iOS: avfvideosrc(nv12) -> vp8enc(I420) failure

elio francesconi elio.francesconi at gmail.com
Sat Nov 16 01:37:56 PST 2013


Thanks Nicolas,
I've added target-bitrate to vp8enc, but the issue still persist.

I modified Tutorial3 with this pipeline, to reproduce my issue:
avfvideosrc ! video/x-raw,format=NV12,width=1280,height=720,framerate=30/1
! videoconvert ! vp8enc target-bitrate=200000 ! vp8dec ! autovideosink

I'm not sure how use vp8enc properties,
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-vp8enc.html#GstVP8Enc

can someone send me more hints?
I attached also a photo to explain my issue..
Thanks
Elio



2013/11/15 Nicolas Dufresne <nicolas.dufresne at collabora.com>

> Le jeudi 14 novembre 2013 à 22:51 +0100, Elio Francesconi a écrit :
> >
> > I created this pipeline, the only one I don’t receive an error from
> > vp8enc
> > avfvideosrc !
> > video/x-raw,format=NV12,width=480,height=360,framerate=30/1  !
> > videoconvert ! vp8enc ! rtpvp8pay ! udpsink host=127.0.0.1 port=5011
> >
> >
> > But it doesn’t work the video I receive is pixelated…
>
> You probably need to configure the encoder a bit. I would start by
> increasing the target-bitrate property, for more property simply do
> gst-inspect-1.0 vp8enc.
>
> cheers,
> Nicolas
>
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