Official OPPO BDP-83 Owner's Thread [technical talk only] - Page 706

I was going to suggest checking the same thing. I was fooling around with color space settings a couple of weeks ago and got something like that. Make sure that both your TV and the 83 have compatible color space settings.

I have compared the performance of the different color spaces available in HDMI using the Spears and Munsil Zone Plate and Multiburst tests : RGB video levels, YCbCr 4:2:2 and YCbCr 4:4:4.
The Oppo BDP-83, firmware 905, is connected in an Eizo HD2442W monitor through HDMI (1)

The differences are small. I don't know if this could have any visible effect in a movie. So it's mostly an academic exercise.

YCbCr 4:2:2 performs best, followed by RGB, followed by YCbCr 4:4:4, which darkens the most the edges of the pattern.

I've taken some pictures of the screen (2). The pictures are intentionnally blurred from the lens in order to avoid extra moire and bandwidth issues in the camera.










On the left, the chroma zone plate test. On the right, the luma zone plate test, for reference.

The multiburst test gives more information :










The fact that the last square of both sequences of Multiburst luma tests are brighter than the others can be explained by the fact that they are the only patches that feature only black and white levels. All other patches have grey pixels in order to make the transition from white to black. These grey pixels must have been interpolated from black and white with a lineal scale intead of a 2.2 gamma scale. That's why they are too dark. That's a problem with the test conception.

We can see that the horizontal chroma multiburst test is darkened, but not the vertical one, in YCbCr 4:2:2 color space.
In YCbCr 4:4:4, they are both darkened.
In RGB, they are both moderately darkened.

In RGB and YCbCr 4:4:4, the Oppo performs the chroma interpolation. But in YCbCr 4:2:2, the Oppo only performs vertical choma interpolation (result visible on the horizontal pattern), while the Eizo monitor performs the horizontal interpolation (visible on the vertical pattern).

Thus we can say that the Oppo darkens the high frequency chroma pattern while interpolating, while the Eizo doesn't.

Since darkening is a matter of bandwidth, we should expect more moire and un-smooth edges in YCbCr 4:2:2, because there is a trade-off between aliasing and bandwidth. The deal is with horizontal bandwidth, therefore the left and right side of the zone plate chroma test should look bad.

Here are close-ups of the left bottom side of the pattern, in YCbCr 4:4:4, YCbCr 4:2:2, and RGB respectively (expand the pictures to see the full resolution) :

http://3141592.pio2001.online.fr/pic...cs_zpz_444.jpg
http://3141592.pio2001.online.fr/pic...cs_zpz_422.jpg
http://3141592.pio2001.online.fr/pic...cs_zpz_rgb.jpg

On the top left corner, moire seems to be the same. And I fail to see a difference in smoothness on the right hand side.

Therefore it seems that the chroma interpolation could be improved in the Oppo, and that meanwhile, YCbCr 4:2:2 is the best setting for this screen.

Note that no setting presented any problem big enough for the test to be considered as "failed", as shown in the Spears and Munsil BD manual.
So, as I said in the beginning, this seems to be a very minor problem, and it is unlikely that any movie could present a visible difference.


(1)Primary output = HDMI
TV aspect ratio : 16/9 wide/auto (the Eizo maps the 1080 signal pixel-wise, overscan test OK, black bars on top and bottom because it's a 16/10 1920x1200 monitor).
TV system = multisystem
Output resolution = 1080p
1080p24 output = auto
Deinterlacing mode = auto (same result with 2:2 odd and film bias for YCbCr 4:4:4)
CUE correction = auto (same result with off for YCbCr 4:4:4)
HDMI deep color = off

(2)Taken with a 90mm fixed focal lens in order to avoid edge derkening in the lens, or vision angles too wide from the panel, fixed manual exposure and ISO (different for the overall pictures and for the three macro zooms), bright regulator Off for the HDMI input on the Eizo.

@ Pio2001 -

Very cool.
Thanks.

Mike

Good stuff! Thanks for that. Folks reading this should understand that tests like this are pretty specific to the particular display. Even when they point to things that Oppo might improve, the question of whether you would see a difference on YOUR display is still open.
--Bob

Can someone provide a summary of the significant features of the new firmware? My unit is about three months old, and it has BDP83-22-0430 firmware. - I'm not clear about the improvements/advantages provided by the new firmware. If the audio would be improved in some way, I would be interested.

I don't have major problems, but I do notice that the audio occasionally seems to drop out for very brief periods (half a second?). Also, can someone explain what the "popcorn" problem? I'm assuming this is some form of popping noise, and that hasn't been a major issue with my unit.

(Incidentally, the '0430 firmware version is what Oppo designates "the Main Version." There's apparently also a "Loader" version, a "Sub-version," and a Chip version. I'm assuming the "Main Version" is what's being changed??

Thanks. I tried searching, but this thread is getting pretty long.

Jim Cate

Pio2001,
I'd be curious whether you see any change if you switch from HDMI Deep Color OFF to HDMI Deep Color Off (Dithered)?
--Bob

There should be release notes on OPPO's support page. Also check the first post in this thread.

-Bill

Go to Oppo's BDP-83 Support page here:

http://www.oppodigital.com/blu-ray-b...3-Support.aspx

Click on the installation instructions link for the "official" 0620 firmware and you will see the release notes for changes since the 0430 firmware you have now.

Then click on the installation instructions link for the "public beta" 0905 firmware and you will see the release notes for the additional changes in that version.

