Update 5.4.0 on Windows : no sound with all my videos

[Maik Qualmann]

According to QtAV, the audio backends will be used in the order as in the 
backend list. For Windows, here is the list:

"XAudio2" "DirectSound" "null"

I have set the "DirectSound" backend to the first position.
I can not reproduce the no sound output problem here, with a VM and a real 
Windows7 computer. I will test the days under Windows10.

Maik

On Montag, 23. Januar 2017 23:19:48 CET Gilles Caulier wrote:
> Maik,
> 
> What are you changed to select DirectSound SDK under Windows ?
> 
> Best
> 
> Gilles Caulier
> 
> 2017-01-22 22:52 GMT+01:00 Maik Qualmann <metzpinguin at gmail.com>:
> > Please download and install this Windows64 version for sound testing. It
> > use
> > as first device the DirectSound backend.
> > 
> > https://drive.google.com/open?id=0ByXDEhL2xmagZ1BMaERTYnVQMk0
> > 
> > Maik
> > 
> > On Sonntag, 22. Januar 2017 11:28:56 CET Gilles Caulier wrote:
> > > This can be an internal QtAV problem, or the way that we integrate in
> > > digiKam...
> > > 
> > > The issue can be related to encoding/compress audio track in video.
> > 
> > Plenty
> > 
> > > of format can be used in video container. ffmpeg is used by QtAV to
> > 
> > decode
> > 
> > > tracks. So, this can be a missing codec from ffmpeg.
> > > 
> > > For digiKam Windows bundle, we use MXE cross compiler environnement
> > > based
> > > on mingw.
> > > 
> > > http://mxe.cc/
> > > 
> > > MXE provide ffmpeg with at least GPL2 codecs redistributable.
> > > 
> > > The Windows QtAV player is compiled with native MSVC compiler, not
> > > MinGW,
> > > and with certainly native directx extension. I suspect that mxe directx
> > > access is missing. This can introduce some differences, but i'm not
> > > sure.
> > > 
> > > Before to investigate more around QtAV, i will contact QtAV lead
> > 
> > developer
> > 
> > > and CC him to a relevant bugzilla entry for a better expertise.
> > > 
> > > Please open a digiKam file in KDE bugzilla, with all information
> > > reported
> > > in this thread.
> > > 
> > > Thanks in advance
> > > 
> > > Gilles Caulier
> > > 
> > > 2017-01-22 10:38 GMT+01:00 nonobio <nonobio at gmail.com>:
> > > > Hi,
> > > > 
> > > > This issue is very annoying for me since i can use anymore Digikam to
> > > > manage my video files.
> > > > Do you need any details or informations that could help you.. to help
> > 
> > me ?
> > 
> > > > ;)
> > > > Thanks
> > > > 
> > > > Le 16/01/2017 à 14:40, nonobio a écrit :
> > > >> Hi,
> > > >> 
> > > >> I made the update today on my Windows 7 64 bits. Thanks for your
> > > >> work.
> > > >> 
> > > >> I have an issue : i have no sound anymore with any of my video failes
> > > >> (mp4, 3gp, mov...).
> > > >> 
> > > >> Thanks
> > 
> > --
> > Gruß Maik