Sam Hurst

Hello, Thanks for getting back to me. I had done some testing with the tbf qdisc instead of just straight netem, but that didn't perform that well either. I've tried...

Hi Ingemar, The i7-1185G7 that I'm running these tests on doesn't seem to struggle with 10Mbit/s 1080p (~24% CPU usage, or 3% for all 8 threads of the host CPU)....

Just run that and here's the result, with the `-maxrate` parameter on `scream_bw_test_tx` also set to 7000:  In case it helps, here's the CSV from my screamtx run above:...

By "entire log", do you mean the whole GStreamer log? And I can probably get the actual bit rate using GstShark, I'm not sure if the x264enc element directly reports...

Here's the GStreamer log with GstShark bitrate logging as well as GST_DEBUG="*:2,scream*:9". I didn't seem to get much output from GStreamer by itself, so I turned up the element debugging....

That is possible. Before raising this ticket, I had also performed testing with vaapih264enc, but that had even worse performance (combined results with the first graph on this issue, although...

I've tried playing with the qp-step and vbv-buf-capacity parameters like you suggested, but cranking up the qp-step to 32 and the vbv-buf-capacity down to 100 milliseconds doesn't make much difference....

I tried with `-rateincrease 1000 -ratescale 0.2`, and I could count fewer peaks but still the same large drops. I've also tried dropping them to `-rateincrease 500 -ratescale 0.1` but...

Apologies for being quiet here for a while, a mixture of other projects taking time as well as some personal leave last month meaning it's been longer to get this...

Thanks to Jacob's pointer, I've modified the nvbaseenc code to allow me to set those values to FALSE, and the NVidia encoder doesn't generate a new IDR every time there's...