4k UHD Help

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4k UHD Help

Post by contrasteve on Wed Aug 13, 2014 4:01 am

I have 4k source material but when I try to play it its being outputted at 1080p , trouble shooting leads to the codec . is there anything buried in K-lite that I am not selecting or missing ?

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Re: 4k UHD Help

Post by Admin on Wed Aug 13, 2014 7:42 am

It can handle UHD just fine. The player will resize the video when it is too large to fit your screen. I can't say more at this time, because you did not provide any details about the player, renderer, and screen resolution.

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Re: 4k UHD Help

Post by contrasteve on Sat Aug 16, 2014 5:55 am

Im using the latest version of K Lite and VLC , I'm coming out of a GeForce GTX 660ti , now here's where it gets interesting ...I'm going into a Matrox triple head to with either Display Port or DVI D and that feeds 3 edge blended Christie Digital WUXGA 14K M series projectors giving me a total resolution of 5700 x 1200. The problem is my desktop wallpaper is across all three images but the video is only in the center and the players show the output is 1920x1080 while the content shows 3840 x 2160.


Sorry I am updating my Graphics driver now because the latest K Lite 1.0. 65 is crashing WMP

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Re: 4k UHD Help

Post by contrasteve on Sat Aug 16, 2014 9:22 am

so here is the source info ...

\Videos\4K Magical Glow Flares Depth - YouTube.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 30.3 MiB
Duration : 30s 92ms
Overall bit rate : 8 449 Kbps
Writing application : Lavf54.29.104

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30s 30ms
Bit rate : 8 332 Kbps
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.034
Stream size : 29.8 MiB (98%)

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 30s 92ms
Bit rate mode : Constant
Bit rate : 126 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 461 KiB (1%)




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Re: 4k UHD Help

Post by Admin on Sun Aug 17, 2014 12:44 am

First of all, I don't know if it is even possible to play video on the virtual 5760 x 1200 screen. It seems that the player just sees the individual displays. Extended desktop and surround gaming are features specifically implemented in Windows and graphics drivers. Video playback is something totally different. And even if it were possible, you would make little use of the extra displays due to the aspect ratio of the video. Most of the extra space would be occupied by black bars on the sides.

So given a single display with a resolution of 1920x1200, the video will be displayed at 1920x1080 (to maintain correct aspect ratio) and padded with black bars at the top/bottom.

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Re: 4k UHD Help

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