Batch script - introducing a Python script call...

[gdogg371]

Previously I had a batch script like this:

Code:

"G:\Visual Studio 2017\C++ Projects\SkyQChannelChanger\Release\SkyQChannelChanger.exe" %1

taskkill /f /im vlc.exe /t

"G:\VLC\vlc" --ffmpeg-hw --avcodec-hw=any dshow:// :dshow-vdev="Video (00 Pro Capture HDMI 4K+)" :dshow-adev="Audio (2- 00 Pro Capture HDMI 4K+)" :dshow-threads=8 :dshow-aspect-ratio=16\:9 :dshow-size="3840x2160" :dshow-pixel_format=yuv444p16le :dshow-tune=film :dshow-preset=lossless :dshow-profile=main10 show-vcodec=x265 :dshow-fps=50 :dshow-crf=0 :dshow-acodec=mp4a :dshow-stereo-mode=5 :dshow-force-surround-sound=0 :dshow-ab=128 :dshow-samplerate=44100 :no-dshow-config :live-caching=300 --sout "#transcode{venc=ffmpeg,vcodec=mp2v,threads=8,aspect=16:9,width=3840,height=2160,fps=50,acodec=a52,ab=1500,channels=2,samplerate=48000,soverlay}:standard{access=file,dst=-,mux=ts}"

This piped the encoded video from my 4K capture card into NPVR as part of my extras device. This all works great now after a lot of work. However, I need to introduce some conditionality depending on whether I am calling a channel from my SKy Q STB, or my Enigma STB. Therefore, I have amended my batch script to enable a call to a Python script, in which I will introduce some if statements. My batch script now looks like this:

Code:

@echo off

"G:\Visual Studio 2017\C++ Projects\SkyQChannelChanger\Release\SkyQChannelChanger.exe" %1

taskkill /f /im vlc.exe /t

"G:\HTPC Scripts\NPVR Command Line\Command Line.py"

My Python script so far looks like this:

Code:

import os
import sys
import subprocess

os.chdir('G:\\VLC\\')

startupinfo = None
startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW

process = subprocess.Popen([
'vlc',
'--ffmpeg-hw',
'--avcodec-hw=any',
'dshow:// :dshow-vdev="Video (00 Pro Capture HDMI 4K+)" :dshow-adev="Audio (2- 00 Pro Capture HDMI 4K+)"',
':dshow-threads=8',
':dshow-aspect-ratio=16\:9',
':dshow-size="3840x2160"',
':dshow-pixel_format=yuv444p16le',
':dshow-tune=film',
':dshow-preset=lossless',
':dshow-profile=main10',
'show-vcodec=x265',
':dshow-fps=50',
':dshow-crf=0',
':dshow-acodec=mp4a',
':dshow-stereo-mode=5',
':dshow-force-surround-sound=0',
':dshow-ab=128',
':dshow-samplerate=44100',
':no-dshow-config',
':live-caching=300',
'--sout',
'"#transcode{venc=ffmpeg,vcodec=mp2v,threads=8,aspect=16:9,width=3840,height=2160,fps=50,acodec=a52,ab=1500,channels=2,samplerate=48000,soverlay}:standard{access=file,dst=-,mux=ts}"',
], stdout=subprocess.PIPE, startupinfo=startupinfo)

What appears to be happening is the script still opens VLC correctly with the encoded stream, however I don't really know where it is now being piped to. This is getting a bit out of my area of expertise. Thus I am not really sure what to Google to try and resolve.

I could as a last resort set up two extras devices, but this would require considerable work to remodel my XMLTV builder. If I can resolve the issue of where the encoded stream is going, I will then add in the additional logic for the Enigma2 box. This is just for the Sky Q STB so far...

Any ideas?

Thanks

[mvallevand]

Posting this question in a NextPVR V5 forum for the Windows server software makes zero sense to me.

Martin

[gdogg371]

where would you rather I posted it? can it be moved by admin if required?

[gdogg371]

anyway...switching the .py file for a sub .bat file seems to be the way to go, however I still don't understand where Python sent the encoded video...

[Graham]

Posting this question in a  NextPVR V5 forum for the Windows server software makes zero sense to me.

where would you rather I posted it? can it be moved by admin if required?

And good morning to you too, Martin ...  

There is a "Developers" sub-forum although it is labelled "For those wanting to develop plugins and skins ..." which is not what you are doing and NextPVR V5 does not support plugins (yet).

[gdogg371]

Hi - I am basically side loading my own plugins into NPVR via the extras device. So far I have a working prototype, but I am now looking at expanding the functionality.

[mvallevand]

My point is why are you expecting python help on the subprocess function here? I also wondered who your audience was?


I've already posted that I wasn't going to help with vlc. A hint though, if you have a working command that outputs to stdout all you need to do in python is

import subprocess

subprocess.call(command)

That's as far as I will take this.

Martin

[gdogg371]

sorry if i have offended you. i now have bigger issues in that since i have upgraded to the most recent version of NPVR my extras device and batch script is no longer working at all...even using my old method. i will start a separate thread for this now...

[mvallevand]

I wasn't offended in the least I was just trying to steer you to try another forum where you might actually be able to get an answer to your question.

Martin

[gdogg371]

I wasn't offended in the least I was just trying to steer you to try another forum where you might actually be able to get an answer to your question.

Martin

Anyway - I have just posted a new thread in the Windows sub thread, as my extras device is no longer calling the VLC command line arguments since I upgraded. It worked ok at first, but now seems to have stopped. I don't know what I am looking for in the logs, but something has gone wrong. I have removed the Python completely for now and just reverted to what previously worked...