• Hardware Platform : dGPU • DeepStream Version : 6.2 • Language : c++ The question can be seperated as - How to get the frame as image data? (numpy array or others) How to send that image to kafka? For no.1, I want something in c++ similar to the below python example - n_frame = pyds.get_nvd…

please refer to NvDsObjEncUsrArgs’s saveImg, which represents “Boolean variable to save image”.

please refer to How to get numpy array frame from deepstream 5 . please refer to How to save frame as jpg and send the filename to kafka in deepstream 5.0 deepstream_test5

I want the no 1 in c++. I do not want to save the image as jpg. I do not want to send the filename, instead I want to send the image to kafka.

Isn’t there any way to get the image data in any format in c++? (not saving as jpg to disk)

please refer to this DeepStream SDK FAQ - #17 by mchi , you can save the data into buffer or disk. please refer to this How to add custom data to analytics or send data via kafka inside deep stream , you can ad jpg as a extra information.

Okay, nvds_obj_enc_process (ctx, &frameData, ip_surf, NULL, frame_meta); This function save the image as jpg right? Without saving to disk how can I send the image to kafka?

NvDsObjEncUsrArgs 's attachUsrMeta can save jpg data as usermeta, please refer to sample \opt\nvidia\deepstream\deepstream-6.2\sources\apps\sample_apps\deepstream-image-meta-test\deepstream_image_meta_test.c, it can save and access jpg data in usermeta. then you can use this method add custom data …

the example deepstream_image_meta_test.c is a .c file. I followed every steps in my .cpp file and I get the following error in compilation error: invalid conversion from ‘gpointer’ {aka ‘void*’} to ‘NvDsObjEncCtxHandle’ {aka ‘_NvDsObjEncCtx*’} [-fpermissive] 1215 | nvds_obj_enc_process(ctx…

please create NvDsObjEncCtxHandle by nvds_obj_enc_create_context and pass it to probe function by gst_pad_add_probe (pgie_src_pad, GST_PAD_PROBE_TYPE_BUFFER, pgie_src_pad_buffer_probe, (gpointer) obj_ctx_handle, NULL);

yes I have done it. Followed everything but still the same. I have seen a similar topic where the error is same - Try to send custom nvdsanalytics result to kafka, but message meta copy func compile failed but the solution is not clear

In Deepstream application, how to send a frame as image to kafka?

Accelerated Computing Intelligent Video Analytics DeepStream SDK

fanzh May 11, 2023, 2:24am 6

please refer to this DeepStream SDK FAQ - #17 by mchi, you can save the data into buffer or disk.
please refer to this How to add custom data to analytics or send data via kafka inside deep stream, you can ad jpg as a extra information.

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In Deepstream application, how to send a frame as image to kafka?

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