In continuing with the discussion here , as the post has been archived, here is the updated get_converted_mat function. static GstFlowReturn get_converted_mat (GstDsExample * dsexample, NvBufSurface *input_buf, gint idx, NvOSD_RectParams * crop_rect_params, gdouble & ratio, gint input_width, …

Hi, Would need your help to share a consistent way of reproducing the flickering. We have tested the patch and don’t see the issue. In your description, it seems to be certain issue in NvBufSurfaceSyncForDevice(). Need to reproduce the issue first so that we can do investigation.

Hi, We will try to reproduce it with the patch. One thing to confirm is that you have to set full-frame=1 in [ds-example], or the frame is possibly overwritten multiple times due to the for loop in gst_dsexample_transform_ip(): for (l_obj = frame_meta->obj_meta_list; l_obj != NULL; …

Hi neophyte1, We are using your code and build the gstdsexample.cpp, then run the deepstream-app, it can run successful. Attached our output “Nano-gstdsexample.jpg” for you reference. [Nano-gstdsexample]

Hi, Thanks for the quick response. Continuing with comment , can you elaborate upon it. Also, I am using EGL sink for rendering. i.e option 2.

Hi neophyte1, I also check Eglsink (type=2), result looks good. For my above picture is test with default setting, type=5. Test with “source8_1080p_dec_infer-resnet_tracker_tiled_display_fp16_nano.txt” config and add below: [ds-example] enable=1 processing-width=640 processing-height=480 fu…

Hi, I am already adding ds-example in the spec file. I would like to know, why if the frame is overwritten, there is a chance of such flickering as mentioned in the above comments. Can you elaborate upon it ?

Performing OpenCV operations on pipeline buffer

Accelerated Computing Intelligent Video Analytics DeepStream SDK

neophyte1 April 28, 2020, 9:17am 5

Even if the frame is overwritten multiple times, may I know the reason why this kind of flickering is observed. It’s understandable if the bbox themselves don’t get drawn. But sometimes, only two sides are drawn, sometimes 3 sometimes all 4. And the remaining sides have whitish colour.

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Performing OpenCV operations on pipeline buffer

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