x.v.color

Geoff Holland · March 8th, 2012, 03:38 PM

I did a search on the forum, and there are plenty of topics, but most are quite old and not specific to the Vixias.

Do any of you use it? I'd like to try it but am not sure if our TV supports it. What is the worst that could happen if you record with the option "on" and playback on a screen that doesn't have it?

If you use it, are you happy with the results?

Thanks.

Don Palomaki · March 9th, 2012, 06:32 AM

I've not tried it.
Some interesting info at: xvYCC - Wikipedia, the free encyclopedia
If DVD and BD do not support it current value may be limited.

Geoff Holland · March 14th, 2012, 03:35 PM

Thanks for the link Don, interesting article (so far as articles about colour gamuts can be!).

I've switched it off... :-)

Ray Turcotte · March 28th, 2012, 02:27 AM

Sony published this technical paper: Sony Global - Technology - xvYCC.

X.v.color has been around since 2005, and started showing up in consumer goods around then.

For me, it begs the question why digital video production is still based on the 709 spec..

That would be an interesting technical discussion to have on this board. I too have wondered about using x v color, and have not found any workflow that can use it.

Don Palomaki · March 28th, 2012, 07:18 AM

Quote:

...why digital video production is still based on the 709 spec.....

ITU-R Rcommendation B.T. 709 is the official specification for HD video and dates to 1990.
ITU-R 601 is the official spec for DV encoding of SD video, and dates to 1982.

It is used for video production because it is the world-wide standard to ensure compatability.

Eric Olson · April 8th, 2012, 07:04 PM

Quote:

Originally Posted by Ray Turcotte

That would be an interesting technical discussion to have on this board. I too have wondered about using x v color, and have not found any workflow that can use it.

Although the 709 transfer function specifies 16 as black and 241 as white. The 8-bit video rendering path in Sony Vegas processes the full 0 to 254. As a result super blacks and super whites are automatically available when color grading. Note, however, that Adobe Premier may delete the x.v.color information. I'm not sure about other NLEs.

[Première] Let's featurerequest/bugreport about superwhite and chromaproblems

There is no harm recording x.v.color mode, because in the worst case, the extra dynamic range is simply ignored.

Jason Garrett · May 2nd, 2013, 08:53 AM

Ok, I’ve been recently more and more paying attention to bit depth and turned this on in my HF S20 last weekend to see what came of it. As noted, despite some misinformation originally that deterred me from using it – stating it couldn’t be displayed, etc. My thoughts were; what could it hurt to have the added headroom?

This now raises a whole new question for me that might best be answered on this forum. I’m seeing that this is actually available in AVCHD – if not other formats. So, if my home player plays ‘AVCHD’ specifically (Panny DMP-BDT220 and Panny ST50 display) – am I missing out to not be trying to encode to AVCHD (not even sure how to do that yet honestly if possible) and keep my video in that format at least for home viewing if not to a standard that others might be able to play?

Is this the ‘deep color’ option that I see referenced and how to achieve it? Blu-ray compliant discs aren’t going to actually play ‘deep color’ – correct?

March 8th, 2012, 03:38 PM	#1
Geoff Holland Regular Crew Join Date: Aug 2005 Location: Montreal, QC Posts: 60	x.v.color - do you use it? I did a search on the forum, and there are plenty of topics, but most are quite old and not specific to the Vixias. Do any of you use it? I'd like to try it but am not sure if our TV supports it. What is the worst that could happen if you record with the option "on" and playback on a screen that doesn't have it? If you use it, are you happy with the results? Thanks.

March 9th, 2012, 06:32 AM	#2
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	Re: x.v.color - do you use it? I've not tried it. Some interesting info at: xvYCC - Wikipedia, the free encyclopedia If DVD and BD do not support it current value may be limited. __________________ dpalomaki@dspalomaki.com

March 14th, 2012, 03:35 PM	#3
Geoff Holland Regular Crew Join Date: Aug 2005 Location: Montreal, QC Posts: 60	Re: x.v.color - do you use it? Thanks for the link Don, interesting article (so far as articles about colour gamuts can be!). I've switched it off... :-)

March 28th, 2012, 02:27 AM	#4
Ray Turcotte Regular Crew Join Date: Nov 2011 Location: Ottawa, Ontario Posts: 63	Re: x.v.color - do you use it? Sony published this technical paper: Sony Global - Technology - xvYCC. X.v.color has been around since 2005, and started showing up in consumer goods around then. For me, it begs the question why digital video production is still based on the 709 spec.. That would be an interesting technical discussion to have on this board. I too have wondered about using x v color, and have not found any workflow that can use it.

May 2nd, 2013, 08:53 AM	#7
Jason Garrett Regular Crew Join Date: Oct 2011 Location: Oklahoma City, OK Posts: 117	Re: x.v.color - do you use it? Ok, I’ve been recently more and more paying attention to bit depth and turned this on in my HF S20 last weekend to see what came of it. As noted, despite some misinformation originally that deterred me from using it – stating it couldn’t be displayed, etc. My thoughts were; what could it hurt to have the added headroom? This now raises a whole new question for me that might best be answered on this forum. I’m seeing that this is actually available in AVCHD – if not other formats. So, if my home player plays ‘AVCHD’ specifically (Panny DMP-BDT220 and Panny ST50 display) – am I missing out to not be trying to encode to AVCHD (not even sure how to do that yet honestly if possible) and keep my video in that format at least for home viewing if not to a standard that others might be able to play? Is this the ‘deep color’ option that I see referenced and how to achieve it? Blu-ray compliant discs aren’t going to actually play ‘deep color’ – correct?