config.xml

[MaxOne72]

is there anyway of getting hardware transcoding working with livetv instead of cpu?

Thanks.

[sub]

There is some complications. NextPVR normally runs as a service. Unfortunately because of the way Windows works, GPUs are not accessible from background services - they need to be used from processes running on the desktop (which is being presented by the graphics card).

You can stop the service, and instead run 'nrecord.exe RUN' from a command prompt, and set the 'Video Encoder' setting on the Settings->Clients screen to either NVidia or Quicksync.

[sub]

In reality you're better off using a client that does require transcoding.

[mvallevand]

Yes if you can figure out the ffmpeg setting to do this for your GPU environment they can be entered in config.xml as you suspected and replace
default here <TranscodeHLS>default</TranscodeHLS>

The current settings are

Code:

<TranscodeArgsHLS>-y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize 2698344 -vsync vfr -profile:v high -level 41 -aspect [ASPECT] -force_key_frames \"expr:gte(t,n_forced*3)\" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af \"adelay=1,aresample=async=1\" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]</TranscodeArgsHLS>

YMMV.

If you are serious about trying this use v5

Martin

[Bruce]

There is some complications. NextPVR normally runs as a service. Unfortunately because of the way Windows works, GPUs are not accessible from background services - they need to be used from processes running on the desktop (which is being presented by the graphics card).

You can stop the service, and instead run 'nrecord.exe RUN' from a command prompt, and set the 'Video Encoder' setting on the Settings->Clients screen to either NVidia or Quicksync.

I dusted off 4.2.5 to use with my Ceton tuners running with windows 8.1 and an I7-3770K. Turning on intel quicksync took cpu from 30-50% to less than 10%.

chatGPT said to use "nrecord -noservice". I told it the actual solution was "nrecord RUN" and it replied that it would inform any future npvr questioners of this response.