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variable speed playback/slo-mo HVX?
With this new HVX cam recording to P2. This could mean that you could essenitally get variable frame rate playback a la varicam? With no tape transport you would think it would be possible to do this from solid state….. I don’t see any reason why a series of frames recorded to P2 couldn’t be then chosen to play back at different frame rates. Surely this is just done with software – the hardware should be fully capable???
Any thoughts?
For example, if you could shoot 720p 60fps and then playback at 24fps then you could get some great slow-mo.
Even if you can’t then it’s something you could do in post production at least. Exciting times!!!
Karl
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19 Replies
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Fps of the camera is not about playback, it’s about recording time of each frame.
Hvx200 could have been a great cranking device, but if the rumors are true that
there will be different version for 60Hz and 50Hz countries, there might not be
so many speeds.
I can’t come up any reasons why the new ccd’s wouldn’t be able to use several
different frame rates. (23.976, 24, 25, 29.97, 30, 50, 59.94, 60, etc.)Shouldn’t it be easy to have any kind of frame rate with solid state recording?
Or does the decade old dvc-codec somehow restrict the development. -
It does seem strange to build a new HD camera around a 10 year codec. I hope that doesn’t hinder it. Has there been any improvements to the DVCPRO codec over the years or maybe none have been needed?
Cheers,
JS -
It would be nice if one camera could give you 25p & 30p, for those of us that work in the States & Europe…
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“Fps of the camera is not about playback, it’s about recording time of each frame.”
Yup you are right, but if you have recorded at 60fps, then there is no reason why you should not be able to play back at 24fps/ 25fps or even 30fps once the data is recorded. The codec may be a limitation, but if Varicam recording DVCPROHD can do it with a fixed tape transport then P2 should have no problem.
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It might be old, but it works, works well. NLEs have very good software versions of it and it looks fine. Because MPEG2 is “adaptive”, that’s the one that needs extra work to make it usable. Remember the first DVD’s – ouch – what a bad picture – my VHS often looked better. Now DVDs generally look great. The codec hasn’t changed, but it’s implementation has. DVCpro/pro50/HD, has looked great from the start.
Graeme
– http://www.nattress.com – Film Effects for FCP
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The NTSC one will do 120p60fps. Im sure youll be able to conform the footage for 24fps slow mo. I already do it with the dvx-100 when i shoot 30p for a 24p sequence. The change is subtle but technically its the same
jesse
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[toke lahti] “Shouldn’t it be easy to have any kind of frame rate with solid state recording?
Or does the decade old dvc-codec somehow restrict the development. “What kind of statement is that? I mean, first of all, the “decade old” codec under discussion here is not even four years old. The first DVCPRO-HD product on the market, the VariCam, was first introduced in 2001. If you want a decade-old codec, you’d have to look to MPEG-2, which was introduced in 1993.
Secondly, the VariCam is the one and only product on the market that specifically DOES support variable frame rate recording at any FPS.
So yes, the answer should be obviously that the codec, and the P2 medium, should be able to encode at any fps. Now it’s up to the CCD and the camera to see if it can scan in at those variable frame rates.
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Barry, dvcproHD-codec is just 4 dvcpro-chips in a same board, just like dvcpro was 2 of those.
So nothing new here in perspect of codecs for a long time.
Can you come up a logical explanation, why this new p2-cam does not throw away repeated
frames to better use of it’s very short recording time? -
Because Jan, the Panasonic rep said that when it 720p24, say, that it doesn’t put the dupe frames to P2, whereas it would put the dupe frames to tape on the Varicam, say, to keep the tape speed constant.
Also, being “old” in a codec sense is advantageous – it has wide support and is proven in the field.
Graeme
– http://www.nattress.com – Film Effects for FCP
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Hi Graeme,
I actually think it was Barry Green that made that suggestion. 😉 I will tell all in due time. 😉
This really is killing me but I like my job so I have to be quiet.
Best,
Jan
Jan M. Crittenden
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems
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