AttributeError: module 'pyds' has no attribute 'gst_buffer_get_nvds_batch_meta'

hi

I am testing deepstream in Xavier NX. I install DS 5.0, and also copy pyds.so to lib folder, then run “python setup.py install”.

when I run “python deepstream_test_1.py pedestrians.h264”
it returns error:
“Traceback (most recent call last):
File “deepstream_test_1.py”, line 60, in osd_sink_pad_buffer_probe
batch_meta = pyds.gst_buffer_get_nvds_batch_meta(hash(gst_buffer))
AttributeError: module ‘pyds’ has no attribute ‘gst_buffer_get_nvds_batch_meta’”

Not sure why this happens, please help to advise.

Thanks,

hal

(Below are full log of output]
Creating Pipeline

Creating Source

Creating H264Parser

Creating Decoder

Creating EGLSink

Playing file /usr/share/visionworks/sources/data/pedestrians.h264
Adding elements to Pipeline

Linking elements in the Pipeline

Starting pipeline

Using winsys: x11
Opening in BLOCKING MODE
ERROR: Deserialize engine failed because file path: /opt/nvidia/deepstream/deepstream-5.0/sources/deepstream_python_apps-master/apps/deepstream-test1/…/…/…/…/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine open error
0:00:01.463956079 9282 0x30a99750 WARN nvinfer gstnvinfer.cpp:616:gst_nvinfer_logger: NvDsInferContext[UID 1]: Warning from NvDsInferContextImpl::deserializeEngineAndBackend() <nvdsinfer_context_impl.cpp:1690> [UID = 1]: deserialize engine from file :/opt/nvidia/deepstream/deepstream-5.0/sources/deepstream_python_apps-master/apps/deepstream-test1/…/…/…/…/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine failed
0:00:01.464069775 9282 0x30a99750 WARN nvinfer gstnvinfer.cpp:616:gst_nvinfer_logger: NvDsInferContext[UID 1]: Warning from NvDsInferContextImpl::generateBackendContext() <nvdsinfer_context_impl.cpp:1797> [UID = 1]: deserialize backend context from engine from file :/opt/nvidia/deepstream/deepstream-5.0/sources/deepstream_python_apps-master/apps/deepstream-test1/…/…/…/…/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine failed, try rebuild
0:00:01.464115952 9282 0x30a99750 INFO nvinfer gstnvinfer.cpp:619:gst_nvinfer_logger: NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::buildModel() <nvdsinfer_context_impl.cpp:1715> [UID = 1]: Trying to create engine from model files
INFO: [TRT]: Reading Calibration Cache for calibrator: EntropyCalibration2
INFO: [TRT]: Generated calibration scales using calibration cache. Make sure that calibration cache has latest scales.
INFO: [TRT]: To regenerate calibration cache, please delete the existing one. TensorRT will generate a new calibration cache.
INFO: [TRT]:
INFO: [TRT]: --------------- Layers running on DLA:
INFO: [TRT]:
INFO: [TRT]: --------------- Layers running on GPU:
INFO: [TRT]: conv1 + activation_1/Relu, block_1a_conv_1 + activation_2/Relu, block_1a_conv_2, block_1a_conv_shortcut + add_1 + activation_3/Relu, block_2a_conv_1 + activation_4/Relu, block_2a_conv_2, block_2a_conv_shortcut + add_2 + activation_5/Relu, block_3a_conv_1 + activation_6/Relu, block_3a_conv_2, block_3a_conv_shortcut + add_3 + activation_7/Relu, block_4a_conv_1 + activation_8/Relu, block_4a_conv_2, block_4a_conv_shortcut + add_4 + activation_9/Relu, conv2d_cov, conv2d_cov/Sigmoid, conv2d_bbox,
INFO: [TRT]: Detected 1 inputs and 2 output network tensors.
ERROR: Serialize engine failed because of file path: /opt/nvidia/deepstream/deepstream-5.0/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine opened error
0:00:15.679880716 9282 0x30a99750 WARN nvinfer gstnvinfer.cpp:616:gst_nvinfer_logger: NvDsInferContext[UID 1]: Warning from NvDsInferContextImpl::buildModel() <nvdsinfer_context_impl.cpp:1743> [UID = 1]: failed to serialize cude engine to file: /opt/nvidia/deepstream/deepstream-5.0/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine
INFO: [Implicit Engine Info]: layers num: 3
0 INPUT kFLOAT input_1 3x368x640
1 OUTPUT kFLOAT conv2d_bbox 16x23x40
2 OUTPUT kFLOAT conv2d_cov/Sigmoid 4x23x40

0:00:15.690062927 9282 0x30a99750 INFO nvinfer gstnvinfer_impl.cpp:313:notifyLoadModelStatus: [UID 1]: Load new model:dstest1_pgie_config.txt sucessfully
NvMMLiteOpen : Block : BlockType = 261
NVMEDIA: Reading vendor.tegra.display-size : status: 6
NvMMLiteBlockCreate : Block : BlockType = 261
Traceback (most recent call last):
File “deepstream_test_1.py”, line 60, in osd_sink_pad_buffer_probe
batch_meta = pyds.gst_buffer_get_nvds_batch_meta(hash(gst_buffer))
AttributeError: module ‘pyds’ has no attribute ‘gst_buffer_get_nvds_batch_meta’
… (repeat same error) …
End-of-stream

Resolved by reinstall system, and use latest JetPack to install Deepstream5.

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