[Interest] QtMultimedia and Live-TV

Lopes Yoann Yoann.Lopes at digia.com
Fri May 30 14:21:41 CEST 2014

On May 26, 2014, at 9:05 PM, Cornelius Hald wrote:

is it possible to use Live-TV (e.g. DVB-S) on Linux using QtMultimedia
and QtQuick? I guess that would involve Video4Linux and GStreamer. So
basically it should be mostly the same as using a webcam. Right?

You're right it's mostly the same. It should work simply by passing the device path to the QCamera constructor, like so: QCamera("/dev/video1")
Of course, you'll have to tune the TV tuner directly, using V4L2 for example.

And how is the situation on Windows?
Better? Worse?

On Windows, DirectShow treats all video capture devices the same way. You should see it among the available cameras from QCamera.
Like for GStreamer, you'll have to find a way to tune the TV tuner, which might not be possible without accessing the internal DS graph.

Last but not least and in both cases, even if you manage to get the video part working, you won't have any sound... The camera backend doesn't connect any audio input to an audio output device.

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