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Topic: Panasonic PT-MZ770 setup question
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Joined: Dec 14, 2013
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Hello,

We purchased a Panasonic PT-MZ770 based on your recommendation here: http://www.bigscreenforums.com/forum_topic.cfm?which=20140&p=2

But we're having some issue with video playback. Video source is a Windows 10 machine with VLC, MPC-HC and NeoDCP. Video output is hdmi from a Geforce 1070. We screen mainly indie, shorts, etc movies, so we have a bunch of different formats, DCP, h264, x264, prores, etc. with various framerates.

The PT-MZ770 has a native resolution of 1920x1200. Of course all movies are either 1920x1080 or 2k DCPs - or lower.

First of all, since we only use the projector for movies, should we set the SCREEN FORMAT setting to 16:9 or leave it on 16:10?

Then, we are having issues with jittering/flickering/jerky playback depending on the file that is being played. The projector hdmi input EDID was initially setup (not by me) to 1920x1080i. It seems that if an input resolution is forced, the vertical scan frequency must be set to a fix value as well. I don't know the reason why it was setup like this - maybe cause the previous computer, when the projector was installed, was a Mac mini.

My question is: how should we setup the hdmi input to be able to handle all video sources "automatically"? Should we leave it on the default EDID? Or set 1920x1080i or 1920x1080p? And at which frequency? Is 60Hz fine for all fps?

EDID setting has 3 possibilities:

[DEFAULT] Standard setting.
[SCREEN FIT] Changes the EDID data according to the [SCREEN FORMAT] setting. ==> [SCREEN FORMAT] being the 16:10 or 16:9 setting mentioned above.
[USER] Set the [RESOLUTION] and [VERTICAL SCAN FREQUENCY] items as EDID.


If USER is set, then vertical scan frequency must be set to a fix value:
Select [60Hz], [50Hz], [30Hz], [25Hz], or [24Hz] when [1920x1080p] is selected for [RESOLUTION].
Select [60Hz], [50Hz], or [48Hz] when [1920x1080i] is selected for [RESOLUTION].
Select [60Hz] or [50Hz] when anything other than [1920x1080p] or [1920x1080i] is selected for [RESOLUTION].

My original thinking was that it should work simply like a computer monitor... so default EDID? Or does the SCREEN FIT setting with 16:9 format guarantee to always have proper content without additional black borders? Or user set, but then which setting guarantees all files play back correctly without any framerate/vertical scan frequency issues?

Thanks for taking the time to asnwer, I appreciate all the help I can get...
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Joined: Mar 28, 2005
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Screen format should match your screen in use. Typically, this is a 16:9 screen in home use, but it depends on your setup. If you have a 16:9 screen, then set the projector for 16:9.

Most video content is 16:9 or 2.35 aspect ratio. Some older stuff may be 4:3, but that isn't as often. But, this should be set to match your screen and the projector will force whatever is sent to it to fit in the aspect ratio you select for the screen.

As for the rest, I would leave it all on auto, then all settings will be handled entirely by your media player. Whether that be a PC or a dedicated media player of some sort, the playback device is of EXTREMLY high importance and over the years I've heard complaints upon complaints of PCs not being up to the task of proper video playback from a file. It takes some doing to get the players to work properly and is rarely an issue in the projector when things don't play smoothly. To test this, you can try a Blu-ray Disc player hooked up via HDMI to see how things look or try other video playback from the PC that isn't video. Just moving the mouse around and such. If this playback is smooth, but it isn't smooth from the video source, then it is the video source/PC introducing the problem.

Typical playback should always match the source, and your media player may be able to force this playback frame rate and should be able to hold the native aspect ratio.

The projector should not touch the aspect ratio at all and should remain as 'full' or 'native'. This way the PC is entirely in charge of sending a full 1920x1080 image to the projector at all times.

I have no idea of the quality of the PC or the software in use, and I have avoided going that direction myself because of the issues I have heard over the years. Many success stories, but they seem to take a fair bit of effort.

I'm not sure where you can get solid advice on home theater PCs, but I would Google for a forum which can answer more specific questions about the PC and the playback software. They will want to know the make, model, processor, memory, video card, and software in use as all these factors likely impact playback performance.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Joined: Dec 14, 2013
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Thank a lot, much appreciated!
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Joined: Mar 26, 2018
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If the software on the PC cannot enforce the proper resolution, you may need to adjust the resolution in the Windows display settings. If you need to set a specific refresh rate, you can set up a custom resolution in the Nvidia Control Panel or by using a 3rd party utility like this one: https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU