How many videostreams can be support with decoder and encoder at the same time?

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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1

Decoder can support 32 videostreams at the same time,encoder can support 30 videostreams at the same time.How many videostreams can be support with decoder and encoder at the same time? we want test the max ability of Xavier support videostream, 1080p H.264/25fps

3

Hi,
We don’t test the case. You may give it a try under sudo nvpmodel -m 0 and sudo jetson_clocks. The limitation in this case can be in memory bandwidth, so it may not achieve the same as decoding only or encoding only.

4

We had given it under model 0.we test it can decode 32 videostreams and encode 15 videostreams at the same time,why it can’t encode 30 videostreams,1080p H264/25fps?

5

Hi,
For simultaneous encoding + decoding, the performance can be capped by memory bandwidth.

Please realize the supported cases are listed in
https://developer.nvidia.com/jetson-agx-xavier-series-datasheet
And it cannot achieve the same in simultaneous decoding + encoding.

7

xavier1
xavier11920×887 79.7 KB
xavier2
xavier21920×887 128 KB

there are two xavier, one is decode 26 videostreams ok, the other when decode 12 videostreams, the frame drop below 20 fps/s, I check the two jtop, the noworking decode device the HW engine is off, is there some way to open the NVDEC？

8

I try it again, and found when working with NVDEC, the NVDEC on auto, when didn’t use, it off auto, but on one xavier it working normal, the other is not, is there someway to setting to make it normal?

9

Hi feng.you,
Please open a new topic for your issue.
Thanks