AVS › AVS Forum › Video Components › Home Theater Computers › Since when is 1920x1080 a relative term? (LCD/ATI/nVidia issue)
New Posts  All Forums:Forum Nav:

Since when is 1920x1080 a relative term? (LCD/ATI/nVidia issue) - Page 2

post #31 of 47
12/23/09 at 10:13pm
Thread Starter 
Quote:
Originally Posted by jrwalte View Post

Sounds like you may have the sound card options set to not 'pass through' DD/DTS but decode it instead. It could also be a setting in your playback software where you don't have it set to pass through, either, and it's decoding DD/DTS. At some point, your PC is being told to decode a DD/DTS stream and reprocess as 2.1 PCM.

HOw are you passing audio to the 9800 over HDMI? SPDIF connector? If so, we'd need to know the model of your dell MB to determine if the on-board audio supports 5.1 pass through.

Im back to the integrated ATi HD-4200 card thats on the mobo. The Nvidia seemed to create more problems than it solved, especially audio-wise. Im using the HDMI port for sound that the box was intended to use (its a gigabyte GA-MA785GM-US2H Micro ATX mobo). I will look for the pass through option tomorrow in the MPC and Realtek settings. Thanks dude.
Reply
Reply

AVS Top Picks

post #32 of 47
12/24/09 at 6:31am
Quote:
Originally Posted by FacTheory View Post

Im back to the integrated ATi HD-4200 card thats on the mobo. The Nvidia seemed to create more problems than it solved, especially audio-wise. Im using the HDMI port for sound that the box was intended to use (its a gigabyte GA-MA785GM-US2H Micro ATX mobo). I will look for the pass through option tomorrow in the MPC and Realtek settings. Thanks dude.

Oh. I mixed this post up with another one that was using a dell with nvidia. This MB using HDMI would have no issues passing through DD/DTS. You just need to find the codec or software that's not passing through the audio.
Reply
Reply
post #33 of 47
12/24/09 at 6:42am
Hi FacTheory,

I had exactly the same issue as you have and just managed to get it resolved.
I'm running an ATI 4650 card into a Samsung LA40B550 LCD

Here's what I did:

1. You need to force the desktop settings to 1920x1080. Your refresh rate must be 60Hz (at least, for my Sammy monitor)
2. For some reason, the ATI drivers default to 15% underscanning using HDMI. You need to set this to 0%. It's buried very deep in the menus but it's there under LCD Scaling.
3. When you do this, the image will be waaay too big for the screen. You need to set the Monitor to be compatible with 1:1 pixel mapping.
4. In the Sammy monitor, you go to picture size and instead of 16:9 you need to set it to "screen fit". The 16:9 size has an automatic 5% overscanning default.

Looking at the desktop now it looks like it's supposed to and what you'd expect an LCD monitor to look like. Previously you could see that there was dithering taking place.

Let us know if this works.
Reply
Reply
post #34 of 47
12/24/09 at 7:16am
with Samsungs, make sure you are plugged into the HDMI2 port and have it labeled as PC in the tv's menu
Reply
Reply
post #35 of 47
12/24/09 at 7:58am
Each model is different. My Samsung is HDMI3 for PC. But it isn't necessary. It is only necessary if you're using a HDMI cable without sound and you need your TV speakers. The 'PC' labeled HDMI input supports the analog L/R. You can name any HDMI port to 'PC' on the Samsung and get the same results if you only need video.
Reply
Reply
post #36 of 47
12/24/09 at 10:57am
Thread Starter 
Thanks all, I got the video problems (scaling and judder) resolved!

Im working on the 5.1 audio but I havent had much time to troubleshoot recently.
Reply
Reply
post #37 of 47
12/24/09 at 11:21am
what ended up working?
Reply
Reply
post #38 of 47
12/26/09 at 9:10am
Thread Starter 
Quote:
Originally Posted by mcantu1 View Post

what ended up working?

I posted the solution in this thread but okay, here goes again.

Resolution problem:
Quote:
Originally Posted by Me View Post

Quote:
Originally Posted by bigbird999 View Post

Your tv is overscanning on the HDMI input with the NV card. Go to your TV settings menu and look for a dot for dot or just scan setting to turn off overscan to get 1:1 pixel mapping. Be aware that not all TVs support this over HDMI, Check your TV manual. If it doesn't you could try HDMI.

Your ATI was underscanning so you need to set the overscan slider in CCC to 0% (default is 15% for some strange reason). Depending on what version of CCC you have this setting may be hard to find. But it has been posted many times (I posted a solution to this within the last 2 days). Search ATI Overscan and you should find how to do it. All of this presumes you have your desktop resoltion set to 1920x1080.

BB

I owe you a beer.

Yeah Win7 grabbed a driver automatically and it didnt have CCC. I went out to ATIs site, grabbed the right driver and bam. I feel like an idiot, I'm not some total noob when it comes to this stuff and that sure makes me feel like one.



