how to render androidmedia's output yuv(NV12) without converting RGBA?

[luckychou]

In Android 4.4, I use the androidmedia(playbin2 automatically linked) plugin
to decode the H264 , and output format is NV12, but always
 " Frame is too late, dropping (deadline 0:00:00.031337867)"

I think it should be caused by the NV12=>RGBA conversion,
-------------------------
GStreamer+glconvert: 0:01:19.776569413 0x62ecfa30
gstglcolorconvert.c:1317:_init_convert Initializing color conversion from
NV12 to RGBA
-------------------------

My device supports YUV direct output,so, how can I do to force
render(glimagesink ?,) to direct  output  NV12, and to avoid NV12=>RGBA
transform ?

Thanks



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