How does decodebin work?

[Tim-Philipp Müller]

On Wed, 2013-01-30 at 15:26 +0530, rajnikant jachak wrote:

Hi,

> You can follow the link
> http://gstreamer.freedesktop.org/data/doc/gstreamer/0.10.30/pwg/html/section-types-typefind.html
> one can specify the rank in 'gst_type_find_register' api.

That's the rank for typefinders, not for decoders.

Decoder/demuxer ranks are passed in your plugin_init function where you
do gst_element_register(). Check list:

 - register with a rank higher than avdec_h264 (PRIMARY + 100 should do)
 - make sure your sink pad template caps are right
 - check your element class details to make sure it contains "Decoder"

Cheers 
-Tim

> On Wed, Jan 30, 2013 at 11:57 AM, Baby Octopus
> <jagadishkamathk at gmail.com> wrote:
>         How does an autoplug element like decodebin work? Suppose if I
>         add my own
>         H264 decoder say mydec_h264dec which is better than
>         avdec_h264, how does it
>         choose between avdec_h264 and mydec_h264dec? Where is the rank
>         specified?
>         I'm quite new to this. I could not find this in docs
>         
>         ~BO
>         
>         
>         
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> 
> 
> -- 
> Regards,
> Rajnikant Jachak.
> 
> The pessimist sees difficulty in every opportunity. The optimist sees
> the opportunity in every difficulty. 
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