[phonon-vlc] src: AudioDataOutput works fine with VLC 2.1 again (activate it in Backend)

[Harald Sitter]

On Wed, Jun 20, 2012 at 7:20 PM, Harald Sitter <sitter at kde.org> wrote:
> On Wed, Jun 20, 2012 at 5:05 PM, Harald Sitter <sitter at kde.org> wrote:
>> If anyone has VLC 2.0.1 or better yet VLC 2.0 git, please feel free to
>> remove the #if and test if it works for you. It will probably be a while
>> until VLC 2.1 gets out, so if we get a 2.0 release that fixes the issue
>> it would be preferable.
>
> 2.0.2 also seems to work so we lowered the restriction to < 2.0.0 and >= 2.0.2

Just to keep everyone posted, we are going to deactivate it again as
we essentially broke video playback with this change. There appears to
be a bug in libvlc's video output handling when using a stream output
to duplicate/transcode the pipeline (which is what we do with the
AudioDataOutput). This bug essentially prevents video output detection
*entirely*, which is too big a problem TBH. There is a workaround, but
it is not viable... we could also stream the video data to memory and
iff there is data we were to assume that there is a video (this of
course raises memory consumption and cpu consumption and therefore
overall sluggishness, which is an expense I do not find worthwhile).

HS