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HPX2000 and AVC intra
Looking at buying either HPX3000 or HPX2000 with AVCintra board for broadcast doc/series work.
I have a couple HVX200’s with 4x16GB P2 cards (that I use for corporate), and usually use the HDX900 for my broadcast and higher end corporate… I like shooting in 720pN mode to save storage space in P2, and I’m wondering about shooting in AVCintra 100Mps in 1080pN?
Just wondering if the HPX2000 can shoot 1080pN in AVCIntra? and if so, what the record time is. I notice on Panasonic website it has 1080pN listed on HPX3000, but shows record times to be the same as 1080p over 60i…so is it really native? Also wondering when I bring the footage in on P2 cards how I get them into FCP… do I set up an easy set up to Pro Res 422 codec and then just log and transfer?
Anyone?
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2 Replies
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[morgster] “but shows record times to be the same as 1080p over 60i…so is it really native?”
Yes, it’s really native. But AVC-Intra is a variable-bitrate codec, DVCPRO-HD is not. So on DVCPRO-HD if you eliminate duplicate frames (as in, 720pN mode) you gain back storage space, with no change in overall quality. With AVC-Intra, it’s possible (don’t know this for certain) that they’re recording just the 24 frames, while maintaining the 100mbps bandwidth. If that’s the case, then you’d actually be looking at milder compression and therefore an increase in overall image clarity.
So, it may be that they implemented it the same way as 720/24pN on DVCPRO-HD and that the actual recording bandwidth is 80mbps and they just didn’t update the stats on the website. Or, it’s possible that they use the full bandwidth and you just get less-compressed footage. Not really sure which way they went.
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Hi Barry,
I assume the 2000 implements the codec in the same way as the 3000, in which case the 24PN mode only records the frames used and at the same bit rate per frame, or 80 mbit/s, which allows more recording time on the cards.
ftp://ftp.panasonic.com/pub/Panasonic/Drivers/PBTS/brochures/B_AJ-HPX3000.pdf
ftp://ftp.panasonic.com/pub/Panasonic/Drivers/PBTS/papers/FAQ_AVC-Intra.pdf
ftp://ftp.panasonic.com/pub/Panasonic/Drivers/PBTS/papers/WP_AVC-Intra.pdf
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