Panasonic Cameras Forum
AG-HPG20 + Cinealta question
AG-HPG20 + Cinealta question
by Chris Cardno on Apr 7, 2009 at 3:36:31 pm

I've been playing with the P2 Portable for the past week and while it works like a charm with the Panasonic cameras it comes up blank when the F900R is in any frame rate apart from 59.94 or 29.97psf. My guess is this is due to the HPG20 not working with native frame rates but if someone can explain WHY it can't I'd appreciate it, especially as the EX3 works like a charm at 1080/24 in the HPG20, as does the PDW-F350 XDCAM at 23.98.

As a follow up to that, and my apologies for this not being strictly appropriate in this forum and for probably being a silly question, could you capture from the F900R at 59.94 and then take the footage into a 24p timeline?

Thanks,

Chris Cardno
Visual Edge Productions
Bethesda, MD


Re: AG-HPG20 + Cinealta question
by Jeremy Garchow on Apr 7, 2009 at 6:08:41 pm

[Chris Cardno] "My guess is this is due to the HPG20 not working with native frame rates but if someone can explain WHY it can't I'd appreciate it, "

Does the F900R output 1080psf23.98? Are you recording AVC-I or DVCPro HD? If DVCPro HD, you can't record 23.98psf. AVC-I should be able to handle it, though.

Jeremy


Re: AG-HPG20 + Cinealta question
by Chris Cardno on Apr 7, 2009 at 6:41:35 pm

Nope, AVC-Intra 100 can't see it either. The HD-SDI outputs from the camera are spitting out the frame rate to which the camera is set, be it 23.98psf, 24psf, 29.97psf or 59.94i. There's no recordable signal, though, if you have the camera set to 23.98 or 24.

Chris Cardno
Visual Edge Productions
Bethesda, MD


Re: AG-HPG20 + Cinealta question
by Jeremy Garchow on Apr 7, 2009 at 6:50:44 pm

[Chris Cardno] "There's no recordable signal, though, if you have the camera set to 23.98 or 24. "

You mean on the P2 Portable, correct? I don't know too much about it, but I imgaine there might be a setting that you put it in 23.98 mode like a deck? Let me do some checking...

Yeah, from the product page:

http://catalog2.panasonic.com/webapp/wcs/stores/servlet/ModelDetail?displayTab=O&storeId=11201&catalogId=13051&itemId=327735&catGroupId=34402&surfModel=AG-HPG20

"Recording and playback formats include 1080/60i, 1080/50i, 720/60p, 720/50p in AVC-Intra and DVCPRO HD; and 480/60i, 576/50i in DVCPRO50, DVCPRO and DV"



Jeremy


Re: AG-HPG20 + Cinealta question
by Chris Cardno on Apr 7, 2009 at 7:07:30 pm

There's no way to tell the P2 Portable what frame rate it's recording, so I guess it can see the frame rate that is being output from the Panasonic cameras (which are always shooting 60 anyway, so it's the flagged frames it's seeing) and the CineAlta must do that differently. What does surprise me is that the Portable was tested with the F900R (it's even mentioned in the manual) and yet there's no mention of it not being fully compatible with all the functions of that camera.

So, here's the next question: if you record the 59.94 signal can you turn that into 23.98 in post?

Chris Cardno
Visual Edge Producitons
Bethesda, MD


Re: AG-HPG20 + Cinealta question
by Jeremy Garchow on Apr 7, 2009 at 7:16:43 pm

If you can record 29.97 in the sense that you can add pulldown to your 23.98 signal, you can defintiely remove the pulldown in post either via Cinema Tools and you can do it more automatically via Compressor.

Jeremy


Re: AG-HPG20 + Cinealta question
by Chris Cardno on Apr 7, 2009 at 7:38:06 pm

So...there's a little bit of time in post to get it set up correctly but it does mean that we could shoot with the CineAlta, record on the P2 Portable to AVC-Intra 100 and the client can end up with 24p footage at the end of the day.

I think I just gave all the folks on the Varicam forum more tapeless ammunition. :-)

Chris Cardno
Visual Edge Productions
Bethesda, MD




Re: AG-HPG20 + Cinealta question
by Jeremy Garchow on Apr 7, 2009 at 8:42:06 pm

[Chris Cardno] "So...there's a little bit of time in post to get it set up correctly but it does mean that we could shoot with the CineAlta, record on the P2 Portable to AVC-Intra 100 and the client can end up with 24p footage at the end of the day.
"


This is true. You would have to make sure your client and their editor would know what they are getting in to with this.

[Chris Cardno] "I think I just gave all the folks on the Varicam forum more tapeless ammunition. :-) "

Yeah. Bring it on, I say! :-D

Jeremy


Re: AG-HPG20 + Cinealta question
by Jan Crittenden Livingston on Apr 8, 2009 at 3:58:10 pm

Hi,

It is my understanding that when the F900 is in 23.98, the only signal on the out put possible is 23.98. The P2 Portable does not recognize this signal as it would have to be those 24 frames in a 2:3 or 2:3:3:2 pulldown to be recognized, refer to Jeremy's earlier post on what the P2 Portable records. This is why the EX-1 has no problem, it outputs a 29.97 stream. (it can be switched to just 23.98 but that is a menu decision.)

So the short of this is that you will need to get the AJ-HPM110 to record to AVC-Intra, just the 23.98 from an F900.

Hope that helps,

Jan

Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems







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