Transcoded Stream pauses in Kodi although CPUs and network fine

[aderlopas]

Hello, 

this is most likely not a kodi problem, but I am putting it here as with Kodi I can get stats...
Same happens with the web interface (web interface shows message server is not fast enough - 0.914x) at 480p profile for instance.

when set to 720p, even to 480p profile and with transcoding, stream pauses for a few seconds every now and then.

You can find the video of what is happening here:  https://1drv.ms/v/s!AmtCz-mPInTyjZclKGHe...Q?e=4iPuad

You will see that at the same time the nextpvr server box is not at all stressed in terms of CPU or GPU...
I have also prioritized the network from and to this box and also tried to increase even to real-time the priority of the ffmpeg process but same result...
Any ideas?

[aderlopas]

Question is more like, given the box is given (unfortunately), can we tune ffmpeg further? And if so, do we need to expose any further parameters such as for instance the below (from: https://trac.ffmpeg.org/wiki/Encode/H.264)


Preset
A preset is a collection of options that will provide a certain encoding speed to compression ratio. A slower preset will provide better compression (compression is quality per filesize). This means that, for example, if you target a certain file size or constant bit rate, you will achieve better quality with a slower preset. Similarly, for constant quality encoding, you will simply save bitrate by choosing a slower preset.
Use the slowest preset that you have patience for. The available presets in descending order of speed are:

• ultrafast
  
  
• superfast
  
  
• veryfast
  
  
• faster
  
  
• fast
  
  
• medium – default preset
  
  
• slow
  
  
• slower
  
  
• veryslow
  
  
• placebo – ignore this as it is not useful (see FAQ)
  

You can see a list of current presets with -preset help (see example below). If you have the x264 binary installed, you can also see the exact settings these presets apply by running x264 --fullhelp.


Tune
------
You can optionally use -tune to change settings based upon the specifics of your input. Current tunings include:
---------------------------------
film – use for high quality movie content; lowers deblocking
animation – good for cartoons; uses higher deblocking and more reference frames
grain – preserves the grain structure in old, grainy film material
stillimage – good for slideshow-like content
fastdecode – allows faster decoding by disabling certain filters
zerolatency – good for fast encoding and low-latency streaming
psnr – ignore this as it is only used for codec development
ssim – ignore this as it is only used for codec development