Jetson TX2 NX Module - H264 Lossless Encoding

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi, there,
We are testing HW H264 encoder on TX2 NX module for lossless h264 encoding.
Q1: Does sample application ‘01_video_encode’ takes planar or packed pixel yuv444 file for lossless encoding?
Q2: If we need use gstreamer do lossless h264 streaming, does any gstreamer plugin support TX2 NX HW lossless h264 encoder?
“gst-inspect-1.0 omxh264enc” and “gst-inspect-1.0 nvv4l2h264enc” shows only YV12 and NV12, no YUV444 or Y444.
Thanks

3

Hi,
For lossless encoding, please refer to
H.264 lossless encoding - #2 by DaneLLL

Input format is planar 4:4:4 YUV.

4

Thanks for the reply. I see the " H.264 lossless encoding - #2 by DaneLLL" uses gst save yuv file, then use ‘video_encode’ to encode it.
Sorry my Q2 in op is also our concern, is there any gst plugin supports TX2 HW 264 encoder to do YUV444 lossless encoding?

5

Hi,
There is no implementation in gstreamer. Please consider to use jetson_multimedia_api.

6

Thanks for the reply.
If we need below pipe (lossless) on Jetson TX2 NX, is there any suggestion on how to implement ?
camera → gst pipe → h264/265 udp stream → gst rtsp server
or
camera → h264/265 udp stream → rtsp server

7

Hi,
A possible solution is to run like:

nvarguscamerasrc ! video/x-raw(memory:NVMM),format=NV12 ! nvvidconv ! video/x-raw(memory:NVMM),format=Y444 ! nvv4l2h264enc ! h264parse ! rtph264pay ! udpsink

And you would need to adding Y444 format in nvvidconv and nvv4l2h264enc plugins. The source code of the plugins is public and in the package:
https://developer.nvidia.com/embedded/l4t/r32_release_v5.1/r32_release_v5.1/sources/t186/public_sources.tbz2

You can build/replace the default code first and then do customization by referring to jetson_multimedia_api samples.

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