Help. IPTV audio. 1ch works. 1ch doesn't. w/examples+logs

[snard]

Hi NextPVR.

I installed NextPVR on windows 10 for the first time the other day. I would want to use NPVR with a simple IPTV m3u playlist setup. For public channels only.

I had trouble with getting audio to work (no sound) on some of my channels. Read up the best I could and installed LAV. Set all decoder settings to LAV.
That helped. I now got sound on some channels, on others still don't.

To test this further and make it simpler, I made a playlist with 1 working channel and 1ch not working. 
See the enclosed playlist de-nextpvr.m3u. It contains:

Working. The "SR fernsehen" channel stream from playlist: https://srfs.akamaized.net/hls/live/6896...index.m3u8
Not working. The "HR fernsehen" channel stream from playlist: https://hrhls.akamaized.net/hls/live/202...index.m3u8

Test cases:
-----------

1.
Start the NextPVR Client windows program.
Start watching Live TV channel "SR fernsehen". VIDEO WORKS. AUDIO WORKS.
Exit the NextPVR Client windows program.
See enclosed log file: (SR Fernsehen HD).Watch-WITH-SOUND.NPVR.log.1.txt

2.
Start the NextPVR Client windows program.
Start watching Live TV channel "HR fernsehen". VIDEO WORKS. ***Audio DOES NOT WORK***.
Exit the NextPVR Client windows program.
See enclosed log file: (HR Fernsehen HD).Watch-WITHOUT-SOUND.NPVR.log.1.txt

All decoder settings set to LAV.

Would it be possible to get audio to work in example 2.
That's for the channel "HR fernsehen" channel stream from playlist: https://hrhls.akamaized.net/hls/live/202...index.m3u8





- mike
  NPVR-attachment.zip (Size: 4.93 KB / Downloads: 1)

[mvallevand]

I've seen those streams before and they are interesting playlists because of their 2 use of catchup TV. In NextPVR I have always been curious can you tell me if they play at the current time or two hours in the past?

In any case these URLs are sent to ffmpeg for capture because NextPVR doesn't natively support separate audio and video streams. NextPVR is requesting an audio stream -map 0:a:0 that doesn't exist. It is actually difficult to get ffmpeg to detect the correct stream automatically on that complex m3u8.

You could do it with extra if need be since it allows you to pick the streams yourself.

Code:

<extras>
  <channel name="HR fernsehen">
    <command>ffmpeg.exe</command>
    <args>-i https://hrhls.akamaized.net/hls/live/2024525-b/hrhls/master-1080p-5000.m3u8 -i https://hrhls.akamaized.net/hls/live/2024525/hrhls/master-audio1-1328.m3u8  -codec copy -f mpegts -</args>
  </channel>
</extras>

Martin