[gst-devel] why playbin can not recognized my aac decoder

[Jan Schmidt]

gtxia wrote:
> hello all.
> 
> I developed a aac decoder and it can deal with thus sink caps
> 
> GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
>     GST_PAD_SINK,
>     GST_PAD_ALWAYS,
>     GST_STATIC_CAPS (
> 		"audio/mpeg, "
> 		"mpegversion = (int) {2, 4}, "
> 		"rate = (int) [8000, 96000], "
> 		"channels = (int) [1, 6]")
> 
> When I use playbin to play aac audio file. It's OK. But I want to use it
> to decoder aac framed audio in A/V file such as avi with its audio
> format is aac. My acc decoder can not be recognized by playbin. If I
> linked the caps manually. It's ok. I used --gst-debug=*5 to dump all
> inforamtions into a file. I can not find any useful informations. 
> 
> The playbin always complains with 
> 
> ** Message: don't know how to handle audio/mpeg, mpegversion=(int)4,
> framed=(boolean)true, codec_data=(buffer)1290, rate=(int)32000,
> channels=(int)2
> 

You're probably registering your element with GST_RANK_NONE, preventing
it from participating in the autoplugging.

Regards,
Jan.