January 30th, 2014, 10:07 PM | #256 |
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Re: Sony FDR-AX100
Why would you want to render to XAVC-S ? Sony have been giving away a voucher for Vegas with the latest high end camcorders so maybe one will be with the FDR-AX100.
Ron Evans |
January 31st, 2014, 12:35 AM | #257 |
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Re: Sony FDR-AX100
Question for Ron Evans.
As I do similar events to you Ron, and all of our events are currently mastered to SD DVD (PAL), do you feel the your 4K camera gives noticeable difference in detail when it finally gets back to SD? Currently we use Panasonic AG -AC130/160 series which are a much cleaner picture then we've ever had before. I too use Edius for all editing. Any difference in facial features when you have 30 odd kids on a dark stage would be worth $2000! Thanks, Vaughan |
January 31st, 2014, 06:05 AM | #258 | |
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Re: Sony FDR-AX100
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However, down the road when I have a 4K TV, I'd want to avoid generational losses for my personal footage as much as possible while maintaining 4K from start to finish. By avoiding a codec change in the editing process, and keeping things XAVC-S from start to finish, I'd think that would be my best shot. |
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January 31st, 2014, 08:32 AM | #259 |
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Re: Sony FDR-AX100
Once you have edited the file the NLE will regenerate so whether its the same or other codec is questionable. It will depend on the playback system then as to what codec is appropriate. The PC encode of XAVC-S will depend on the PC version of the codec and unlikely to be the same as the source which is hardware accelerated with a custom circuit. It will be different and could be better or worse !!!
Ron Evans |
January 31st, 2014, 09:42 AM | #260 |
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Re: Sony FDR-AX100
Ron, I agree, it's a crapshoot. It's a new codec and as with all new codecs it will necessitate some experimentation to see what works best.
To be honest, we're not even sure what will play back the 4K project on a 4K TV just as we're not sure what will play back the output from the Sony AX100. We know for sure the AX100 will play back its output on a Sony 4K UHTV, but beyond that who knows? It's always fun being on the cutting edge...sometimes not so much. ;) |
January 31st, 2014, 11:38 AM | #261 |
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Re: Sony FDR-AX100
I think the FDR-AX100 has HDMI 2.0 so should playback 3840x2160 to any TV with this capability. We shall see !!
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January 31st, 2014, 01:35 PM | #262 | |
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Re: Sony FDR-AX100
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I'd expect the same to happen with XAVC-S. |
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January 31st, 2014, 01:47 PM | #263 | |
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Re: Sony FDR-AX100
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Ron Evans |
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February 4th, 2014, 01:00 PM | #264 | |
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Re: Sony FDR-AX100
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Yes, new lens, but for 4K it is not easy to make on wide angle "sharp cornes". I tried the small JVC 4K camera last year and the lens was the most interesting part - slow and not wide. I was also very happy two years ago that new HD cameras have better LCD and EVF, but for focusing 4K we are back in that old problem - LCD has 1280x720pix for 4K focus. Also my HW is very happy now, small hardiscs without power adapters work well with my notebook (i7), but 4K needs upgrade or proxy. I think that I can still wait one or two years then 4K start something for me. But new cameras are always so nice, I like them .-) . |
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February 5th, 2014, 06:39 AM | #265 |
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Re: Sony FDR-AX100
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February 11th, 2014, 01:54 PM | #266 | |
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Re: Sony FDR-AX100
Hi
Quote:
The next one up, level 4.2 means a decoder must support up to 60fps at 1080P, and so AVCHD Progressive requires a decoder that handles Level 4.2, this is why support for 60fps at 1080P is much more limited in hardware decoders as hardware decoders typically only needed to go as high as level 4.1 before its arrival. Some people may quote Level 5.2 for the AX100 but this only relates to Sony's branding of H264 as XAVC which can go all the way up to 60fps at 4K. In the AX100 then 4K is level 5.1 (which is all that is needed to support their 30fps at 4K), and HD is Level 4.2 still. If you take the Panasonic GH4 which has the option to record at 200Mbits/sec All-Intra makes HD on the GH4 Level 5 (only Level 5 decoders are guaranteed to cover that bit-rate), but it is still Level 5.1 for 4K HD. So to decode the GH4 200Mbits/sec All-Intra 1080P we would need a hardware or software decoder that supports Level 5, but for the Sony AX100 HD Level 4.2 will do. Of course at the moment there are no hardware decoders that will decode Level 5 or Level 5.1 available to the consumer. 4K HD TVs presumably have a level 5.2 H264 hardware decoder built in if they support playback from media. If the spec for an expensive UHD TV only says Level 5.1 for H264, we know it is limited to only playing back 30fps @ 4K, so has built in obsolescence. There are other things called profiles, which typically cover things like colour sampling and further define maximum bit-rates. Profiles can be thought of as further refinement that allows hardware to target consumers, enthusiasts or professional applications within that Level. Hope that helps explain it, more info on the Wiki H.264/MPEG-4 AVC - Wikipedia, the free encyclopedia Regards Phil |
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February 11th, 2014, 02:23 PM | #267 |
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Re: Sony FDR-AX100
Phil, the new 2014 Sony UHD TVs clearly state they support 4K@60p. To me that's more reassuring than worrying about what 'level' they do or don't support. Clearly stating 4K@60p removes any and all doubt. :)
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February 11th, 2014, 03:58 PM | #268 |
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Re: Sony FDR-AX100
No it creates doubt. What is the maximum bit rate? Can it decode 4.2.2, does it support 10bit? Only publishing the level and profile removes doubt.
I'd be surprised if it isn't level 5.2 however. |
February 11th, 2014, 04:02 PM | #269 |
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Re: Sony FDR-AX100
No way for me...
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February 11th, 2014, 04:08 PM | #270 |
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Re: Sony FDR-AX100
Hi
Just to add I'm not sure if all or if any Sony 4K TVs support HDMI 2? So you will be limited to 4K at only 30fps from any external sources, not exactly future proofed unless they are firmware updateable to HDMI 2.0. Buyer beware. Edit, just downloaded the i-manual for XBR900 Sony 4K TV and under supported codec list it only goes up to Level 4.2, in other words it is saying no support for 4K media files at all, seems odd. Regards Phil |
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