Possible to Un-Negotiate Capabilities?

[Tim-Philipp Müller]

On Tue, 2013-05-14 at 17:58 -0400, John Westing wrote:

> I'm using 0.10.36 and don't see a New Caps event. Is there is an
> comparable event for 0.10.xx users?

No event. You just put the new caps on the first buffer when the format
changes and push that.

Cheers
 -Tim 


> On Tue, May 14, 2013 at 3:47 PM, Tim-Philipp Müller <t.i.m at zen.co.uk>
> wrote:
>         On Tue, 2013-05-14 at 12:32 -0700, johnwesting wrote:
>         
>         > Quick question, is it possible to un-negotiate capabilities
>         after they have
>         > been negotiated and the pipeline has started playing? If for
>         example, I have
>         > a source element that creates either AAC or MP3, and pipes
>         the data into
>         > decodebin, is it possible to switch from AAC to MP3 or vice
>         versa in real
>         > time, or would I have to tear down the pipeline and start
>         over. Ex:
>         >
>         > gst-launch aacormp3src ! decodebin ! alsasink
>         
>         
>         It's possible in general in principle - you would just send a
>         new caps
>         event and then buffers in the new format.
>         
>         However, I don't think decodebin supports this.
>         
>         Something like
>         
>           aacormp3src ! autoconvert ! audioconvert ! alsasink
>         
>         *might* work.
>         
>         Another possibility might be to have dynamic pads and add a
>         new pad for
>         the new format, send EOS on the old one and remove it, then
>         send data on
>         the new one. playbin *might* handle this (but I'm not 100%
>         sure if it
>         will do this for sources too or only demuxers).
>         
>          Cheers
>           -Tim
>         
>         
>         
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