0:00:02.617626890 1711 0x3e18c660 WARN nvinfer gstnvinfer.cpp:599:gst_nvinfer_logger:<primary_gie> NvDsInferContext[UID 1]: Warning from NvDsInferContextImpl::generateBackendContext() <nvdsinfer_context_impl.cpp:1673> [UID = 1]: deserialize backend context from engine from file :/opt/nvidia/deepstream/deepstream-5.0/sources/objectDetector_Yolo/model_b1_fp16.engine failed, try rebuild
0:00:02.617668402 1711 0x3e18c660 INFO nvinfer gstnvinfer.cpp:602:gst_nvinfer_logger:<primary_gie> NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::buildModel() <nvdsinfer_context_impl.cpp:1591> [UID = 1]: Trying to create engine from model files
ERROR: failed to build network since there is no model file matched.
can you modified the deepstream_app_config_yoloV3_tiny.txt and config_infer_primary_yoloV3_tiny.txt based on DS5.0 config files ? You can modify the config file steps by step to narrow down which change cause the issue.
Regarding the camera issue, is it the same as previous failure? If it’s not, please file a new ticket to avoid confusion.