DaneLLL
January 14, 2021, 11:37pm
3
Hi,
Hi,
It may not be shown correctly in gst-launch-1.0. You can change bitrate runtime. Please check the attachment and give it a try
$ g++ -Wall -std=c++11 test2.cpp -o test $(pkg-config --cflags --libs gstreamer-app-1.0)
nvidia@nvidia-desktop:~$ ./test
Using launch string: nvarguscamerasrc ! video/x-raw(memory:NVMM), width=1920, height=1080, framerate=30/1,format=(string)NV12 ! nvv4l2h264enc control-rate=1 name=video_enc ! video/x-h264,stream-format=byte-stream ! appsink name=mysink
Default b…
Or 01_video_encode? We would need to replicate it and check further. A possible reason is that the bitrate is too low and encoder cannot achieve the compression rate. We observe it in the topic:
Hi x1tester62,
I think you are right. 1.5mbps can be the lowest bitrate for high motion case of 1080p30. In general, the bitrate is suggested to be ~10mbps for 1080p30 to get good quality. If all frames are quantized at 50 and it still cannot go below 1.5mbps, it hits the compression limit. For getting lower bitrate, we have to drop frames.
Please try
gst-launch-1.0 nvcamerasrc num-buffers=300 ! ‘video/x-raw(memory:NVMM),width=1920,height=1080,framerate=30/1,format=I420’ ! omxh264enc bitrate…