https://bugs.kde.org/show_bug.cgi?id=414542
Bug ID: 414542
Summary: "--spdif --alsa-audio-device iec958" produces no audio
Product: kaffeine
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: mchehab+sams...@kernel.org
Reporter: jamie.march...@sympatico.ca
Target Milestone: ---
NOTES:
Some of the terms I use are explained in "Additional info"
Description of problem:
Passing "--spdif --alsa-audio-device iec958" to VLClib(remember Kaffeine is
just a front-end) causes no audio to be played. The source is Dolby Digital and
the command should send the Dolby to my receiver(this is called "passthrough").
Version-Release number of selected component (if applicable):
2.0.18
How reproducible:
If I start playing any audio with VLC while Kaffeine is playing a video(tested
by receiving an ATSC broadcast), sound plays from Kaffeine when VLC is closed
and seems to keep working until Kaffeine is closed. I used the GUI in VLC to
set it up in a way that matches those arguments, I have also tested VLC with
those arguments and it does indeed work correctly.
Under some rare unreproducible cases, I was able to get a Stereo audio track to
play but this was not passthrough(the light was not on).
Steps to Reproduce:
When testing this I used an ATSC broadcast, I have not fully tested other
features.
0. Click the "Settings" menu and click "Configure Kaffeine", in "libVLC" add
"--spdif --alsa-audio-device iec958" and then restart Kafffeine
1. Start a stream that can use SPDIF Passthrough(like receiving an ATSC
broadcast)
2. You will here silence
Actual results:
You will hear silence.(in one case this affected other programs too until
Kaffine was closed)
Expected results:
You here the stream.
Additional info:
In case you don't know some of the terms I used here:
SPDIF Passthrough:
Passes non-PCM streams(like Dolby Digital) directly to a decoder(amp or A/V
receiver) rather than having the PC decode it. No other sounds can play when
you do this.
ATSC:
Digital television broadcast in the USA and Canada(maybe other places too), can
be received with the correct hardware and software. (Kaffeine is the software)
The odd thing:
Kafffeine uses VLC as a backend and as I said it works fine.
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