Jetson Xavier NX Gstreamer nvv4l2h264enc h264 AUD unit comes all-time

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
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1

I’ve used Jetson Xavier NX built in Gstreamer encoder - nvv4l2h264enc and built a pipline using it-
gst-launch-1.0 nvarguscamerasrc name=nvarguscamerasrc0 ! ‘video/x-raw(memory:NVMM), width=(int)640, height=(int)480,
format=(string)NV12, framerate=(fraction)30/1’ ! nvv4l2h264enc ! h264parse ! filesink location=normal.h264 -e

Analyzing the dump i’ve found AUD unit is coming in the h264 dump.
But with gst-inspect-1.0 nvv4l2h264enc it says
insert-aud : Insert H.264 Access Unit Delimiter(AUD)
flags: readable, writable
Boolean. Default: false
Then i’ve tried building a pipeline with insert-aud=false
gst-launch-1.0 nvarguscamerasrc name=nvarguscamerasrc0 ! ‘video/x-raw(memory:NVMM), width=(int)640, height=(int)480,
format=(string)NV12, framerate=(fraction)30/1’ ! nvv4l2h264enc insert-aud=false ! h264parse ! filesink location=audfalse.h264 -e

But still AUD unit is coming. How can i turn off the AUD unit?

4

Hi,
Thanks for reporting it. We can observe the issue on r32.4.3. Will invstigate and update.

5

Hi,
The AU delimiters are inserted by h264parse. You can try the pipeline without it:

$ gst-launch-1.0 videotestsrc num-buffers=300 ! nvvidconv ! nvv4l2h264enc ! video/x-h264,stream-format=byte-stream ! filesink location=a.h264