Hardware H264 Decoding on TK1

Technical Support
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1

Is there any special parameters or driver setup that needs to be done in order for the TK1 to use the H264 hardware decoder for video? I’ve got a gstreamer RTSP pipeline setup but the performance is not great - rather latent, even with latency=0 specified in the gstreamer args:

gst-launch-1.0 rtspsrc location=rtsp://192.168.100.5:554/0 latency=0 ! rtph264depay ! h264parse ! omxh264dec ! videoconvert ! xvimagesink

I would have expected much smoother video given the power of the GPU and the hardware decoder.

When I check the cpu usage using top while the video feed is running, the CPU usage is pretty low - maxing out at about 30% with only 1 core running.

2

Ok, so it would seem that if I try exactly the same thing using gst-launch-0.10 then the latency almost disappears entirely.

gst-launch-0.10 rtspsrc location=rtsp://192.168.0.168:554/0 latency=0 ! rtph264depay ! nv_omx_h264dec ! nv_omx_videosink
3

We are aware that there is a certain feature offset between gstreamer 0.10 and 1.0 on TK1. You may find NVIDIA’s Multimedia User Guide useful as well.

4

Thanks @marcel.tx, I’ve already picked through the MM user guide previously to get the correct plugins in order to bring the pipeline up. For now, I’ll just use gst-launch-0.10