Good morning! I am working on Jetson AGX application for my client. The core of it consists of four cameras. Each one is being captured @30FPS using Argus, and then YUV images of the frames are fed into NvEncoder. There is shared frame pool so the interface is zero-copy. NvEncoder is configured to …

Hi DaneLLL To be honest, I always though these were documented somewhere and I just recalled, where: https://docs.nvidia.com/jetson/archives/r35.4.1/DeveloperGuide/text/SD/Multimedia/AcceleratedGstreamer.html (it is longish document, please search for SlowPreset). It breaks down Fast/Medium/Slow…

Hi, Please run the script to enable system in maximum performance mode: VPI - Vision Programming Interface: Performance Benchmark And also enable max perf mode to encoder. There are two hardware encoder engines in Xavier. Please run sudo tegrastats to make sure both are enabled in your applicatio…

Thanks for the reply! I did the following: Tried the encoding in both --max and --restore modes. Performance seems unaffected. Made sure I was calling setMaxPerfMode(1) on all encoders. Yeah, I was. When I tried doing the same with setMaxPerfMode(0) it was much slower. Did sudo tegrastats when the…

Thanks, @DaneLLL . A couple of follow-up questions: Is the VIC freq tied to NVENC freq, i.e., assigning maxfreq to vicfreqctrl will also maximize the nvenc encoder freq on the Jetson AGX Xavier? Or are there different parts in the /sys/devices tree to write to to maximize performance of the nvenc …

Thanks, @DaneLLL . I understand that the presets are different encoder tradeoffs. My questions 1-5 above were more specific than that and asked for additional detail or comment on our observations. Could you please help with answering those?

Hi, For the queries: VIC frequency is not tied to encoder. For running VIC engine at maximum frequency, please run the script: VPI - Vision Programming Interface: Performance Benchmark The capability of encoding/decoding is stated in module data sheet: Log in | NVIDIA Developer The presets …

Thanks. We still have some remaining questions, and require some more detail. For JAX there is the following line for NVENC in the datasheet: 4K60 (4) | 4K30 (8) | 1080p60 (16) | 1080p30 (32) The number in brackets is “Maximum Number of Streams”. What exactly does that “Maximum Number of Stre…

Hi, The capability in the data sheet is run under ULTRAFAST preset. if you would like to achieve the capability, please set to ULTRAFAST. In SLOW preset, certain enhancing-video-quality filters are enabled, so it takes more time to encode single frame, and has worse throughput in single and simulta…

Thanks, @DaneLLL . Is there more detailed documentation available which additional filters or functions are enabled when going from ULTRAFAST to FAST to MEDIUM and to SLOW? Or is this proprietary knowledge and not shared? Secondly, do all the additional filters for enhancing video quality in SLOW m…

Hi, The detail of hardware presets is private and we are not able to share it. And it is in NVENC only. No other hardware engines are involved.

Jetson AGX h.265 encode latency

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

DaneLLL May 7, 2024, 1:42am 6

Hi,
The presets are for different performance and quality. Certain encoding filters for enhancing video quality are disabled for better throughput in ULTRAFAST and FAST mode. You would need to select a mode to balance video quality and encoding performance.

And please also try CBR + setting virtual buffer size:
Random blockiness in the picture RTSP server-client -Jetson TX2 - #5 by DaneLLL

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Jetson AGX h.265 encode latency

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