AnsweredAssumed Answered

Full HD CSI Camera Movie frame rate does not come out.

Question asked by 近藤 勇介 on Mar 8, 2019
Latest reply on Mar 26, 2019 by Diego Adrian Cuevas
I am making fullHD camera recording using Gstreamer.
At this time, the problem that the frame rate does not come out in Full HD recording has occurred.(May be about 5fps)

I am connecting 16 bit gated mode CSI camera.
I am remodeling imx-4.9.88-2.0.0_ga for this camera and using it.

I am using gstreamer on the pipeline below.



$gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1920,height=1080,framerate=30/1 ! \

videorate ! "video/x-raw,framerate=30/2" ! \

imxvideoconvert_ipu ! video/x-raw,format=NV12,width=1920,height=1080 ! \

vpuenc_h264 bitrate=15000 ! mpegtsmux ! filesink location=output.ts


I checked the bus situation at this time using the MMDC Profiling Tool and found that the bus load was high.



MMDC new Profiling results:
Measure time: 501ms
Total cycles count: 264461184
Busy cycles count: 216280018
Read accesses count: 7991244
Write accesses count: 6424326
Read bytes count: 133236928
Write bytes count: 140699808
Avg. Read burst size: 16
Avg. Write burst size: 21
Read: 253.62 MB/s /  Write: 267.83 MB/s  Total: 521.45 MB/s
Utilization: 7%
Overall Bus Load: 81%
Bytes Access: 19


Is this load condition reasonable?