrame Compression.
HDV or XdCam takes about 1/3 of the bit budget and applies it to the I frame and then divides evenly in CBR, and not so evenly in VBR, the number of bits per frame across each of the subsequant frames. I think you can do this math. Keep in mind that if there is a lot of motion and a lot of detail, this is handled in two ways. First the HDV algorithm decides to just loose some of the resolution, and then if that doesn’t resolve the problem of overwhelming changes, the algorithm turns blocky. I have seen it in XdCam HD even, just needs enough detail and motion.
Interestingly enough if it was just the math, the algorithms would look pretty much the same, but there is something about tying frames together in a Long GOP arrangement to gain effieciencies that tends to backfire. One of the other things that works against the HDV and XDCAM HD is the 4:2:0 color sampling vs 4:2:2.
The DVCPRO HD algorithm is 4:2:2. Each frame stands alone at a little over 1.6Mbs pre frame. If in using the PN mode of the P2 system, efficiencies are had in that it is only saving 24 frames, which if you do the math leads you to 24 independent frames with a total payload of a little under 40 Mbs.
Now if you do the math, the XDCAM HD looks like a similar number per frame but remember that it is Variable Bit Rate, to an extent, so if there is a lot of motion and a lot of detail the variable nature of the long GOP can quickly gobble up the extra bits in the first half of the GOP leaving the last half to suffer. (this is the most simplistic explanation)
Compression is more than math, it is what that is left after compression and how the individual frames are handled, the color sampling and how things are weighted. Some DVCPRO HD detractors would like to say that XDCAM HD is as good, but nothing will beat a frame independent resolution algorithm every single time.
[pom_boarder] “Is this a case of Tim picking the worst case example or is this true across all frame rates for both PAL and NTSC? What about 25PN? .”
Might be more that Tim was trying to convey something that he thought he spelled out well, but it got lost in the confusion as I think that Tim knows that DVCPRO HD is a far superior CODEC to the XDCAM HD and certainly better than HDV. So not sure what his objective was but if you came away with the idea that HDV was similar to DVCPRO HD because the number of bits used, well I think Tim perhaps failed in his mission of explaning HD formats.
I hope this helps,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
Did I miss that you updated the P2 Store firmware? If not. Try that.
Bestr,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems -
HI,
The SDX900 had two models, one for 50Hz and one for 60 Hz. The 50 Hz model would do 24P, or PA and the 50 Hz model did 25P.
Hope that clarifies,
Jan
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems