totally gay...

what's next?The best part below shoulder?

Hmnn those using media players also gay now..so must switch to BD player now kah..To avoid been gay?

fuyoh become gay thread?

realtek is for gay
sigma is for macho

lol this my post..................

source info quite old . Realtek 1073 software getting better ~ SDK V1.. now V3 already

Guys,

Don't have times to do a complete write up so I will summarize the results u can see in the attachment. As promised, I checked from a processing point of view if there are any alterations when the media player is sent test patterns in terms of calibration.

The reference files are as they are named and a reference. They were from a PS3 using AVSHD709 test patterns (meter :EyeOne Pro)

The Sigma (8655 chipset) files are results obtained thru a media player that uses the Sigma chipset also using the AVSHD709 test patterns.

Greyscale:
No major differences. The brightness and contrast are essentially unchanged. The sharpness is neutral no additional sharpening added by the processor.
Good results

Gamut (Flagged)
On flagged HD content, there are no differences. Good results.

Gamut (Unflagged)
On any HD content that is not flagged as HD, major problems. All colours, hue, saturation and luminance are clearly out. This is a problem only if the media u are playing is unflagged. So if u suddenly run a video, that has very bright greens, cyans and the reds look weird, it means the content was unflagged and the chipset used the wrong colourspace to do the conversion. HD shd be decoded in Rec709 but the Sigma chipset seems to use Rec601 and still mess up the stuff.

Moral of the story:
If u r using a Sigma chipset media player, u're in good shape if ur content is flagged correctly. Else there might be some problems. The plus is that if it is correctly flagged, it is not altering the picture in any way that is bad. This has been a problem even with older Sigma chipset, they just never fixed it.

I will write more when I have the time and if there are questions.

If someone loans me a Realtek chipset media player I will do the same.

This post has been edited by anfieldude: Jan 25 2010, 09:46 AM


Attached File(s)
 ReferenceGreyscale.pdf ( 120.52k ) Number of downloads: 78
 SigmaGreyscale.pdf ( 118.49k ) Number of downloads: 57
 ReferenceGamut.pdf ( 119.23k ) Number of downloads: 32
 SigmaGamutFlagged.pdf ( 117.66k ) Number of downloads: 32
 SigmaGamutUnflagged.pdf ( 126.21k ) Number of downloads: 46

Bro Anfield, mind tell us which media player for that Sigma?

Sigma 8655 WDTV Live.

However, the same results can be obtained using any Sigma chipset, old or new. I tested the older ones before. Same results.

HD flagging is important else u will have colour decoding errors.

However, when flagged correctly the Sigma does everything else very well.

Bro Anfield, wait for the elites to get their BD1...then can test again with newer-gen Sigma chipset.

More than willing to do this, if someone is willing to send me the different chipsets for checking.

How long for you to do that checking??

MAybe I can help you on the devices....Xtreamer and HDX BD-1.

It takes me only a couple of hours to do the testing on each media player.

So one day turnaround time if we arrange correctly shd be no problem. Of course, keep in mind that I am in Penang.

if good results get if free or not? Hahaha

If only everyone was as generous as u....

Anfiel...

HD Flagged
IIRC u did mention quite long time ago that SMP8635 WDTV do messed up the color space even when the content was HD flagged... n not on the SMP8635 DVico..

or was the prob corrected by the later firmware...

The older sigma chips were the same, unflagged, colour space errors, flagged - perfect.

icic ... thanks..