CoreCodec/H.264 Codec "CoreAVC" - Page 260

THX-UltraII · 19th November 2009, 16:42

http://haali.su/mkv/ is down at the moment. Think it beeing updated to Haali Splitter 2.0!

madshi · 19th November 2009, 17:35

@BetaBoy,

will CoreAVC 2.0 (software decoding) fix the artifacts that occur with some Blu-Rays (e.g. Chinese Ghost Story, Chocolate, Der Untergang, just to name a few)? It may be that those Blu-Rays are out of spec, but only CoreAVC shows artifacts with them. And of course it's not nice if I invite guests over to watch movies with me, and then artifacts show up. So in order to make CoreAVC a good choice for me, I'd have to rely on that it doesn't show artifacts even with funny Blu-Rays.

Thanks!

BetaBoy · 19th November 2009, 17:49

If its related to out of spec Motion Vectors, as Dark Shikari already stated we did not increase the threshold and to do so would come at the cost of speed. We did however a few releases back increase the threshold, but only to the point where it started to slow down decoding.

BTW... I have not sen an recent Blu-Ray releases (past few months) that have MV issues. But that maybe due to my limited time to watch every BR release.

sneaker_ger · 19th November 2009, 18:00

Quote:

Originally Posted by BetaBoy

If its related to out of spec Motion Vectors, as Dark Shikari already stated we did not increase the threshold and to do so would come at the cost of speed. We did however a few releases back increase the threshold, but only to the point where it started to slow down decoding.

BTW... I have not sen an recent Blu-Ray releases (past few months) that have MV issues. But that maybe due to my limited time to watch every BR release.

Quote:

Originally Posted by vwpassion

Will 2.0 support out of spec MV's which could sometimes produce glitches?

Quote:

Originally Posted by BetaBoy

All limitations on MV's have been removed in 2.0.

BetaBoy · 19th November 2009, 18:18

Quote:

Originally Posted by sneaker_ger

Please continue... in the follow-up post was where I mentioned that we had not expanded the MV's. Its also not a limitation at all, but should be considered by Mastering Houses when doing the final production encodes. I had already pointed this out to Sony, Paramount and Fox through a third party all of which have since changed how they treat MV's.

sneaker_ger · 19th November 2009, 18:24

I see. Which means that if people are getting artifacts because of out-of-spec MVs with 1.9.5 they'll also get them with 2.0.(?)

Snowknight26 · 19th November 2009, 18:53

Quote:

Originally Posted by BetaBoy

No way, In months of testing we have only a handful of bugs in the 2.0 codebase, in fact we are only aware of one bug in 2.0 ATM.

Out of curiosity, which one is that?

BetaBoy · 19th November 2009, 19:08

I'll hold off on any report of specifics till it is out with hope that it will be fixed by then.

madshi · 19th November 2009, 19:55

Quote:

Originally Posted by BetaBoy

If its related to out of spec Motion Vectors, as Dark Shikari already stated we did not increase the threshold and to do so would come at the cost of speed. We did however a few releases back increase the threshold, but only to the point where it started to slow down decoding.

BTW... I have not sen an recent Blu-Ray releases (past few months) that have MV issues. But that maybe due to my limited time to watch every BR release.

I've seen it in multiple rather recent Blu-Rays (a list of which you'll find in my previous post). I understand your stance on this. But please understand that from an end user point of view it doesn't matter much whose fault the artifacting is. Couldn't you add an option to CoreAVC to properly handle out of spec motion vectors? I wouldn't mind (at all) if that option came at a speed penalty! But I definitely can't live with artifacts.

BetaBoy · 19th November 2009, 20:08

This was discussed about 90 pages back... but technically that would require two separate decoders as it not something that can be set dynamically like that.

Jaja1 · 20th November 2009, 01:36

I totally agree with Madshi's remarks on handling out-of-spec MV's. They are more common than you think. I have quite a few BRD's suffering from this. ATM I have to rely on ffdshow to playback the affected BRD's without artefacts, but I would prefer to use CoreAVC as my default decoder. So I hope you can come up with a solution Betaboy

hakujin · 20th November 2009, 05:04

Fix on "--weightp 2" corrupted frames problem planned for soft decoding?

More info:

http://x264-bb.com/helpdesk/4333-cor...4-encoder.html

BetaBoy · 20th November 2009, 05:59

hakujin... pls read the last few pages of this thread. Thx.

THX-UltraII · 20th November 2009, 07:22

it s friday, the last day of the week so Haali time!

Snowknight26 · 20th November 2009, 08:04

A week includes the weekend...

leeperry · 20th November 2009, 17:17

Quote:

Originally Posted by THX-UltraII

it s friday, the last day of the week so Haali time!

or else?

Shinigami-Sama · 20th November 2009, 17:28

Quote:

Originally Posted by THX-UltraII

it s friday, the last day of the week so Haali time!

theres still two days left...

