|
Post by gismo31 on May 30, 2014 7:58:37 GMT -5
Hi, i'm a happy owner of a umc200 updated with the latest firmware.
However, i'v a big problem with 1080p50 and 1080p60 video signal : when i use 12 bit deep color : the sound is stuttering , disconnects and resyncs. the video falls out some times but less frequently than the sound. i've tried several sources, an umc200 of a friend and also differents displays., hdmi cables etc.... direct connection to the display solves the problem
each time everything works fine in 8 bits but not in 10 or 12 bit. please note 1080p24 12 bit is ok....
please help me....
|
|
|
Post by Andrew Robinson on May 30, 2014 8:50:52 GMT -5
Dear sir,
If you're the gentleman living in Europe, using Dune players, I believe your question(s) have been answered. If you're not this same gentleman I apologize, and will attempt to answer your question the best I can. First and foremost, deep color is to actual color what upscaling to 4K is to actual or native resolution. In other words its a gimmick. Allow me to explain. All current HD content uses 8-bit color, no ifs, ands, or buts about it. It's 8-bit because that is the standard. Now, your display(s) may be 10/12-bit, and your source component (again, guessing the Dune) may have a 10/12-bit or deep color option, but all its doing is taking 8-bit information and attempting to extrapolate a 10/12-bit look so to speak. Some people like this, some people don't. I personally think its an utter waste of time and money, but then again, I also think upsampling pixels is silly -to each their own I guess.
As for the UMC-200, if you're using a Dune player, you running into two different items that is causing your UMC-200 to "freak out." First, and this is a biggie, Dune players are NOT HDMI certified devices. Yes they have HDMI connections, and yes you can playback HD content via their HDMI outputs, but they have not passed the certification process to technically claim full HDMI compliance. In other words, all bets are off with regards to their HDMI compatibility with a sanctioned/licensed HDMI capable device like the UMC-200. I say this with all due respect because I too am a Dune owner. I love their players and use them throughout my house, and like you, I had difficulties getting them to work when I switched to the UMC-200 processor. Because the UMC-200 does NOT HAVE A VIDEO PROCESSOR internally, you have to be very specific on what signal you feed it -especially when it arrives via a non certified device. The Dune's Auto EDID setting doesn't work with the UMC-200, meaning you have to tell it (the Dune) to output exactly what the source material is encoded in. If you do not do this, you're going to get purple screens, drops, and whatever else. This is not the UMC-200's fault.
The reason your displays don't have this trouble is because they likely have some form of video processing internal, so they have a "buffer" if you will that allows them (the displays) to put all the jumbled pieces of the incoming signal from your Dune back together again. You say you're able to enjoy your favorite films when viewing them in their native format, 1080p/24 (or 23.997) in 8-bit color etc. I would urge you to simply enjoy, for that's what the filmmakers' intended for you to see. You should even be able to enjoy content at 1080p/ 50 and 60 in 8-bit as well, so long as the source material is encoded as such. But when you ask the UMC-200 to make sense of some form of upsampling etc. you're going to get nothing but issues. Again, this is NOT a fault with the UMC-200. Hope this helps.
|
|
bootman
Emo VIPs
Typing useless posts on internet forums....
Posts: 9,358
|
Post by bootman on May 30, 2014 8:57:28 GMT -5
Andrew, your post should be a sticky. Any other non certified media players out there that people may be trying to use with a unit like the 200 that you know of? This same advice would apply.
|
|
|
Post by jmilton on May 30, 2014 8:59:08 GMT -5
DVD-Video and Blu-ray Disc standards support video with a bit depth of 8-bits per color YCbCr with 4:2:0 chroma subsampling. Why would you select 12 bit in the first place?
|
|
bootman
Emo VIPs
Typing useless posts on internet forums....
Posts: 9,358
|
Post by bootman on May 30, 2014 10:22:53 GMT -5
DVD-Video and Blu-ray Disc standards support video with a bit depth of 8-bits per color YCbCr with 4:2:0 chroma subsampling. Why would you select 12 bit in the first place? It may be applicable for some original computer generated sourced materials. But you are correct that for all commercially available content it is not.
|
|
|
Post by amt on May 30, 2014 11:48:23 GMT -5
So we expect a UMC-200 to work with a certified HDMI source player which can output 1080p/60 with 12-bit deep color?
|
|
|
Post by Andrew Robinson on May 30, 2014 12:00:52 GMT -5
So we expect a UMC-200 to work with a certified HDMI source player which can output 1080p/60 with 12-bit deep color? I have not tested it personally, but will try and work it out here in a second. Stay tuned...
|
|
|
Post by Andrew Robinson on May 30, 2014 12:11:30 GMT -5
Just tried it with an LG Blu-ray player set to the following: 1080p/ 24(1st) then 60(2nd), YCbCr color (both times) and it worked brilliantly when connected to the UMC-200. Switching to RGB color in either 1080p/24 or 60 also worked. So if you have an HDMI certified device and insist on upsampled color (aka deep color) then you should be good to go when you connect said device to the UMC-200. If you have a source that is not HDMI certified, but still has an HDMI output, and you want to play around with settings that exceed the specifications of the original source material...good luck.