Personally, I recommend that you install the 0905 "public beta" version. Three pieces of firmware will be updated: Main, MCU, and BD-Loader. The new version numbers for each portion are listed on that Support page as well.

At the very least, you should upgrade to the "official" 0620 release.
--Bob

Not my experience. I am pure HDMI, and "they" seem to be gone. When I say "they", there were never Rice Krispies. Just occasional soft "pfft's" that are no longer there with 0905.

FW 905 is too unstable for me. Can someone tell me how I can get the 805 FW. I didn't save it on my hard drive. My tray refused to close (many times) unless unplug power.

http://download.oppodigital.com/BDP8...83-36-0805.zip

The first post in this thread has links to OPPO's recent firmware pages.

-Bill

Thanks Bill

Tell Oppo tech support about that. It may indicate a problem in your optical drive or they may be able to correct it in firmware.
--Bob

I agree with SoM's statement about the "happy marriage" of my Denon 2809 and the Oppo. From first receiving it to now, I have not experienced any of the 'standard' problems that some are having. As stated, there is no FW update for these AVRs. SteveC uses a 2807, and there could be something that was refreshed with later year models. His "rice krispies" are now gone, and is satisfied with the new firmware and his equipment that is linked solely by HDMI.

Per an earlier request to learn which Denon products are being used with the Oppo player:
I use my Oppo Blu-ray player with a Denon AVP-A1HDCI processor and the latest Oppo beta update. Performance has been outstanding with SACD, Blu-ray and DVD material.

I am using a Denon 4308CI with HDMI and no problems. Using latest beta update also.

So far I don't seem to have any problems with the 0905 Firmware. I do have a question, I am hooked up to my Yamaha 863 via HDMI but I also have hooked up the analog out of the Oppo to the multichannel input of the Yamaha. The analog outs don't work, if I am playing a SACD or CD they are still going through HDMI. If I unplug the HDMI cable I have no sound. What do I need to switch? I am probably missing something really stupid.

Thanks John

My Denon 2808 and Oppo BDP-83 play nice all the time. But my Motorola 3416 from Comcast's relationship with my receiver is a different story.

A good topic for the V863 thread in the AVR forum. You have to select the multi-channel input on the AVR to hear that, it's not linked to the HDMI input.

This is true. I am running 7.2 using a Emotiva XPA-5 amp. When I switch to multichannel only the two rears that are not hooked to the amp have sound. How do I get around this?

John

If you are using triggers to turn on the amp, make sure the trigger is active when you select the multi-channel audio.
--Bob

This issue has now been reported by 2 members, both of which claim to have spoken with Oppo CS who confirmed that there is loss of LFE for 2ch. I have since confirmed as well with speaker tests. I seem to recall Oppo quoted as saying that this was not a problem with early firmwares, only the last few.

Hope they get this fixed soon!

No difference.

I can see the difference on the "contrast" chart, if I set the contrast setting of the Oppo on -1.
With deep color off, the grey shades have evenly spaced steps, barely visible, caused by the contrast reduction. They disappear with dithering.

By the way, dithering is the only way to get them disappear with my screen. If I switch to deep color 30 or 36 bits, the steps are still visible.
It means that either the Oppo doesn't take advantage of deep color, performing the process in 24 bits, then sending additional null bits into the HDMI output, or, more probably, the Eizo screen cuts off the extra bits while receiving the deep color data (which is a shame since the screen internal processes are themselves deep color).

Thanks for the additional info. I've seen what the Oppo outputs for 30 and 36 bits. It is definitely putting real data in the low order bits.

Now your YCbCr 4:2:2 input with Deep Color off should be 12 bits per component (24 bits per pixel -- with only 2 of the 3 components transmitted each pixel time). So if your display is truncating input back to 8 bits per component you would expect to be able to see it there too.

Keep in mind that the video processing path is different in the Oppo for Source Direct than for any explicit output resolution. The type of checking you are doing should be done with an explicit output resolution so that the VRS chip is doing all the heavy lifting.
--Bob

Thanks.
Just curious.
Would that show up in pictures, or too subtle to photograph?

Mike

Thank you! This is the first report I have ever heard of deep color processing being visible on a test pattern. With any player or display, although I haven't been scouring threads for other players exhaustively.

-Bill

Yes, this seems to have snuck up on us somewhere along the line. I was incorrect.

Ok, I sent email to Oppo.

I'm getting no sound from the Oppo connected to a Rotel 1069 via HDMI.
The picture is fine. However, I get no audio. I have LPCM selected in the setup menu for HDMI Audio options. The Secondary Audio is turned off. The output resolution is set at 1080p (Pioneer 141FD).

The Rotel is selected to accept HDMI audio.

What makes this even stranger is the fact that I had an Oppo Blu-ray on loan earlier the week and it worked fine. I have a PS3 connected via another input and it works fine with PCM.

Please, anybody out there that can help?

Perhaps you hit the Mute button on the Oppo remote by mistake.

Find the volume +/- buttons near the top of the remote and press + until it shows 100%. Find the Mute button next to those and make sure you haven't muted the audio output from the Oppo.

Try playing something simple for audio such as a CD (which will come across the HDMI as stereo, 44.1KHz, LPCM).

Are your connections HDMI to HDMI? You can't pass audio to a DVI input.

In Setup > Video Setup confirm that Primary Output = HDMI.
--Bob