10bit mkv videos black video

[leszek]

10bit mkv h264 videos will playback but only show a black video output in media player.
See sample file from here: ​http://ps-auxw.de/10bit-h264-sample/10bit-eldorado.mkv

The output I get is (on alpha 4):

~/Desktop> MediaPlayer 10bit-eldorado.mkv 
open playlist item: 10bit-eldorado.mkv
Compiler did not align stack variables. Libavcodec has been miscompiled
and may be very slow or crash. This is not a bug in libavcodec,
but in the compiler. You may try recompiling using gcc >= 4.2.
Do not report crashes to FFmpeg developers.
No BE API colorspace definition for pixel format "(unknown)".
CPU is capable of running MMX SSE1 SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 
resolve_colorspace: PIX_FMT_NONE => B_YCbCr422: NULL
BMediaEventLooper: SchedulingLatency is 750
BMediaEventLooper: SchedulingLatency is 3000
VideoConsumer::CreateBuffers - ERROR CREATING VIDEO RING BUFFER (Index 0 Width 608 Height 480 Colorspace 16384: Out of memory
VideoConsumer::Connected - COULDN'T CREATE BUFFERS
BMediaRoster::Connect: aborting after BBufferConsumer::Connected, status = 0x80000000
VideoProducer::Connect() - consumer error: Out of memory
BMediaRoster::Connect: aborted
Can't connect the video source to the video window... trying without overlays, error: Out of memory
NodeManager::_SetupVideoNodes() - falling back to B_RGB32
BMediaRoster::Connect connection established!
running without audio node
BMediaRoster::ReleaseNode, trying to release reference counting disabled timesource, node 1, port 282, team 8067
CPU is capable of running MMX SSE1 SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 
resolve_colorspace: PIX_FMT_NONE => B_RGB32: NULL