|
|
|
Post by thrillcat on May 30, 2014 13:01:56 GMT -5
Just tried it with an LG Blu-ray player set to the following: 1080p/ 24(1st) then 60(2nd), YCbCr color (both times) and it worked brilliantly when connected to the UMC-200. Switching to RGB color in either 1080p/24 or 60 also worked. So if you have an HDMI certified device and insist on upsampled color (aka deep color) then you should be good to go when you connect said device to the UMC-200. If you have a source that is not HDMI certified, but still has an HDMI output, and you want to play around with settings that exceed the specifications of the original source material...good luck. Also works with a PS3.
|
|
|
Post by amt on May 30, 2014 15:55:34 GMT -5
Good to know, thanks.
I wonder if the Dune player is doing 60.0 Hz instead of the actual standard, 59.94 Hz, which is what most [good] video sources output for 1080p/60
Personally I always use YcbCr 4:2:2, which by default technically is 10 bit, but I guess that's not the point. I take advantage of the 10-bit only for my video processor, so it can correct color, gamma, and grayscale and not introduce banding.
|
|
|
Post by Andrew Robinson on May 30, 2014 16:44:09 GMT -5
Good to know, thanks. I wonder if the Dune player is doing 60.0 Hz instead of the actual standard, 59.94 Hz, which is what most [good] video sources output for 1080p/60 Personally I always use YcbCr 4:2:2, which by default technically is 10 bit, but I guess that's not the point. I take advantage of the 10-bit only for my video processor, so it can correct color, gamma, and grayscale and not introduce banding. Dune has settings for both 60Hz as well as 59.97Hz -it's actually quite comprehensive in the respect. As for using YcbCr 4:2:2, it's all well and good, but the signal you're sending it -presumably Blu-ray -is 8-bit, 4:2:0 using copious amounts of compression. 4K will likely improve upon this in a big way, but for now, YcbCr is largely a gimmick.
|
|
bootman
Emo VIPs
Typing useless posts on internet forums....
Posts: 9,358
|
Post by bootman on May 30, 2014 17:20:54 GMT -5
So this title should read deep color bug with DUNE.
|
|
|
Post by Topend on May 30, 2014 17:25:07 GMT -5
I have deep colour switched off. If there is no benefit then why use it?
Dave.
|
|
|
Post by amt on May 30, 2014 21:04:46 GMT -5
I realize the source is 4:2:0 8 bit, even if the 4:2:2 allows for 10-bit. I only want 10-bit for the video processor, which absolutely needs more bit depth than the input/source in order to alter the source and not introduce banding. This is purely an integer math issue.
|
|
|
Post by cwt on May 31, 2014 7:16:35 GMT -5
|
|
|
Post by stoopalini on May 31, 2014 7:50:47 GMT -5
Just tried it with an LG Blu-ray player set to the following: 1080p/ 24(1st) then 60(2nd), YCbCr color (both times) and it worked brilliantly when connected to the UMC-200. Switching to RGB color in either 1080p/24 or 60 also worked. So if you have an HDMI certified device and insist on upsampled color (aka deep color) then you should be good to go when you connect said device to the UMC-200. If you have a source that is not HDMI certified, but still has an HDMI output, and you want to play around with settings that exceed the specifications of the original source material...good luck. Also works with a PS3. When the "Deep Color" option is enabled on my PS3, it causes video and audio dropouts when connected through my UMC-200. I just turned it off in the settings and it's been fine since. So I don't think it's safe to say all HDMI certified devices will work with up sampled deep color through a UMC-200.
|
|
|
Post by gismo31 on May 31, 2014 9:57:14 GMT -5
thanks fot the explanation. I'm indeed the person from france who has the problems. i wanted to know if the community encounters the same bug ... I tried today with my PIONEER LX55 and the star wars épisode III movie : I do have the same problems. ( and i guess pioneer's lx55 is HDMI compliant : www.pioneer.eu/fr/products/archive/BDP-LX55/page.html it's last years pioneer flagship ). sound drop outs appear randomly a few times each 5 minutes. this does not appear with 1080p60 8 bit signals nor 1080p24 12 bit but appears with deep color and 1080p50 and 60 signals. one again, i've tried my JVX X3 and samsung LED TV, several hdmi cables : same problems...
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 31, 2014 16:24:42 GMT -5
Did someone say Dune?
|
|
|
Post by bitzerjdb on May 31, 2014 20:07:47 GMT -5
I had the same experience with a Oppo Blueray player. With Deep Color on, video and audio dropouts made watching a movie impossible. Turned off, everything works fine..... When the "Deep Color" option is enabled on my PS3, it causes video and audio dropouts when connected through my UMC-200. I just turned it off in the settings and it's been fine since. So I don't think it's safe to say all HDMI certified devices will work with up sampled deep color through a UMC-200.
|
|
|
Post by gismo31 on Jun 1, 2014 13:25:14 GMT -5
|
|