[gst-devel] Dropping buffers when pausing live stream

William Gerecke gerecke at gmail.com
Sat Oct 10 16:48:58 CEST 2009


I can't figure out how to reply on this list and responding by e-mail...

Did you consider the valve element for this purpose? The element can be
placed upstream of your processor intensive elements and turned on or off
using the "drop" property.  When drop is set to TRUE the element drops data
thereby preventing buffer overflows.



On 10/9/09, Arnout Vandecappelle <arnout at mind.be> wrote:
> Hoi all,
> My application is displaying live media that comes in over http or rtsp.
> Sometimes the stream has to be paused (because it is invisible and I don't
> want to waste CPU cycles on decoding).  However, simply pausing the
> pipeline
> will eventually disconnect the source because of overflowing socket
> buffers.
> Also, when playing again, I don't want to render a second of old data.
> The solution I had in mind is to port the dropping behaviour of queue to
> multiqueue.  Then I pause the sink elements, which makes the queues fill up
> and triggers the dropping.  When playing again, there is still a bit of
> stale
> data but it is recent stale data (and probably rendering delay will cause
> some
> more data to be dropped in the near future).
> Does this sound like a good idea?  Anybody have a better idea?
> Regards,
> Arnout
> --
> Arnout Vandecappelle                               arnout at mind be
> Senior Embedded Software Architect                 +32-16-286540
> Essensium/Mind                                     http://www.mind.be
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