After upgrade from V4 to V6, default language & skip issues

[Fred555]

Hi,

I've been using NextPVR V4 for 3 years and I did not upgrade until now as the program worked very well.
I followed the upgrade instructions, starting with my existing config.xml and npvr.db3 file.

There appears to be 2 new issues with the Desktop app on Windows 10:
1. The default recording playback language specified in config.xml no longer works
2. The skip forward/backward behavior is weird (makes strange noise and takes longer)

More details on issue 1
config.xml includes this line: <LanguagePreference1>qaa</LanguagePreference1>

The recordings are made via over the air HDTV in France.
The streams include 3 languages tracks, as show in NPVR.log:
      <Stream>
        <PID>330</PID>
        <StreamType>6</StreamType>
        <stream_identifier_descriptor>
          <component_tag>2</component_tag>
        </stream_identifier_descriptor>
        <Language>fra</Language>
        <AudioType>0</AudioType>
        <EAC3_descriptor>
        </EAC3_descriptor>
      </Stream>
      <Stream>
        <PID>331</PID>
        <StreamType>6</StreamType>
        <stream_identifier_descriptor>
          <component_tag>3</component_tag>
        </stream_identifier_descriptor>
        <Language>qad</Language>
        <AudioType>0</AudioType>
        <unparsed_descriptor>0x7F</unparsed_descriptor>
        <EAC3_descriptor>
        </EAC3_descriptor>
      </Stream>
      <Stream>
        <PID>332</PID>
        <StreamType>6</StreamType>
        <stream_identifier_descriptor>
          <component_tag>4</component_tag>
        </stream_identifier_descriptor>
        <Language>qaa</Language>
        <AudioType>0</AudioType>
        <EAC3_descriptor>
        </EAC3_descriptor>
      </Stream>


Playback via the Desktop client now always use the default language (fra), instead of qaa (original version, often in English), specified in LanguagePreference1 (unless I manually change the language via a right mouse click):
    <LanguagePreferenceEIT>default</LanguagePreferenceEIT>
    <LanguagePreference1>qaa</LanguagePreference1>
    <LanguagePreference2>default</LanguagePreference2>


The playback via the Web client works as expected and does select qaa by default, as long as I keep the default settings in the Transcoder tab. If I change either Video Encoder from CPU to NVIDIA or Preferred Streaming Profile from Default to 720p, then the Web client also use the default language for playback, instead of qaa.

However, making any change to Client Settings -> Decoders does not seem to affect the playback language in the Desktop app.


More details on issue 2
The skip forward/backward behavior during playback is weird, while it worked perfectly with V4.
Skip makes strange noise and it takes longer to get a clear picture after the skip (The image is blurry for 1 to 2 seconds). 

I have programmed my Snapstream Firefly remote control with different forward & backward skips (from 15s to 6 minutes),
doing many repeated 15s skip operations to reach the target skip time. 

My PC is high end (Intel i7, 16GB RAM, NVIDIA 3070) and I'm not CPU restricted. The recordings however are located on a HDD
(not a SSD), so disk seek/read time may be a factor (though the config has not changed from V4).  

I made the following change, which makes the issue slightly better, but does not fix it:
In Settings -> Decoders -> Video Decoders -> H.264 Video, I changed from Microsoft to LAV.
Now all Video & Audio Settings use LAV decoders.

I tried pretty much every possible combination of Decoders settings, but this does not make a difference regarding either issue #1 or #2.

Thanks!

[sub]

Can you supply a sample recording, so I can check the audio selection when playing via the nextpvr.exe?

[Fred555]

Sure. Attached...

[mvallevand]

Samples need to be linked from external sites like OneDrive GoogleDrive etc

[Fred555]

OK, here's the external link: https://drive.google.com/file/d/1-hMgMEx...sp=sharing

Thanks!

[sub]

OK, here's the external link: https://drive.google.com/file/d/1-hMgMEx...sp=sharing

Thanks!

Can you try updating these two files in the NextPVR\Client directory, and let me know if it helps with the audio stream selection?

[Fred555]

Yes, the files you provided solve the issue with the audio stream selection. Thanks!

The only issue remaining is the playback skip issue with the Desktop app.
For some reason it is pretty bad with V6, while there was no issue with V4...