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Date: Wed, 18 Feb 2015 08:34:43 -0500
From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
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To: Zahari Doychev <zahari.doychev@linux.com>,
	Fabio Estevam <festevam@gmail.com>
CC: Robert Schwebel <r.schwebel@pengutronix.de>,
	Philipp Zabel <p.zabel@pengutronix.de>,
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	linux-media <linux-media@vger.kernel.org>,
	Hans Verkuil <hverkuil@xs4all.nl>,
	Sascha Hauer <kernel@pengutronix.de>
Subject: Re: Using the coda driver with Gstreamer
References: <CAOMZO5AX0R-s94-5m0G=SKkNb38u+jZo=7Toa+LDOkiJLAh=Tg@mail.gmail.com> <20141117185554.GW25554@pengutronix.de> <CAOMZO5DGR=Y1MVAc46OG6f26s9kEAoT+XCXgyezFOefM6H_NQg@mail.gmail.com> <CAOMZO5CtXEzBw2_McwTpn3S4FB_8wRE-HYTghv=ceBo_AAuMqA@mail.gmail.com> <546B92E3.30105@collabora.com> <CAOMZO5AkyqNt5g8+AVhoLdLiKv20_q9YRQidNv+2JuOO4BBzSg@mail.gmail.com> <20150218084245.GB30358@riot.fritz.box>
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Le 2015-02-18 03:42, Zahari Doychev a écrit :
>> gst-launch-1.0 filesrc
>> >location=/home/H264_test1_Talkinghead_mp4_480x360.mp4 ! qtdemux !
>> >h264parse ! v4l2video1dec ! videoconvert ! fbdevsink
> I am using this pipeline with gstreamer 1.4.5 and current media branch but I am
> getting very poor performance 1-2 fps when playing 800x400 video. Is it possible
> that fbdevsink is too slow for that? Does anyone know what is going wrong?
In this context, you most likely have a conversion happening in 
videoconvert followed by a copy at fbdevsink. Framebuffer device is not 
a very good solution if performance matter (no possible zero-copy). 
Specially if the selected framebuffer color format does not match the 
decoded format.

Nicolas