ios hardware decoding

[Dmitriy Nikolin]

Hello, 
i try to use gsteamer for live streaming from raspberry to iPhone and i get some problems. i want to use hardware decoding on iPhone and what i get ( gstreamer 1.5.9, ios 8.4.1)

sender raspberry pipeline: raspivid -t 0 -w 1024 -h 576 -fps 30 -b 3000000 -o - | gst-launch-1.0 -v fdsrc ! h264parse ! rtph264pay config-interval=5 pt=96 mtu=1380 ! udpsink host=192.168.0.103 port=6000

receiver iphone pipeline : udpsrc port=6000 ! application/x-rtp, payload=96 ! rtph264depay ! h264parse ! vtdec ! glimagesink

and i get warnings : 
0:00:13.707789000 [331m 2418[00m  0x49875e0 [31;01mERROR  [00m [00m               vtdec vtdec.c:700:gst_vtdec_session_output_callback:<vtdec0>[00m Error decoding frame -12909
0:00:13.707903000 [331m 2418[00m  0x49875e0 [33;01mWARN   [00m [00m               vtdec vtdec.c:736:gst_vtdec_session_output_callback:<vtdec0>[00m Frame dropped 0x41be530 52
0:00:13.744789000 [331m 2418[00m  0x49872c0 [31;01mERROR  [00m [00m               vtdec vtdec.c:700:gst_vtdec_session_output_callback:<vtdec0>[00m Error decoding frame -12909
0:00:13.744913000 [331m 2418[00m  0x49872c0 [33;01mWARN   [00m [00m               vtdec vtdec.c:736:gst_vtdec_session_output_callback:<vtdec0>[00m Frame dropped 0x41be7b0 53
State changed to PLAYING
 0:00:18.596555000 [331m 2418[00m  0x48ed1c0 [33;01mWARN   [00m [00m            basesink gstbasesink.c:2846:gboolean gst_base_sink_is_too_late(GstBaseSink *, GstMiniObject *, GstClockTime, GstClockTime, GstClockReturn, GstClockTimeDiff, gboolean):<sink>[00m warning: A lot of buffers are being dropped.
0:00:18.596658000 [331m 2418[00m  0x48ed1c0 [33;01mWARN   [00m [00m            basesink gstbasesink.c:2846:gboolean gst_base_sink_is_too_late(GstBaseSink *, GstMiniObject *, GstClockTime, GstClockTime, GstClockReturn, GstClockTimeDiff, gboolean):<sink>[00m warning: There may be a timestamping problem, or this computer is too slow.

if i add glimagesink sync=false to ios pipeline i have no warnings about buffer of timestamping problem but i get huge latency.

but in both cases i get greenish image and warning : 0:00:12.215515000 [331m 2418[00m  0x48ed1c0 [33;01mWARN   [00m [00m          video-info video-info.c:391:gboolean gst_video_info_from_caps(GstVideoInfo *, const GstCaps *):[00m invalid colorimetry, using default
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