[gst-devel] HDMI video support in Gstreamer

Discussion:

Chen, Weian

2008-12-09 06:43:32 UTC

Hi all:

I can't find HDMI video support in Gstreamer. Could anyone here tell me why? Not feasible or just lack of resource?

If someone has done some investigation, could you please give me some hints?

Thanks in advance.

Weian

Stefan Kost

2008-12-09 07:17:39 UTC

Permalink

hi,

I can’t find HDMI video support in Gstreamer. Could anyone here tell
me why? Not feasible or just lack of resource?

HDMI is not a format, its a physical input/output. Not sure whats the
best API on linux to support it.

Stefan

If someone has done some investigation, could you please give me some hints?
Thanks in advance.
Weian
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Chen, Weian

2008-12-09 07:21:11 UTC

Permalink

Hi

Thanks for your info.

And what I want to do is to develop a sink element to send decoded data to HDMI. Is it possible?

Weian

-----Original Message-----
From: Stefan Kost [mailto:***@hora-obscura.de]
Sent: 2008年12月9日 15:18
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] HDMI video support in Gstreamer

hi,

I can’t find HDMI video support in Gstreamer. Could anyone here tell
me why? Not feasible or just lack of resource?

HDMI is not a format, its a physical input/output. Not sure whats the
best API on linux to support it.

Stefan

Stefan Kost

2008-12-09 08:05:31 UTC

Permalink

hi,

Post by Chen, Weian
Hi
Thanks for your info.
And what I want to do is to develop a sink element to send decoded data to HDMI. Is it possible?

Sure. There is a base class for sinks (GstBaseSink). This is used e.g.
by xvimagesink or ximagesink. Its recommened to use that, as it
implements most generic functionality needed for A/V sync.

What you need to find out is what api is used to output to hdmi on linux
(is is v4l2?).

Stefan

Post by Chen, Weian
Weian
-----Original Message-----
Sent: 2008年12月9日 15:18
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] HDMI video support in Gstreamer
hi,

I can’t find HDMI video support in Gstreamer. Could anyone here tell
me why? Not feasible or just lack of resource?

HDMI is not a format, its a physical input/output. Not sure whats the
best API on linux to support it.
Stefan

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Bastien Nocera

2008-12-09 09:27:59 UTC

Permalink

Post by Stefan Kost
hi,

Post by Chen, Weian
Hi
Thanks for your info.
And what I want to do is to develop a sink element to send decoded data to HDMI. Is it possible?

Sure. There is a base class for sinks (GstBaseSink). This is used e.g.
by xvimagesink or ximagesink. Its recommened to use that, as it
implements most generic functionality needed for A/V sync.
What you need to find out is what api is used to output to hdmi on linux
(is is v4l2?).

Chen, Weian

2008-12-10 01:53:08 UTC

Permalink

Thank you all.

And my thinking is that if we treat HDMI as generic digital output such as DVI, all display will be sent to HDMI.
What I want is that only video/audio data playback within Gstreamer framework will be output to HDMI interface.

Any comments?

Thanks in advanced.

Weian
-----Original Message-----
From: Bastien Nocera [mailto:***@hadess.net]
Sent: 2008年12月9日 17:28
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] HDMI video support in Gstreamer

Post by Stefan Kost
hi,

Post by Chen, Weian
Hi
Thanks for your info.
And what I want to do is to develop a sink element to send decoded data to HDMI. Is it possible?

Sure. There is a base class for sinks (GstBaseSink). This is used e.g.
by xvimagesink or ximagesink. Its recommened to use that, as it
implements most generic functionality needed for A/V sync.
What you need to find out is what api is used to output to hdmi on linux
(is is v4l2?).

Why would it be any different from output through DVI, or another
digital output?

X should know how to drive it, the only hard bit being the HDMI audio.
See also:
https://fedoraproject.org/wiki/Features/HDTVEnhancements

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