Judder Problem:

Quote:
Originally Posted by Me View Post

AH HA! Success!

The judder problem was happening for 5 seconds every three minutes. I couldnt for the life of me figure out wtf was going on. That is until my friend saw my PC and went WOW THE BACKGROUND CHANGES AUTOMATICALLY? (win7) And I went yeah, I set it to change...every...three.. minutes.... OMG. I'm an idiot. I should have thought of this ages ago, I just didnt think that a picture changing could use so much processor that it would judder my video for 6 seconds straight, I got a nice dual core proc =\\


So uh, yea, my video woes were taken care of. However, my 5.1 issue, while MUCH more fleshed out, still exists. I need the Gurus to help me out on this one.

I should probably start a new thread, but I am torn between being completely offtopic in my own thread and starting a new one that will likely just clutter up the board. If I dont get an answer here, Im reposting this issue in it's own thread.

5.1 Channels of Hell.

So, ATI 4200 HDMI Windows 7 Ent x86 running to Sony HT-IS100. I want 5.1 audio. I know my current setup (Realtek HD Audio Driver, Realtek HDMI driver, Shark007, AC3) is capable of giving out 5.1 so I know this CAN work, but for whatever reason, it does not. I think the problem has to do with bitstreaming audio or something but I do not understand this stuff well enough to make an accurate diagnosis. I need an audio Dr House here real quick.

Symptoms:

I've seen it work!!! With the Shark007 all setup and configured to run 5.1 and use/passthru to the AC3 filter, Ive SEEEN my receiver say 5.1. However this was only when playing an AVI with (DTS?) 6 channels of audio AND it only worked when I used WMP12.

6 Channel AVI with WMP - 5.1 Audio Bliss!
6 Channel AVI with MPC - fail (stereo only).
6 Channel MKV with MPC- fail (stereo only).
6 Channel MKV with WMP - fail (video is messed up too)

When I open the AC3 filter config when an MKV is playing I can see all 6 channels bouncing around, but it only outputs 2.0 stereo.

I neeeeed MKVs to work =[ Whats the difference between the 5.1 in an MKV and in an AVI. Why does it work in WMP??? what do I need to configure or change to make this damn thing use all 5 speakers? Its gotta be codec related if stupid WMP does something that MPC isnt doing. The more pressing issue tho is that MKVs dont work in anything. -_- I've heard some stuff about bitstreaming blu rays to be a pita, iono if that has anything to do with my issue but if it does then I will, very reluctantly, buy yet another video card. I understand the 5750 works well for this crap =[

do I need this to make this work???, Id love if I didnt have to get it....
Reply
Reply
post #39 of 47
12/26/09 at 9:55am
Quote:
Originally Posted by FacTheory View Post


6 Channel AVI with WMP - 5.1 Audio Bliss!
6 Channel AVI with MPC - fail (stereo only).
6 Channel MKV with MPC- fail (stereo only).
6 Channel MKV with WMP - fail (video is messed up too)

When I open the AC3 filter config when an MKV is playing I can see all 6 channels bouncing around, but it only outputs 2.0 stereo.

I neeeeed MKVs to work =[ Whats the difference between the 5.1 in an MKV and in an AVI. Why does it work in WMP??? what do I need to configure or change to make this damn thing use all 5 speakers? Its gotta be codec related if stupid WMP does something that MPC isnt doing. The more pressing issue tho is that MKVs dont work in anything. -_- I've heard some stuff about bitstreaming blu rays to be a pita, iono if that has anything to do with my issue but if it does then I will, very reluctantly, buy yet another video card. I understand the 5750 works well for this crap =[

do I need this to make this work???, Id love if I didnt have to get it....

MPC uses it's own filters unless you tell it not to. Make sure that the MPC audio decoder is configured to bit stream AC-3/DTS.
Reply
Reply
post #40 of 47
12/26/09 at 10:21am
Thread Starter 
Quote:
Originally Posted by babgvant View Post

MPC uses it's own filters unless you tell it not to. Make sure that the MPC audio decoder is configured to bit stream AC-3/DTS.

Ive done that actually, I disabled all internal filters in MPC so it runs using CoreAVC, Shark007 and AC3. Regardless, would having those settings correct fix my issues getting mkvs to run 5.1? I mean, does my vid card even support bitstreaming? The realtek settings say they support AC3, Dolby and DTS. Obviously something in MPC is wrong if WMP is doing something that it cannot. I will try to get MPC to at least do what WMP is doing right now before I move onto troubleshooting the REAL issue, MKVs not workin.

thanks


ps, at this screen, I only have Stereo as an option. =[

http://www.avsforum.com/avs-vb/attac...1&d=1236105665
Reply
Reply
post #41 of 47
12/26/09 at 11:41am
Quote:
Originally Posted by FacTheory View Post

Ive done that actually, I disabled all internal filters in MPC so it runs using CoreAVC, Shark007 and AC3. Regardless, would having those settings correct fix my issues getting mkvs to run 5.1? I mean, does my vid card even support bitstreaming? The realtek settings say they support AC3, Dolby and DTS. Obviously something in MPC is wrong if WMP is doing something that it cannot. I will try to get MPC to at least do what WMP is doing right now before I move onto troubleshooting the REAL issue, MKVs not workin.