BetaBoy · 20th November 2009, 17:39

It's ready when it's ready... weekend or not. Just pinged Haali now for any new changes to the splitter.

Jeff Flowerday · 20th November 2009, 18:45

Quote:

Originally Posted by THX-UltraII

http://haali.su/mkv/ is down at the moment. Think it beeing updated to Haali Splitter 2.0!

Site is back. But nothing new...

THX-UltraII · 20th November 2009, 19:02

yeah, saw this too

19th November 2009, 17:49	#5183 \| Link
BetaBoy CoreCodec Founder Join Date: Oct 2001 Location: San Francisco Posts: 1,421	If its related to out of spec Motion Vectors, as Dark Shikari already stated we did not increase the threshold and to do so would come at the cost of speed. We did however a few releases back increase the threshold, but only to the point where it started to slow down decoding. BTW... I have not sen an recent Blu-Ray releases (past few months) that have MV issues. But that maybe due to my limited time to watch every BR release. __________________ Dan "BetaBoy" Marlin Ubiquitous Multimedia Technologies and Developer Tools http://corecodec.com Last edited by BetaBoy; 19th November 2009 at 17:52.

19th November 2009, 19:08	#5188 \| Link
BetaBoy CoreCodec Founder Join Date: Oct 2001 Location: San Francisco Posts: 1,421	I'll hold off on any report of specifics till it is out with hope that it will be fixed by then. __________________ Dan "BetaBoy" Marlin Ubiquitous Multimedia Technologies and Developer Tools http://corecodec.com

19th November 2009, 20:08	#5190 \| Link
BetaBoy CoreCodec Founder Join Date: Oct 2001 Location: San Francisco Posts: 1,421	This was discussed about 90 pages back... but technically that would require two separate decoders as it not something that can be set dynamically like that. __________________ Dan "BetaBoy" Marlin Ubiquitous Multimedia Technologies and Developer Tools http://corecodec.com

20th November 2009, 05:59	#5193 \| Link
BetaBoy CoreCodec Founder Join Date: Oct 2001 Location: San Francisco Posts: 1,421	hakujin... pls read the last few pages of this thread. Thx. __________________ Dan "BetaBoy" Marlin Ubiquitous Multimedia Technologies and Developer Tools http://corecodec.com

20th November 2009, 17:39	#5198 \| Link
BetaBoy CoreCodec Founder Join Date: Oct 2001 Location: San Francisco Posts: 1,421	It's ready when it's ready... weekend or not. Just pinged Haali now for any new changes to the splitter. __________________ Dan "BetaBoy" Marlin Ubiquitous Multimedia Technologies and Developer Tools http://corecodec.com

19th November 2009, 16:42	#5181 \| Link
THX-UltraII Registered User Join Date: Aug 2008 Location: the Netherlands Posts: 851	http://haali.su/mkv/ is down at the moment. Think it beeing updated to Haali Splitter 2.0!

19th November 2009, 17:35	#5182 \| Link
madshi Registered Developer Join Date: Sep 2006 Posts: 9,140	@BetaBoy, will CoreAVC 2.0 (software decoding) fix the artifacts that occur with some Blu-Rays (e.g. Chinese Ghost Story, Chocolate, Der Untergang, just to name a few)? It may be that those Blu-Rays are out of spec, but only CoreAVC shows artifacts with them. And of course it's not nice if I invite guests over to watch movies with me, and then artifacts show up. So in order to make CoreAVC a good choice for me, I'd have to rely on that it doesn't show artifacts even with funny Blu-Rays. Thanks!

19th November 2009, 18:24	#5186 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,565	I see. Which means that if people are getting artifacts because of out-of-spec MVs with 1.9.5 they'll also get them with 2.0.(?)

20th November 2009, 01:36	#5191 \| Link
Jaja1 Registered User Join Date: Aug 2007 Posts: 59	I totally agree with Madshi's remarks on handling out-of-spec MV's. They are more common than you think. I have quite a few BRD's suffering from this. ATM I have to rely on ffdshow to playback the affected BRD's without artefacts, but I would prefer to use CoreAVC as my default decoder. So I hope you can come up with a solution Betaboy

20th November 2009, 05:04	#5192 \| Link
hakujin Registered User Join Date: Sep 2005 Posts: 19	Fix on "--weightp 2" corrupted frames problem planned for soft decoding? More info: http://x264-bb.com/helpdesk/4333-cor...4-encoder.html

20th November 2009, 07:22	#5194 \| Link
THX-UltraII Registered User Join Date: Aug 2008 Location: the Netherlands Posts: 851	it s friday, the last day of the week so Haali time!

20th November 2009, 08:04	#5195 \| Link
Snowknight26 Registered User Join Date: Aug 2007 Posts: 1,430	A week includes the weekend...

20th November 2009, 19:02	#5200 \| Link
THX-UltraII Registered User Join Date: Aug 2008 Location: the Netherlands Posts: 851	yeah, saw this too