How to stream media to the ROKU4 from a DLNA device

How to stream media to the ROKU4 from a DLNA device

The ROKU4 is a very powerful streaming device. The OS is very simple and the response is very quick. Watching 4K is excellent, there is no delay or tearing in the image. No doubt there will be a few other streaming devices available but at present Amazon Fire TV, Apple TV and many other streaming are not as capable as this unit at streaming 4K@60fps over HDMI2.0. HDCP2.2 is available to support copyright protection. Serviio streaming from Windows. The roku4 can provide 4K UHD videos via NETFLIX and other sources

RX480 power draw, temperature and other sensors

If you use GPU-Z this gives you an indication of power draw, temperature and many other sensors on RX480

https://sites.google.com/site/windows10okok/

h264 and LAV

What we really need is someone with an NVidia or Intel Graphics to play the same vids using LAV with DXVA turned on and report back.

Looking back at the LAV fixes over the last couple of years these issues are mentioned many times. These issues are probably ignored by many software houses as the bog standard h264 works without dxva, on many apps the DXVA is turned on as default and cannot be turned off and I believe that is what is causing the corruption. However this issue is affecting many users and needs fixing.

These two video I am sharing play fine for me using WMP

They screw up when played using DVBviewer and MPC-HCx64

In MPC-HCx64 the videos also fail when LAV filter is disabled. Disabled the codec does not appear to do anything but if you change the filter DXVA settings then that does make a difference.

The unknown factor is what CODEC settings does WMP use and how to change them.

01-09_22-57-32_NHK World HD_NHK Newsline.ts - Google Drive

Test06012017 - 2.ts - Google Drive


Just added those videos to my DLNA streamer running from my PC and I can confirm they play perfectly on my SAMSUNG UE55KS9000, which is what is expected. The TV will have its own GPU so this seems to indicate there is no problem with the videos themselves.

yes as I mentioned before progressive scan videos work most of the time.....

I have loads of videos taken by iphones (1080p) and all play fine with LAV DXVA turned on.

AMD try this video which works with LAV h.264 ....1080p

Busy Bees.MOV - Google Drive

RX480 h.264 problem update

ray_m

Hi, Engineering have analysed the ciip you provided and comeback saying "the corruption you see is because the clip itself is already corrupted, the first frame is a B-frame and it does not contain and SPS/PPS."  This of course is beyond my pay grade, but I found something odd. No matter what settings I use in MPCHC, the video is corrupted. If I play the same clip in VLC is plays fine. I've gone back responding that you also experience the corruption while watching the live TV broadcast. Is this correct ?

You

Hi Ray, thanks for your response. I can confirm that when I enable LAV filter DXVA2 with H264 hw acc, the picture is corrupt when I watch it live, same applies when I use Microsoft decoder. This issue of no SPS/PPS in the media type was supposedly fixed by LAV support team in version 0.66.0
Also in my case that video I sent you plays fine in  MPCHC and DVBviewer when I disable h264 in LAV filter. 

LAV Filters 0.68.0 out - General DVBViewer Pro/GE...

If your engineers want to remote on to my PC let me know and I will try and help. Just as an additional note other users have uploaded videos for testing and it may be an idea to get another video from someone else just in case I have something wrong with my rig.

The question you need to ask is why does everything play fine with no HW acceleration h.264 and it goes wrong with DXVA2 turned on for h.264.


 what are SPS/PPS


Just spent about half an hour changing channels (all H.264 1080i) and noticed a variety of results. The data stream can vary from approx 3MBit/s to 10MBit/s ....most of the channels with very low bit rate the picture is very bad, the HD channels with higher bit rates fare a lot better and in some cases are ready for a minute or so before you notice a failure. This obviously throws a different perspective of the problem. The channels I was looking at in the UK ....BBC1 HD, ITV1 HD Channel 4 on Freeview, also tested on Freesat ....one channel NHK World HD the picture is totally frozen ( the sound is OK).


​01-09_22-57-32_NHK World HD_NHK Newsline.ts - Goo... 
​
​The above video just recorded from NHK World HD the picture totally freezes when played live or recorded using H264 HW acc DXVA, when turned off it plays fine.  This was taken off freesat  (DVB-S2) so is different transmission type just in case it was DVB-T2 that was causing the issue.

btw Ray, when I play the first video I sent you on Friday in MPCHC with h.264 turned off in LAV it plays fine for me. Don't forget that if you use another decoder it may have H.264 HW acc turned on as default so may be initiating DXVA HW acceleration.

Problem reproduced by AMD

Hey everyone , problem has been reproduced by AMD, so now give them some time to analyse.
I uploaded a video and they could reproduce.


Quote from AMD

"Okay, I enabled DXVA in MPCHC and can immediately see the issue. Off to Engineering it goes"