S/PDIF and all of the HDMI applications support AC-3 and DTS bitstreaming.

Personally, I'd uninstall all the codec packs and just install Haali and the latest version of ffdshow. And see what plays (any MKV w/ AVC or VC-1 should at this point).

Quote:
Originally Posted by FacTheory View Post

ps, at this screen, I only have Stereo as an option. =[

http://www.avsforum.com/avs-vb/attac...1&d=1236105665

That's normal if you have HDMI that isn't multi-channel capable.
Reply
Reply
post #42 of 47
12/26/09 at 6:18pm
@FacTheory

HD 4200 HDMI supports

- stereo PCM (no multichannel LPCM so that you will see only "Stereo" in the speaker setup.)
- AC3/DTS bitstreams

What audio tracks your MKV files have? If they have only AC3 or DTS audio tracks, then AC3/DTS pass-through should work (with either MPC HomeCinema's internal AC3/DTS decoder, ffdshow or AC3Filter). If they have FLAC audio tracks, then FLAC is first decoded to multichannel LPCM (by MPC internal FLAC decoder or ffdshow or madFlac decoder), then multichannel LPCM must be encoded to AC3 (by ffdshow or AC3Filter).

If your MKV have FLAC and you want to send multichannel LPCM (lossless) instead of encoded AC3 (lossy), then you will need a discrete graphics card such as HD 4xxx/HD 5xxx/GeForce GT 2xx.
Reply
Reply
post #43 of 47
12/26/09 at 7:27pm
Quote:
Originally Posted by renethx View Post


If they have FLAC audio tracks, then FLAC is first decoded to multichannel LPCM (by MPC internal FLAC decoder or ffdshow or madFlac decoder), then multichannel LPCM must be encoded to AC3 (by ffdshow or AC3Filter).

IMO Reclock is a better option for in-graph encoding PCM to AC-3.
Reply
Reply
post #44 of 47
12/26/09 at 11:08pm
Thread Starter 
Quote:
Originally Posted by renethx View Post

@FacTheory

HD 4200 HDMI supports

- stereo PCM (no multichannel LPCM so that you will see only "Stereo" in the speaker setup.)
- AC3/DTS bitstreams

What audio tracks your MKV files have?


Quote:
Video: MPEG4 Video (H264) 1280x536 23.98fps [Video]
Audio: DTS 48000Hz 6ch [Audio]
Text [Subtitle]

General
Complete name : Z:\\Video\\Movies\\HD\\007 - Quantum of Solace\\007 - Quantum of Solace.mkv
Format : Matroska
File size : 4.35 GiB
Duration : 1h 46mn
Overall bit rate : 5 867 Kbps
Encoded date : UTC 2009-03-10 16:57:45
Writing application : mkvmerge v2.5.1 ('He Wasn't There') built on Feb 22 2009 18:19:47
Writing library : libebml v0.7.7 + libmatroska v0.8.1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 46mn
Bit rate : 4 240 Kbps
Nominal bit rate : 4 354 Kbps
Width : 1 280 pixels
Height : 536 pixels
Display aspect ratio : 2.35:1
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.258


says dts but iono, i saw the avi with dts work and I cant make the MKVs work for the life of me =[

I can post screenies of any of my stuff if people have more suggestions.

thanks
Reply
Reply
post #45 of 47
12/26/09 at 11:57pm
The simplest way to pass-through DTS is use the internal DTS decoder of MPC HomeCinema.

View in the menu > Options > Internal Filters > Transform Filters > double click "DTS" > select "SPDIF" in DTS Decoder.
Reply
Reply
post #46 of 47
12/27/09 at 8:42am
Thread Starter 
ya Im a dumbass. Its working for DTS encoded MKVs now. There was a check box that said something like "use SPDIF (disabled)" or something in the AC3 filter config on the left. I checked it and everything worked. Well this forum has been exceedingly helpful. THank you all for your posts, I am good to go with my new HTPC.
Reply
Reply
post #47 of 47
12/28/09 at 9:07am
Thread Starter 
What are some causes of and troubleshooting steps to reduce artifacting? I get it pretty bad on occasion. Usually when an object moves in front of a background with a pattern...

It is the TV, not the PC that is causing the artifacting, correct?
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Home Theater Computers

AVS Top Picks

AVS › AVS Forum › Video Components › Home Theater Computers › Since when is 1920x1080 a relative term? (LCD/ATI/nVidia issue)