Samsung 2-4k playback issues

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Nadahar
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Joined: Tue Jun 09, 2015 5:57 pm

Re: Samsung 2-4k playback issues

Post by Nadahar » Sun Jan 28, 2018 3:16 am

If there are playback issues when the file isn't being transcoded, the renderer either doesn't fully support the format or the network bandwidth is too low to transfer it in real time. I'd suspect the network bandwidth..

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Sami32
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Re: Samsung 2-4k playback issues

Post by Sami32 » Sun Jan 28, 2018 6:48 am

Hi @backs999,

you could have Intel I9 that it will still not be suffisant, and you will not do much more than my old CPU ;)
The reason is that the MPEG-2 encoder is not multithread.
So, as long as you stick to H.264, you should be able to transcode, if not too much is asked. You was transcoding and resizing, so that used your CPU a lot, though your log has been made in trace log to late to give more precise informations. So, as you should avoid unecessary transcoding now, you should get better results.

hetzjagd
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Re: Samsung 2-4k playback issues

Post by hetzjagd » Sat Feb 03, 2018 5:12 pm

abcd wrote:
Sat Jan 27, 2018 2:04 am
I have the same TV. Go into your UMS install folder and find the file Samsung-NotCD.conf inside the renderers folder. Open it in a text editor, clear everything, and paste the following:

Code: Select all

#----------------------------------------------------------------------------
TranscodeVideo = MPEGTS-H264-AC3
SeekByTime = exclusive
MaxVideoWidth = 3840
MaxVideoHeight = 2160
SupportedVideoBitDepths = 8,10
H264Level41Limited = false
StreamSubsForTranscodedVideo = false
Then save the file, quit UMS and restart it. Then try to play the video and it'll probably work. With these settings it probably won't have to transcode the 4K movies, which will take all of the mentioned problems away. See also my thread here.
Just wanted to chime in that this fixed my playback issues on a Samsung 60" UA60JS7200. Thanks a lot

However I have some 4k video which is 4096x2050 and 4096x2304 resolution that also currently fail to play with the same error I was previously getting for all 4k content. To get support for that can I simply just increase the MaxVideoWidth to 4096 and the MaxVideoHeight to 2304? Or will that have an effect on the other 3840x2160 4k content and create an issue?

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valib
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Re: Samsung 2-4k playback issues

Post by valib » Sat Feb 03, 2018 9:04 pm

The simple answer is yes. You can set the maximal X and Y which from the logic means that everything below that size will be send to renderer without transcoding.

hetzjagd
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Joined: Tue Jan 26, 2016 9:57 pm

Re: Samsung 2-4k playback issues

Post by hetzjagd » Sat Feb 03, 2018 9:58 pm

valib wrote:
Sat Feb 03, 2018 9:04 pm
Simple ansver is yes. You can set the maximal X and Y which from the logic means that everything below that size will be send to renderer without transcoding.
Hmm I tried that but some of the videos still fail. What I can see is that one of the file which is 3840x2160, it shows up on UMS as being 976.6kb in size but the file on my computer is actually 2gb+. This means UMS is trying to transcode it right?

The same files have been tested on my PC and they play fine. From the look of the content, they might be HDR which my TV does not support. How can I tell if they are HDR?

Some info about the file, I don't know if it helps. I'm using version 6.8.0 of UMS

Code: Select all

General
Complete name                            : E:\4K\LG 4K demos\Europe.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 2.04 GiB
Duration                                 : 2 min 20 s
Overall bit rate mode                    : Constant
Overall bit rate                         : 125 Mb/s
Encoded date                             : UTC 2012-07-25 16:06:44
Tagged date                              : UTC 2012-07-25 16:06:44

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L5.1
Format settings                          : CABAC / 3 Ref Frames
Format settings, CABAC                   : Yes
Format settings, RefFrames               : 3 frames
Format settings, GOP                     : M=3, N=33
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 2 min 20 s
Bit rate mode                            : Constant
Bit rate                                 : 125 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (23976/1000) FPS
Original frame rate                      : 23.976 (24000/1001) FPS
Standard                                 : NTSC
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.629
Stream size                              : 2.04 GiB (100%)
Language                                 : English
Encoded date                             : UTC 2012-07-25 16:06:45
Tagged date                              : UTC 2012-07-25 16:06:45
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

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